1
|
Nguyen HK, Minato T, Teramoto T, Ogo S, Kakuta Y, Yoon KS. Disassembly and reassembly of the non-conventional thermophilic C-phycocyanin. J Biosci Bioeng 2024; 137:179-186. [PMID: 38238241 DOI: 10.1016/j.jbiosc.2023.12.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 03/03/2024]
Abstract
C-phycocyanin (CPC), which contains open-chain tetrapyrroles, is a major light-harvesting red-fluorescent protein with an important role in aquatic photosynthesis. Recently, we reported a non-conventional CPC from Thermoleptolyngbya sp. O-77 (CPCO77) that contains two different structures, i.e., a hexameric structure and a non-conventional octameric structure. However, the assembly and disassembly mechanisms of the non-conventional octameric form of CPC remain unclear. To understand this assembly mechanism, we performed an in vitro experiment to study the disassembly and reassembly behaviors of CPC using isolated CPC subunits. The dissociation of the CPCO77 subunit was performed using a Phenyl-Sepharose column in 20 mM potassium phosphate buffer (pH 6.0) containing 7.0 M urea. For the first time, crystals of isolated CPC subunits were obtained and analyzed after separation. After the removal of urea from the purified α and β subunits, we performed an in vitro reassembly experiment for CPC and analyzed the reconstructed CPC using spectrophotometric and X-ray crystal structure analyses. The crystal structure of the reassembled CPC was nearly identical to that of the original CPCO77. The findings of this study indicate that the octameric CPCO77 is a naturally occurring form in the thermophilic cyanobacterium Thermoleptolyngbya sp. O-77.
Collapse
Affiliation(s)
- Hung Khac Nguyen
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takuo Minato
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan; International Institute for Carbon-Neutral Energy Research (WPI-I(2)CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan; Department of Applied Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Takamasa Teramoto
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Seiji Ogo
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan; International Institute for Carbon-Neutral Energy Research (WPI-I(2)CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Yoshimitsu Kakuta
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan; Laboratory of Structural Biology, Graduate School of System Life Sciences, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ki-Seok Yoon
- Department of Chemistry and Biochemistry, Graduate School of Engineering, Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan; International Institute for Carbon-Neutral Energy Research (WPI-I(2)CNER), Kyushu University, 744 Moto-oka, Nishi-ku, Fukuoka 819-0395, Japan.
| |
Collapse
|
2
|
Wang J, Qin S, Lin J, Wang Q, Li W, Gao Y. Phycobiliproteins from microalgae: research progress in sustainable production and extraction processes. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:170. [PMID: 37941077 PMCID: PMC10634026 DOI: 10.1186/s13068-023-02387-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2023] [Accepted: 08/27/2023] [Indexed: 11/10/2023]
Abstract
Phycobiliproteins (PBPs), one of the functional proteins from algae, are natural pigment-protein complex containing various amino acids and phycobilins. It has various activities, such as anti-inflammatory and antioxidant properties. And are potential for applications in food, cosmetics, and biomedicine. Improving their metabolic yield is of great interest. Microalgaes are one of the important sources of PBPs, with high growth rate and have the potential for large-scale production. The key to large-scale PBPs production depends on accumulation and recovery of massive productive alga in the upstream stage and the efficiency of microalgae cells breakup and extract PBPs in the downstream stage. Therefore, we reviewed the status quo in the research and development of PBPs production, summarized the advances in each stage and the feasibility of scaled-up production, and demonstrated challenges and future directions in this field.
Collapse
Affiliation(s)
- Jinxin Wang
- College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Song Qin
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China
| | - Jian Lin
- College of Life Sciences, Yantai University, Yantai, 264005, China
| | - Qi Wang
- Shandong University of Traditional Chinese Medicine, Ji'nan, 250355, China
| | - Wenjun Li
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China.
- Shandong University of Traditional Chinese Medicine, Ji'nan, 250355, China.
| | - Yonglin Gao
- College of Life Sciences, Yantai University, Yantai, 264005, China.
| |
Collapse
|
3
|
Su M, Fang J, Jia Z, Su Y, Zhu Y, Wu B, Little JC, Yu J, Yang M. Biosynthesis of 2-methylisoborneol is regulated by chromatic acclimation of Pseudanabaena. ENVIRONMENTAL RESEARCH 2023; 221:115260. [PMID: 36649844 DOI: 10.1016/j.envres.2023.115260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/27/2022] [Accepted: 01/09/2023] [Indexed: 06/17/2023]
Abstract
Cyanobacteria can sense different light color by adjusting the components of photosynthetic pigments including chlorophyll a (Chl a), phycoerythrin (PE), and phycocyanin (PC), etc. Filamentous cyanobacteria are the main producer of 2-methylisoborneol (MIB) and many can increase their PE levels so that they are more competitive in subsurface layer where green light is more abundant, and have caused extensive odor problems in drinking water reservoirs. Here, we identified the potential correlation between MIB biosynthesis and ambient light color induced chromatic acclimation (CA) of a MIB-producing Pseudanabaena strain. The results suggest Pseudanabaena regulates the pigment proportion through Type III CA (CA3), by increasing PE abundance and decreasing PC in green light. The biosynthesis of MIB and Chl a share the common precursor, and are positively correlated with statistical significance regardless of light color (R2=0.68; p<0.001). Besides, the PE abundance is also positively correlated with Chl a in green light (R2=0.57; p=0.019) since PE is the antenna that can only transfer the energy to PC and Chl a. In addition, significantly higher MIB production was observed in green light since more Chl a was synthesized.
