1
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Stadnichuk IN, Krasilnikov PM. Relationship between non-photochemical quenching efficiency and the energy transfer rate from phycobilisomes to photosystem II. PHOTOSYNTHESIS RESEARCH 2024; 159:177-189. [PMID: 37328680 DOI: 10.1007/s11120-023-01031-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Accepted: 06/02/2023] [Indexed: 06/18/2023]
Abstract
The chromophorylated PBLcm domain of the ApcE linker protein in the cyanobacterial phycobilisome (PBS) serves as a bottleneck for Förster resonance energy transfer (FRET) from the PBS to the antennal chlorophyll of photosystem II (PS II) and as a redirection point for energy distribution to the orange protein ketocarotenoid (OCP), which is excitonically coupled to the PBLcm chromophore in the process of non-photochemical quenching (NPQ) under high light conditions. The involvement of PBLcm in the quenching process was first directly demonstrated by measuring steady-state fluorescence spectra of cyanobacterial cells at different stages of NPQ development. The time required to transfer energy from the PBLcm to the OCP is several times shorter than the time it takes to transfer energy from the PBLcm to the PS II, ensuring quenching efficiency. The data obtained provide an explanation for the different rates of PBS quenching in vivo and in vitro according to the half ratio of OCP/PBS in the cyanobacterial cell, which is tens of times lower than that realized for an effective NPQ process in solution.
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Affiliation(s)
- Igor N Stadnichuk
- K.A. Timiryazev Institute of Plant Physiology, RAS, Botanicheskaya 35, 127726, Moscow, Russia.
| | - Pavel M Krasilnikov
- Biological Faculty of M.V., Lomonosov State University, Lenin Hills 12, 119991, Moscow, Russia
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2
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Sharawy M, Pigni NB, May ER, Gascón JA. A favorable path to domain separation in the orange carotenoid protein. Protein Sci 2022; 31:850-863. [PMID: 35000233 PMCID: PMC8927859 DOI: 10.1002/pro.4273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 12/24/2021] [Accepted: 01/03/2022] [Indexed: 11/10/2022]
Abstract
The orange carotenoid protein (OCP) is responsible for nonphotochemical quenching (NPQ) in cyanobacteria, a defense mechanism against potentially damaging effects of excess light conditions. This soluble two-domain protein undergoes profound conformational changes upon photoactivation, involving translocation of the ketocarotenoid inside the cavity followed by domain separation. Domain separation is a critical step in the photocycle of OCP because it exposes the N-terminal domain (NTD) to perform quenching of the phycobilisomes. Many details regarding the mechanism and energetics of OCP domain separation remain unknown. In this work, we apply metadynamics to elucidate the protein rearrangements that lead to the active, domain-separated, form of OCP. We find that translocation of the ketocarotenoid canthaxanthin has a profound effect on the energetic landscape and that domain separation only becomes favorable following translocation. We further explore, characterize, and validate the free energy surface (FES) using equilibrium simulations initiated from different states on the FES. Through pathway optimization methods, we characterize the most probable path to domain separation and reveal the barriers along that pathway. We find that the free energy barriers are relatively small (<5 kcal/mol), but the overall estimated kinetic rate is consistent with experimental measurements (>1 ms). Overall, our results provide detailed information on the requirement for canthaxanthin translocation to precede domain separation and an energetically feasible pathway to dissociation.
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Affiliation(s)
- Mahmoud Sharawy
- Department of Molecular and Cell BiologyUniversity of ConnecticutStorrsConnecticutUSA
| | - Natalia B. Pigni
- Department of ChemistryUniversity of ConnecticutStorrsConnecticutUSA
- Instituto de Ciencia y Tecnología de Alimentos Córdoba (ICYTAC‐CONICET)Ciudad UniversitariaCórdobaArgentina
| | - Eric R. May
- Department of Molecular and Cell BiologyUniversity of ConnecticutStorrsConnecticutUSA
| | - José A. Gascón
- Department of ChemistryUniversity of ConnecticutStorrsConnecticutUSA
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3
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Krasilnikov PM, Zlenko DV, Stadnichuk IN. Rates and pathways of energy migration from the phycobilisome to the photosystem II and to the orange carotenoid protein in cyanobacteria. FEBS Lett 2019; 594:1145-1154. [PMID: 31799708 DOI: 10.1002/1873-3468.13709] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 11/27/2019] [Accepted: 11/28/2019] [Indexed: 02/01/2023]
Abstract
The phycobilisome (PBS) is the cyanobacterial antenna complex which transfers absorbed light energy to the photosystem II (PSII), while the excess energy is nonphotochemically quenched by interaction of the PBS with the orange carotenoid protein (OCP). Here, the molecular model of the PBS-PSII-OCP supercomplex was utilized to assess the resonance energy transfer from PBS to PSII and, using the excitonic theory, the transfer from PBS to OCP. Our estimates show that the effective energy migration from PBS to PSII is realized due to the existence of several transfer pathways from phycobilin chromophores of the PBS to the neighboring antennal chlorophyll molecules of the PSII. At the same time, the single binding site of photoactivated OCP and the PBS is sufficient to realize the quenching.