Collapse
Affiliation(s)
- Ming Su
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing, 100085, China; National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Jiao Fang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing, 100085, China; School of Civil Engineering, Chang'an University, Xi'an, 710054, China
| | - Zeyu Jia
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing, 100085, China; Yangtze Eco-Environment Engineering Research Center, China Three Gorges Corporation, Beijing, 100038, China.
| | - Yuliang Su
- Zhuhai Water Environment Holdings Group Ltd., Zhuhai, 519020, China
| | - Yiping Zhu
- Shanghai Chengtou Raw Water Co. Ltd., Beiai Rd. 1540, Shanghai, 200125, China
| | - Bin Wu
- Zhuhai Water Environment Holdings Group Ltd., Zhuhai, 519020, China
| | - John C Little
- Department of Civil and Environmental Engineering, Virginia Tech., Blacksburg, VA, 24061-0246, USA
| | - Jianwei Yu
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing, 100085, China; National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Min Yang
- Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing, 100085, China; National Engineering Research Center of Industrial Wastewater Detoxication and Resource Recovery, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| |
Collapse
|
4
|
Hooda N, Gupta R, Gupta NR. Prediction of Malignant Breast Cancer Cases Using Ensemble Machine Learning: A Case Study of Pesticides Prone Area. IEEE/ACM TRANSACTIONS ON COMPUTATIONAL BIOLOGY AND BIOINFORMATICS 2022; 19:1096-1104. [PMID: 33090952 DOI: 10.1109/tcbb.2020.3033214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cancer of the female breast is one of the leading types of cancers worldwide. This paper presents a case study of Malwa Belt in India that has witnessed the proliferation in the overall mortality rate due to breast cancer. The paper researches mortality aspect of the disease and its association with the various risk parameters including demographic characteristics, percentage of pesticides residue present in the water and soil, life style of the women in the affected area, water intake, and the amount of pesticide exposure to the patient. The levels of organochlorine pesticides like DDT and its metabolites and isomers of HCH in blood, tumor and surrounding adipose are estimated. Additionally, an extent of exposure of the subjects to environmental pollutants like heavy metals (Lead, Copper, Iron, Zinc, Calcium, Selenium, and Chromium etc.)are also examined. For the obtained experimental data, an efficient ensemble machine learning based framework called Bagoost is proposed to predict the risk of breast cancer in Malwa women. The performance of the proposed machine learning model results in an accuracy of 98.21 percent, when empirically tested using K-fold cross validation over the real time data of malignant and benign cases and is established to be efficacious than the existing approaches.
Collapse
|
5
|
Yang D, He H, Xu B. Enzyme-instructed morphological transition of the supramolecular assemblies of branched peptides. Beilstein J Org Chem 2020; 16:2709-2718. [PMID: 33214796 PMCID: PMC7653338 DOI: 10.3762/bjoc.16.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Accepted: 10/16/2020] [Indexed: 11/26/2022] Open
Abstract
Here, we report the use of an enzymatic reaction to cleave the branch off branched peptides for inducing the morphological transition of the assemblies of the peptides. The attachment of DEDDDLLI sequences to the ε-amine of the lysine residue of a tetrapeptide produces branched peptides that form micelles. Upon the proteolytic cleavage of the branch, catalyzed by proteinase K, the micelles turn into nanofibers. We also found that the acetylation of the N-terminal of the branch increased the stability of the branched peptides. Moreover, these branched peptides facilitate the delivery of the proteins into cells. This work contributes insights for the development of peptide supramolecular assemblies via enzymatic noncovalent synthesis in cellular environment.
Collapse
Affiliation(s)
- Dongsik Yang
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA
| | - Hongjian He
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South Street, Waltham, MA 02454, USA
| |
Collapse
|
6
|
Nair D, Krishna JG, Panikkar MVN, Nair BG, Pai JG, Nair SS. Identification, purification, biochemical and mass spectrometric characterization of novel phycobiliproteins from a marine red alga, Centroceras clavulatum. Int J Biol Macromol 2018; 114:679-691. [DOI: 10.1016/j.ijbiomac.2018.03.153] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Revised: 03/22/2018] [Accepted: 03/25/2018] [Indexed: 11/30/2022]
|
7
|
He H, Wang J, Wang H, Zhou N, Yang D, Green DR, Xu B. Enzymatic Cleavage of Branched Peptides for Targeting Mitochondria. J Am Chem Soc 2018; 140:1215-1218. [PMID: 29328651 PMCID: PMC5842676 DOI: 10.1021/jacs.7b11582] [Citation(s) in RCA: 123] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Most of the reported mitochondria-targeting molecules are lipophilic and cationic, and thus they may become cytotoxic with accumulation. Here we show enzymatic cleavage of branched peptides that carry negative charges for targeting mitochondria. Conjugating a well-established protein tag (i.e., FLAG-tag) to self-assembling motifs affords the precursors that form micelles. Enzymatic cleavage of the hydrophilic FLAG motif (DDDDK) by enterokinase (ENTK) turns the micelles to nanofibers. After being taken up by cells, the micelles, upon the action of intracellular ENTK, turn into nanofibers to locate mainly at mitochondria. The micelles of the precursors are able to deliver cargos (either small molecules or proteins) into cells, largely to mitochondria and within 2 h. Preventing ENTK proteolysis diminishes mitochondria targeting. As the first report of using enzymatic self-assembly for targeting mitochondria and delivery cargos to mitochondria, this work illustrates a fundamentally new way to target subcellular organelles for biomedicine.
Collapse
Affiliation(s)
- Hongjian He
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Jiaqing Wang
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Huaimin Wang
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Ning Zhou
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Dongsik Yang
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| | - Douglas R. Green
- Department of Immunology, St. Jude Children’s Research Hospital, Memphis, TN 38105, USA
| | - Bing Xu
- Department of Chemistry, Brandeis University, 415 South St., Waltham, MA 02454, USA
| |
Collapse
|
8
|
Direct single-molecule measurements of phycocyanobilin photophysics in monomeric C-phycocyanin. Proc Natl Acad Sci U S A 2017; 114:9779-9784. [PMID: 28847963 DOI: 10.1073/pnas.1705435114] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Phycobilisomes are highly organized pigment-protein antenna complexes found in the photosynthetic apparatus of cyanobacteria and rhodophyta that harvest solar energy and transport it to the reaction center. A detailed bottom-up model of pigment organization and energy transfer in phycobilisomes is essential to understanding photosynthesis in these organisms and informing rational design of artificial light-harvesting systems. In particular, heterogeneous photophysical behaviors of these proteins, which cannot be predicted de novo, may play an essential role in rapid light adaptation and photoprotection. Furthermore, the delicate architecture of these pigment-protein scaffolds sensitizes them to external perturbations, for example, surface attachment, which can be avoided by study in free solution or in vivo. Here, we present single-molecule characterization of C-phycocyanin (C-PC), a three-pigment biliprotein that self-assembles to form the midantenna rods of cyanobacterial phycobilisomes. Using the Anti-Brownian Electrokinetic (ABEL) trap to counteract Brownian motion of single particles in real time, we directly monitor the changing photophysical states of individual C-PC monomers from Spirulina platensis in free solution by simultaneous readout of their brightness, fluorescence anisotropy, fluorescence lifetime, and emission spectra. These include single-chromophore emission states for each of the three covalently bound phycocyanobilins, providing direct measurements of the spectra and photophysics of these chemically identical molecules in their native protein environment. We further show that a simple Förster resonant energy transfer (FRET) network model accurately predicts the observed photophysical states of C-PC and suggests highly variable quenching behavior of one of the chromophores, which should inform future studies of higher-order complexes.
Collapse
|
9
|
|
10
|
Marx A, David L, Adir N. Piecing Together the Phycobilisome. THE STRUCTURAL BASIS OF BIOLOGICAL ENERGY GENERATION 2014. [DOI: 10.1007/978-94-017-8742-0_4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
11
|
Tashyreva D, Elster J, Billi D. A novel staining protocol for multiparameter assessment of cell heterogeneity in Phormidium populations (cyanobacteria) employing fluorescent dyes. PLoS One 2013; 8:e55283. [PMID: 23437052 PMCID: PMC3577823 DOI: 10.1371/journal.pone.0055283] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Accepted: 12/21/2012] [Indexed: 12/04/2022] Open
Abstract
Bacterial populations display high heterogeneity in viability and physiological activity at the single-cell level, especially under stressful conditions. We demonstrate a novel staining protocol for multiparameter assessment of individual cells in physiologically heterogeneous populations of cyanobacteria. The protocol employs fluorescent probes, i.e., redox dye 5-cyano-2,3-ditolyl tetrazolium chloride, ‘dead cell’ nucleic acid stain SYTOX Green, and DNA-specific fluorochrome 4′,6-diamidino-2-phenylindole, combined with microscopy image analysis. Our method allows simultaneous estimates of cellular respiration activity, membrane and nucleoid integrity, and allows the detection of photosynthetic pigments fluorescence along with morphological observations. The staining protocol has been adjusted for, both, laboratory and natural populations of the genus Phormidium (Oscillatoriales), and tested on 4 field-collected samples and 12 laboratory strains of cyanobacteria. Based on the mentioned cellular functions we suggest classification of cells in cyanobacterial populations into four categories: (i) active and intact; (ii) injured but active; (iii) metabolically inactive but intact; (iv) inactive and injured, or dead.
Collapse
Affiliation(s)
- Daria Tashyreva
- Department of Botany, Faculty of Science, University of South Bohemia, České Budějovice, Czech Republic.
| | | | | |
Collapse
|
12
|
Ren Y, Chi B, Melhem O, Wei K, Feng L, Li Y, Han X, Li D, Zhang Y, Wan J, Xu X, Yang M. Understanding the electronic energy transfer pathways in the trimeric and hexameric aggregation state of cyanobacteria phycocyanin within the framework of Förster theory. J Comput Chem 2013; 34:1005-12. [DOI: 10.1002/jcc.23221] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 12/05/2012] [Accepted: 12/11/2012] [Indexed: 11/11/2022]
|
13
|
Identification of singlet oxygen photosensitizes in lambs drinking water in an alveld risk area in West Norway. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2012; 119:37-45. [PMID: 23313826 DOI: 10.1016/j.jphotobiol.2012.12.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2012] [Revised: 11/26/2012] [Accepted: 12/10/2012] [Indexed: 11/22/2022]
Abstract
Alveld is a hepatogenous photosensitivity disorder in lambs. Although alveld has been known in Norway for more than 100years, there are still questions related to the cause of the disease. Phytoporphyrin has long been incriminated as the photosensitizer in hepatogenous photosensitivity diseases but previous findings suggest that the photosensitizing mechanism in alveld is more complex, possibly involving other co-factors. The current work investigates the presence of non-hepatogenous photosensitizers originating in lamb's drinking water from various sources. In addition samples of two of the predominent cyanobacteria found in a representative biofilm (i.e. aggregates of microbes) were identified and isolated in axenic (i.e. pure) cultures. Information from the absorption-, fluorescence emission-, and -excitation spectra and the action spectrum for the formation of singlet oxygen was combined in order to identify the chromophores responsible for the formation of singlet oxygen, e.g. phycocyanins from the cyanobacteria. The highest level of singlet oxygen formation was detected in lotic (i.e. flowing) water in the period consistent with the outbreak of the alveld disease in the area. Meteorological data indicate a warm and wet May with a high radiation exposure leading up to a colder and wet June with an even higher solar irradiance. The seasonal variation in the amount of photosensitizers in lamb's drinking water combined meteorological data can be important to predict the outbreak of alveld.
Collapse
|
14
|
Hötzer B, Medintz IL, Hildebrandt N. Fluorescence in nanobiotechnology: sophisticated fluorophores for novel applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2012; 8:2297-326. [PMID: 22678833 DOI: 10.1002/smll.201200109] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 02/22/2012] [Indexed: 05/26/2023]
Abstract
Nanobiotechnology is one of the fastest growing and broadest-ranged interdisciplinary subfields of the nanosciences. Countless hybrid bio-inorganic composites are currently being pursued for various uses, including sensors for medical and diagnostic applications, light- and energy-harvesting devices, along with multifunctional architectures for electronics and advanced drug-delivery. Although many disparate biological and nanoscale materials will ultimately be utilized as the functional building blocks to create these devices, a common element found among a large proportion is that they exert or interact with light. Clearly continuing development will rely heavily on incorporating many different types of fluorophores into these composite materials. This review covers the growing utility of different classes of fluorophores in nanobiotechnology, from both a photophysical and a chemical perspective. For each major structural or functional class of fluorescent probe, several representative applications are provided, and the necessary technological background for acquiring the desired nano-bioanalytical information are presented.
Collapse
Affiliation(s)
- Benjamin Hötzer
- NanoBioPhotonics, Institut d'Electronique Fondamentale, Université Paris-Sud, 91405 Orsay Cedex, France
| | | | | |
Collapse
|
15
|
Marin A, Doust AB, Scholes GD, Wilk KE, Curmi PMG, van Stokkum IHM, van Grondelle R. Flow of excitation energy in the cryptophyte light-harvesting antenna phycocyanin 645. Biophys J 2011; 101:1004-13. [PMID: 21843493 DOI: 10.1016/j.bpj.2011.07.012] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 07/12/2011] [Accepted: 07/14/2011] [Indexed: 10/17/2022] Open
Abstract
We report a detailed description of the energy migration dynamics in the phycocyanin 645 (PC645) antenna complex from the photosynthetic alga Chroomonas CCMP270. Many of the cryptophyceae are known to populate greater depths than most other algal families, having developed a 99.5% efficient light-harvesting system. In this study, we used femtosecond time-resolved spectroscopy and global analysis to characterize the excited-state dynamics of PC645. Several different pump colors were selected to excite different fractions of the four phycobiliprotein pairs present in the complex. Measurements were also performed at cryogenic temperature to enhance spectral resolution and selectively promote downhill energy transfers. Upon excitation of the highest-energy bilins (dihydrobiliverdins), energy is transferred from the core of the complex to the periphery within 0.82 ps. Four bilins (mesobiliverdin (MBV) A/B and phycocyanobilins (PCB) 158C/D), which are responsible for the central band of the absorption spectrum, show concerted spectral dynamics. These chromophores show a biphasic decay with lifetimes of 0.6 ps (MBV) and 5-7 ps (PCB 158) to the lowest bilin pair (PCB 82C/D) absorbing around 650-657 nm. Within this lifetime of several picoseconds, the excitations reach the PCB 82 bilins on the two poles at the smaller sides of PC645. A slow 44-46 ps energy transfer step to the lowest-energy PCB 82 bilin concludes the dynamics.
Collapse
Affiliation(s)
- Alessandro Marin
- Faculty of Sciences, Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
| | | | | | | | | | | | | |
Collapse
|
16
|
Glazer AN, Yeh SW, Webb SP, Clark JH. Disk-to-Disk Transfer as the Rate-Limiting Step for Energy Flow in Phycobilisomes. Science 2010; 227:419-23. [PMID: 17815728 DOI: 10.1126/science.227.4685.419] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
A broadly tunable picosecond laser source and an ultrafast streak camera were used to measure temporally and spectrally resolved emission from intact phycobilisomes and from individual phycobiliproteins as a function of excitation wavelength. Both wild-type and mutant phycobilisomes of the unicellular cyanobacterium Synechocystis 6701 were examined, as well as two biliproteins, R-phycoerythrin (240 kilodaltons, 34 bilins) and allophycocyanin (100 kilodaltons, 6 bilins). Measurements of intact phycobilisomes with known structural differences showed that the addition of an average of 1.6 phycoerythrin disks in the phycobilisome rod increased the overall energy transfer time by 30 +/- 5 picoseconds. In the isolated phycobiliproteins the onset of emission was as prompt as that of a solution of rhodamine B laser dye and was independent of excitation wavelength. This imposes an upper limit of 8 picoseconds (instrument-limited) on the transfer time from "sensitizing" to "fluorescing" chromophores in these biliproteins. These results indicate that disk-to-disk transfer is the slowest energy transfer process in phycobilisomes and, in combination with previous structural analyses, show that with respect to energy transfer the lattice of approximately 625 light-harvesting chromophores in the Synechocystis 6701 wild-type phycobilisome functions as a linear five-point array.
Collapse
|
17
|
Glazer AN, Apell GS, Hixson CS, Bryant DA, Rimon S, Brown DM. Biliproteins of cyanobacteria and Rhodophyta: Homologous family of photosynthetic accessory pigments. Proc Natl Acad Sci U S A 2010; 73:428-31. [PMID: 16578740 PMCID: PMC335922 DOI: 10.1073/pnas.73.2.428] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Amino-terminal sequence determinations are reported of the subunits of biliproteins of prokaryotic unicellular and filamentous cyanobacteria and of eukaryotic unicellular red algae. The biliproteins examined, allophycocyanin, C-phycocyanin, R-phycocyanin, b-phycoerythrin, and phycoerythrocyanin, vary with respect to the chemical nature and the number and distribution of the bilin chromophores between the two dissimilar subunits. The amino-terminal sequences fall into two classes, "alpha-type" and "beta-type", with a high degree of homology within each class.In those biliproteins where the number of bilin chromophores on the two subunits is unequal, the subunit with the greater number of chromophores has the beta-type amino-acid sequence.Extensive homology also exists between alpha- and beta-type sequences, strongly supporting the view that these arose by gene duplication to give rise to the ancestral alpha- and beta-type genes early in the evolution of the biliproteins. The subsequent generation of the various classes of biliproteins appears to be the result of further gene duplication of the alpha- and beta-type genes, ultimately to give rise to families of polypeptide chains of similar sequence, but varying in the number of chromophore attachment sites and the structure of the chromophores.
Collapse
Affiliation(s)
- A N Glazer
- Department of Biological Chemistry, UCLA School of Medicine, and the Molecular Biology Institute, University of California, Los Angeles, Calif. 90024
| | | | | | | | | | | |
Collapse
|
18
|
Seibert M, Connolly JS. FLUORESCENCE PROPERTIES OF C-PHYCOCYANIN ISOLATED FROM A THERMOPHILIC CYANOBACTERIUM. Photochem Photobiol 2008. [DOI: 10.1111/j.1751-1097.1984.tb04585.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
19
|
Ren Y, Wan J, Xu X, Zhang Q, Yang G. A Time-Dependent Density Functional Theory Investigation of the Spectroscopic Properties of the β-Subunit in C-Phycocyanin. J Phys Chem B 2006; 110:18665-9. [PMID: 16970497 DOI: 10.1021/jp064734v] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
By using time-dependent density functional theory combined with the polarizable continuum model, a satisfactory assignment of the absorption and circular dichroism spectra and energy transfer flow of the beta-subunit in C-phycocyanin (C-PC) was achieved when the protonation of beta-84 and beta-155 phycocyanobilin (PCB) and their interaction with the protein moiety in C-PC have been taken into account. We attribute the main peak for both beta-84 and beta-155 as arising from the pi electron excitation of the pyrrole rings and the shoulder peak as arising from the charge transfer from the asparate residue to PCBH(+). The satisfactory agreement between theory and experiment suggests that Förster resonance theory prevails such that energy transfer occurs from beta(s) (beta-155) to beta(f) (beta-84).
Collapse
Affiliation(s)
- Yanliang Ren
- Key Laboratory of Pesticide & Chemical Biology (CCNU), Ministry of Education, Department of Chemistry, Central China Normal University, Wuhan 430079, China
| | | | | | | | | |
Collapse
|
20
|
Adir N, Dines M, Klartag M, McGregor A, Melamed-Frank M. Assembly and Disassembly of Phycobilisomes. MICROBIOLOGY MONOGRAPHS 2006. [DOI: 10.1007/7171_020] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
|
21
|
Petsev DN, Lopez GP, Ivory CF, Sibbett SS. Microchannel protein separation by electric field gradient focusing. LAB ON A CHIP 2005; 5:587-97. [PMID: 15915250 DOI: 10.1039/b501538c] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
A microchannel device is presented which separates and focuses charged proteins based on electric field gradient focusing. Separation is achieved by setting a constant electroosmotic flow velocity against step changes in electrophoretic velocity. Where these two velocities are balanced for a given analyte, the analyte focuses at that point because it is driven to it from all points within the channel. We demonstrate the separation and focusing of a binary mixture of bovine serum albumin and phycoerythrin. The device is constructed of intersecting microchannels in poly(dimethylsiloxane)(PDMS) inlaid with hollow dialysis fibers. The device uses no exotic chemicals such as antibodies or synthetic ampholytes, but operates instead by purely physical means involving the independent manipulation of electrophoretic and electroosmotic velocities. One important difference between this apparatus and most other devices designed for field-gradient focusing is the injection of current at discrete intersections in the channel rather than continuously along the length of a membrane-bound separation channel.
Collapse
Affiliation(s)
- Dimiter N Petsev
- Department of Chemical and Nuclear Engineering, University of New Mexico, Albuquerque 87131, USA
| | | | | | | |
Collapse
|
22
|
Wan J, Xu X, Ren Y, Yang G. A Time Dependent Density Functional Theory Study of α-84 Phycocyanobilin Chromophore in C-Phycocyanin. J Phys Chem B 2005; 109:11088-90. [PMID: 16852351 DOI: 10.1021/jp0515380] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The optical characteristics of absorption and circular dichroism (CD) spectroscopy of an alpha-subunit of C-phycocyanin (C-PC) were investigated by using time dependent density functional theory (TDDFT) combined with the polarizable continuum model (PCM). When the protonation of alpha-84 phycocyanobilin (PCB) and its interaction with the protein moiety in C-PC have been taken into account, satisfactory assignment of the absorption and CD spectra of alpha-84 PCB can be achieved. The TDDFT-PCM calculations conclude that in the visible absorption region the main peak arises from the pi electron excitation of the pyrrole rings and the shoulder peak comes from the charge transfer from Asp87 (a nearby amino acid residue) to PCBH(+).
Collapse
Affiliation(s)
- Jian Wan
- Key Laboratory of Pesticide and Chemical Biology (CCNU), Ministry of Education and Department of Chemistry, Central China Normal University, Wuhan 430079, China.
| | | | | | | |
Collapse
|
23
|
Tandeau de Marsac N. Phycobiliproteins and phycobilisomes: the early observations. PHOTOSYNTHESIS RESEARCH 2003; 76:193-205. [PMID: 16228578 DOI: 10.1023/a:1024954911473] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The purpose of this minireview is to highlight the early observations that led to the discovery of the physico-chemical properties of the phycobiliproteins, their structure and function, and to their architectural organization in supramolecular complexes, the phycobilisomes. Generally attached on the stromal surface of the thylakoid membranes in both prokaryotic (cyanobacteria) and eukaryotic cells (cyanelles, red algae and cryptomonads), these complexes represent the most abundant soluble proteins and the major light-harvesting antennae for photosynthesis. This review mainly focuses on the years prior to the development of the molecular biology of cyanobacteria that flourished in the 1980s. We refer the reader to the comprehensive and excellent review by Sidler (1994) for more recent discoveries and more detailed literature on this topic. [-6pt]'It would be difficult to find another series of colouring matters of greater beauty or with such remarkable and instructive chemical and physical peculiarities.' -H. Sorby, 1877.
Collapse
Affiliation(s)
- Nicole Tandeau de Marsac
- Département de Microbiologie Fondamentale et Médicale, Unité des Cyanobactéries, URA CNRS 2172, Institut Pasteur, 28 rue du Docteur Roux, 75724, Paris Cedex 15, France,
| |
Collapse
|
24
|
Topchishvili LS, Barbakadze SI, Khizanishvili AI, Majagaladze GV, Monaselidze JR. Microcalorimetric study of iodized and noniodized cells and C-phycocyanin of Spirulina platensis. Biomacromolecules 2002; 3:415-20. [PMID: 12005509 DOI: 10.1021/bm0155928] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
It was shown that eight stages of transition are observed in the heating process of Spirulina platensis cells in temperature range 5-140 degrees C. The first stage covers the temperature range 5-53 degrees C with maximum approximately 45 degrees C. The heat evolved in this temperature range is equal to 380 +/- 20 J/g of dry biomass, it does not change at scanning rate lower than 0.083 degrees C/min and belongs, mainly, to cell respiration in a stationary regime, in the dark. It was shown that endotherm approximately 66 degrees C belongs to denaturation of C-phycocyanin which denaturates in solutions with Td = 64.2 degrees C, deltaHd = 34.7 +/- 2.1 J/g and for it deltaHd(cal)/deltaH(V.H) is equal to 10.8 +/- 1.2. The endotherms with Td equal to 58 and 88 degrees C are connected with denaturation of phycobilisome proteins and endotherm with Td = 48 degrees C and deltaHd = 4.2J/g of dry biomass-with denaturation of protein which, apparently, is connected with cell respiration.
Collapse
Affiliation(s)
- Levan S Topchishvili
- Institute of Physics of the Georgian Academy of Sciences, Tbilisi 380077, Georgia
| | | | | | | | | |
Collapse
|
25
|
Orta-Ramirez A, Merrill JE, Smith DM. Sucrose, sodium dodecyl sulfate, urea, and 2-mercaptoethanol affect the thermal inactivation of R-phycoerythrin. J Food Prot 2001; 64:1806-11. [PMID: 11726163 DOI: 10.4315/0362-028x-64.11.1806] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Thermal inactivation kinetics (D- and z-values) of the algal protein, R-phycoerythrin (R-PE), were studied under different buffer conditions (pH 4.0, 7.0, and 10.0) and concentrations of sucrose, sodium dodecyl sulfate (SDS), urea, and 2-mercaptoethanol (ME). R-PE solutions were heated in capillary tubes at temperatures between 40 and 90 degrees C depending on buffer conditions. Thermal inactivation parameters for R-PE, calculated on the basis of fluorescence loss, were modified by addition of chemicals. Overall, sucrose and ME had a thermostabilizing effect, while SDS and urea decreased thermal stability of R-PE. The z-values ranged from 5.9 degrees C in 50 mM NaCl, 20 mM glycine buffer, pH 10.0, to 37.8 degrees C in 60% sucrose, 50 mM NaCl, 20 mM phosphate buffer, pH 7.0. The z-values obtained for R-PE closely matched the z-values of some target microorganisms in food processes, suggesting R-PE might be used as a time-temperature integrator to verify thermal processing adequacy.
Collapse
Affiliation(s)
- A Orta-Ramirez
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing 48824-1224, USA
| | | | | |
Collapse
|
26
|
Orta-Ramirez A, Merrill J, Smith D. pH Affects the Thermal Inactivation Parameters of R-Phycoerythrin from Porphyra yezoensis. J Food Sci 2000. [DOI: 10.1111/j.1365-2621.2000.tb09415.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
27
|
MacColl R, Eisele LE, Marrone J. Fluorescence polarization studies on four biliproteins and a bilin model for phycoerythrin 545. BIOCHIMICA ET BIOPHYSICA ACTA 1999; 1412:230-9. [PMID: 10482785 DOI: 10.1016/s0005-2728(99)00063-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Fluorescence (excitation) polarization spectroscopy in the wavelength region of the bilin chromophores was applied to phycoerythrocyanin (CV-phycocyanin), phycocyanins 645 and 612, and phycoerythrin 545. The cryptomonad biliproteins - phycoerythrin 545 and phycocyanins 612 and 645 - were studied as both protein dimers having an alpha(2)beta(2) polypeptide structure and as alphabeta monomers. The cyanobacterial phycoerythrocyanin (CV-phycocyanin) was a trimeric oligomer. The changes in polarization across the spectrum were attributed to transfers of energy between bilins. Cryptomonad biliproteins are isolated as dimers. The similarities between their steady-state fluorescence polarization spectra and those of the corresponding monomers suggested that the monomers' conformations were analogous to the dimers. This supports the use of monomers in the study of dimer bilin organization. The unusual polarization spectrum of phycoerythrin 545 was explained using a model for the topography of its bilins. Obtaining the emission spectra of phycoerythrin 545 at several temperatures and a deconvolution of the dimer circular dichroism spectrum also successfully tested the bilin model. Circular dichroism spectroscopy was used to determine which polarization changes are formed by Förster resonance energy transfers and which may be produced by internal conversions between high- and low-energy states of pairs of exciton-coupled bilins. Attempts were made to assign energy transfer events to the corresponding changes in fluorescence polarization for each of the four biliproteins.
Collapse
Affiliation(s)
- R MacColl
- Wadsworth Center, New York State Department of Health, P.O. Box 509, Albany, NY, USA.
| | | | | |
Collapse
|
28
|
Stec B, Troxler RF, Teeter MM. Crystal structure of C-phycocyanin from Cyanidium caldarium provides a new perspective on phycobilisome assembly. Biophys J 1999; 76:2912-21. [PMID: 10354419 PMCID: PMC1300263 DOI: 10.1016/s0006-3495(99)77446-1] [Citation(s) in RCA: 72] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
The crystal structure of the light-harvesting protein phycocyanin from the cyanobacterium Cyanidium caldarium with novel crystal packing has been solved at 1.65-A resolution. The structure has been refined to an R value of 18.3% with excellent backbone and side-chain stereochemical parameters. In crystals of phycocyanin used in this study, the hexamers are offset rather than aligned as in other phycocyanins that have been crystallized to date. Analysis of this crystal's unique packing leads to a proposal for phycobilisome assembly in vivo and for a more prominent role for chromophore beta-155. This new role assigned to chromophore beta-155 in phycocyanin sheds light on the numerical relationships among and function of external chromophores found in phycoerythrins and phycoerythrocyanins.
Collapse
Affiliation(s)
- B Stec
- Department of Chemistry, Merkert Chemistry Building, Boston College, Chestnut Hill, Massachusetts 02167, USA.
| | | | | |
Collapse
|
29
|
Abstract
Cyanobacterial phycobilisomes harvest light and cause energy migration usually toward photosystem II reaction centers. Energy transfer from phycobilisomes directly to photosystem I may occur under certain light conditions. The phycobilisomes are highly organized complexes of various biliproteins and linker polypeptides. Phycobilisomes are composed of rods and a core. The biliproteins have their bilins (chromophores) arranged to produce rapid and directional energy migration through the phycobilisomes and to chlorophyll a in the thylakoid membrane. The modulation of the energy levels of the four chemically different bilins by a variety of influences produces more efficient light harvesting and energy migration. Acclimation of cyanobacterial phycobilisomes to growth light by complementary chromatic adaptation is a complex process that changes the ratio of phycocyanin to phycoerythrin in rods of certain phycobilisomes to improve light harvesting in changing habitats. The linkers govern the assembly of the biliproteins into phycobilisomes, and, even if colorless, in certain cases they have been shown to improve the energy migration process. The Lcm polypeptide has several functions, including the linker function of determining the organization of the phycobilisome cores. Details of how linkers perform their tasks are still topics of interest. The transfer of excitation energy from bilin to bilin is considered, particularly for monomers and trimers of C-phycocyanin, phycoerythrocyanin, and allophycocyanin. Phycobilisomes are one of the ways cyanobacteria thrive in varying and sometimes extreme habitats. Various biliprotein properties perhaps not related to photosynthesis are considered: the photoreversibility of phycoviolobilin, biophysical studies, and biliproteins in evolution. Copyright 1998 Academic Press.
Collapse
Affiliation(s)
- R MacColl
- Wadsworth Center, New York State Department of Health, Albany, New York, 12201-0509, USA
| |
Collapse
|
30
|
Moulin C, Petit A, Baccou J. Selective laser photolysis of organic molecules in complex matrices. J Photochem Photobiol A Chem 1995. [DOI: 10.1016/1010-6030(94)03897-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
31
|
Time-resolved polarized absorption of C-phycocyanin from the cyanobacterium Westiellopsis prolifica. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 1993. [DOI: 10.1016/1011-1344(93)87104-u] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
32
|
Abstract
Green light (510-565 nm) constitutes a significant portion of the visible spectrum impinging on biological systems. It plays many different roles in the biochemistry, physiology and structure of plants and animals. In only a relatively small number of responses to green light is the photoreceptor known with certainty or even provisionally and in even fewer systems has the chain of events leading from perception to response been examined experimentally. This review provides a detailed view of those biological systems shown to respond to green light, an evaluation of possible photoreceptors and a review of the known and postulated mechanisms leading to the responses.
Collapse
Affiliation(s)
- R M Klein
- Botany Department, University of Vermont, Burlington 05405
| |
Collapse
|
33
|
Fluorescence studies on R-phycoerythrin and C-phycoerythrin. J Fluoresc 1991; 1:135-40. [DOI: 10.1007/bf00865209] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/1991] [Revised: 04/30/1991] [Accepted: 05/16/1991] [Indexed: 10/26/2022]
|
34
|
Park JW, Sauer K. Subunit selective bleaching of C-phycocyanin from Synechococcus PCC 6301 strain AN 112 by Cu2+ and sodium perchlorate. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1991. [DOI: 10.1016/s0005-2728(05)80285-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
35
|
Fischer R, Gottstein J, Scheer H, Geiselhart P, Schneider S. Picosecond time-resolved fluorescence of phycobiliproteins: Subunits of phycocyanin from Mastigocladus laminosus. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 1990. [DOI: 10.1016/1011-1344(90)80003-g] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
36
|
Huber R. E. Antonini Plenary lecture. A structural basis of light energy and electron transfer in biology. EUROPEAN JOURNAL OF BIOCHEMISTRY 1990; 187:283-305. [PMID: 2404762 DOI: 10.1111/j.1432-1033.1990.tb15305.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Aspects of intramolecular light energy and electron transfer will be discussed for three protein cofactor complexes, whose three-dimensional structures have been elucidated by X-ray crystallography: components of light-harvesting cyanobacterial phycobilisomes, the purple bacterial reaction centre and the blue multi-copper oxidases. A wealth of functional data is available for these systems which allow specific correlations between structure and function, and general conclusions about light energy and electron transfer in biological materials to be made.
Collapse
Affiliation(s)
- R Huber
- Max-Planck-Institut für Biochemie, Martinsried, Federal Republic of Germany
| |
Collapse
|
37
|
Huber R. Nobel lecture. A structural basis of light energy and electron transfer in biology. Biosci Rep 1989; 9:635-73. [PMID: 2692721 DOI: 10.1007/bf01114805] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Aspects of intramolecular light energy and electron transfer will be discussed for three protein cofactor complexes, whose three-dimensional structures have been elucidated by x-ray crystallography: Components of light harvesting cyanobacterial phycobilisomes, the purple bacterial reaction centre, and the blue multi-copper oxidases. A wealth of functional data is available for these systems which allow specific correlations between structure and function and general conclusions about light energy and electron transfer in biological materials to be made.
Collapse
Affiliation(s)
- R Huber
- Max-Planck-Institut für Biochemie, Martinsried
| |
Collapse
|
38
|
Huber R. Eine strukturelle Grundlage für die Übertragung von Lichtenergie und Elektronen in der Biologie (Nobel-Vortrag). Angew Chem Int Ed Engl 1989. [DOI: 10.1002/ange.19891010704] [Citation(s) in RCA: 123] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
39
|
Guard-Friar D, Hanzlik C, MacColl R. Phycoerythrin 566 — a fluorescence study. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1989. [DOI: 10.1016/s0005-2728(89)80411-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
40
|
Sauer K, Scheer H. Excitation transfer in C-phycocyanin. Förster transfer rate and exciton calculations based on new crystal structure data for C-phycocyanins from Agmenellum quadruplicatum and Mastigocladus laminosus. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1988. [DOI: 10.1016/0005-2728(88)90232-0] [Citation(s) in RCA: 63] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
41
|
MacColl R, Guard-Friar D, Ryan TJ, Csatorday K, Wu P. The route of exciton migration in phycocyanin 612. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1988. [DOI: 10.1016/0005-2728(88)90087-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
42
|
Jímenez B, Van Lookeren Campagne MM, Pestaña A, Fernández-Renart M. Regulation of diacylglycerol kinase in the transition from quiescence to proliferation in Dictyostelium discoideum. Biochem Biophys Res Commun 1988; 150:118-25. [PMID: 2827662 DOI: 10.1016/0006-291x(88)90494-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Diacylglycerol kinase and phosphatidylinositol kinase were examined in stationary phase D. discoideum amoeba induced to synchronously proliferate by dilution into fresh medium. Membrane bound diacylglycerol kinase activity showed a rapid and transitory 3-5 fold increase in the preproliferative interphase while phosphatidylinositol kinase activity was kept quite constant during the same period. The changes in diacylglycerol kinase activity seem to be due to a translocation of the enzyme from the soluble to the particulate cell compartments.
Collapse
Affiliation(s)
- B Jímenez
- Instituto de Investigaciones Biomédicas, CSIC y Departamento de Bioquímica, F. Medicina UAM, Spain
| | | | | | | |
Collapse
|
43
|
Köhler W, Friedrich J, Fischer R, Scheer H. Site-selective spectroscopy and level ordering in C-phycocyanine. Chem Phys Lett 1988. [DOI: 10.1016/0009-2614(88)87032-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
44
|
Schirmer T, Vincent MG. Polarized absorption and fluorescence spectra of single crystals of C-phycocyanin. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1987. [DOI: 10.1016/0005-2728(87)90090-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
45
|
Sauer K, Scheer H, Sauer P. FÖRSTER TRANSFER CALCULATIONS BASED ON CRYSTAL STRUCTURE DATA FROM Agmenellum quadruplicatum C-PHYCOCYANIN. Photochem Photobiol 1987. [DOI: 10.1111/j.1751-1097.1987.tb04790.x] [Citation(s) in RCA: 78] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
46
|
Csatorday K, MacColl R, Guard-Friar D, Hanzlik CA. Excitation energy transfer between sensitizing chromophores of phycocyanin 612. Photochem Photobiol 1987; 45:845-8. [PMID: 3628505 DOI: 10.1111/j.1751-1097.1987.tb07893.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
47
|
Zuber H, Brunisholz R, Sidler W. Chapter 11 Structure and function of light-harvesting pigment-protein complexes. NEW COMPREHENSIVE BIOCHEMISTRY 1987. [DOI: 10.1016/s0167-7306(08)60142-8] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
48
|
Jímenez B, Fernandez-Renart M, Pestaña A. Changes in the plasma membrane ATPase activity in relationship to cell proliferation in Dictyostelium. Biochem Biophys Res Commun 1986; 141:1092-8. [PMID: 2880581 DOI: 10.1016/s0006-291x(86)80155-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The plasma membrane ATPase activity of Dictyostelium amoebae increases ca 2.5 fold from non dividing stationary phase cells to synchronously growing cells. This increase in ATPase activity takes place during the three hours lag period that precede the cell division after diluting stationary cells into fresh medium and is prevented by cycloheximide. No differences in the Km for ATP or in the optimal pH for activity were observed in kinetic studies carried out with purified plasma membranes from stationary and proliferating cells.
Collapse
|
49
|
The microenvironment around the chromophores and its changes due to the association states in C-phycocyanin isolated from the cyanobacterium Mastigocladus laminosus. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 1986. [DOI: 10.1016/0005-2728(86)90081-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
50
|
Wendler J, John W, Scheer H, Hoezwarth AR. ENERGY TRANSFER IN TRIMERIC C-PHYCOCYANIN STUDIED BY PICOSECOND FLUORESCENCE KINETICS. Photochem Photobiol 1986. [DOI: 10.1111/j.1751-1097.1986.tb03567.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|