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Affiliation(s)
| | - Dmitry V Zlenko
- Faculty of Biology, M.V. Lomonosov State University, Moscow, Russia
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4
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Engineering the orange carotenoid protein for applications in synthetic biology. Curr Opin Struct Biol 2019; 57:110-117. [DOI: 10.1016/j.sbi.2019.01.023] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/13/2019] [Accepted: 01/28/2019] [Indexed: 12/18/2022]
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5
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Maksimov EG, Li WJ, Protasova EA, Friedrich T, Ge B, Qin S, Sluchanko NN. Hybrid coupling of R-phycoerythrin and the orange carotenoid protein supports the FRET-based mechanism of cyanobacterial photoprotection. Biochem Biophys Res Commun 2019; 516:699-704. [DOI: 10.1016/j.bbrc.2019.06.098] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 06/18/2019] [Indexed: 12/31/2022]
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6
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Squires AH, Dahlberg PD, Liu H, Magdaong NCM, Blankenship RE, Moerner WE. Single-molecule trapping and spectroscopy reveals photophysical heterogeneity of phycobilisomes quenched by Orange Carotenoid Protein. Nat Commun 2019; 10:1172. [PMID: 30862823 PMCID: PMC6414729 DOI: 10.1038/s41467-019-09084-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 02/15/2019] [Indexed: 11/09/2022] Open
Abstract
The Orange Carotenoid Protein (OCP) is a cytosolic photosensor that is responsible for non-photochemical quenching (NPQ) of the light-harvesting process in most cyanobacteria. Upon photoactivation by blue-green light, OCP binds to the phycobilisome antenna complex, providing an excitonic trap to thermally dissipate excess energy. At present, both the binding site and NPQ mechanism of OCP are unknown. Using an Anti-Brownian ELectrokinetic (ABEL) trap, we isolate single phycobilisomes in free solution, both in the presence and absence of activated OCP, to directly determine the photophysics and heterogeneity of OCP-quenched phycobilisomes. Surprisingly, we observe two distinct OCP-quenched states, with lifetimes 0.09 ns (6% of unquenched brightness) and 0.21 ns (11% brightness). Photon-by-photon Monte Carlo simulations of exciton transfer through the phycobilisome suggest that the observed quenched states are kinetically consistent with either two or one bound OCPs, respectively, underscoring an additional mechanism for excitation control in this key photosynthetic unit. Upon photoactivation the Orange Carotenoid Protein (OCP) binds to the phycobilisome and prevents damage by thermally dissipating excess energy. Here authors use an Anti-Brownian ELectrokinetic trap to determine the photophysics of single OCP-quenched phycobilisomes and observe two distinct OCP-quenched states with either one or two OCPs bound.
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Affiliation(s)
- Allison H Squires
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
| | - Peter D Dahlberg
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
| | - Haijun Liu
- Departments of Biology and Chemistry, Washington University in St. Louis, St. Louis, MO, 63130, USA
| | - Nikki Cecil M Magdaong
- Departments of Biology and Chemistry, Washington University in St. Louis, St. Louis, MO, 63130, USA
| | - Robert E Blankenship
- Departments of Biology and Chemistry, Washington University in St. Louis, St. Louis, MO, 63130, USA
| | - W E Moerner
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA.
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7
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Zlenko DV, Elanskaya IV, Lukashev EP, Bolychevtseva YV, Suzina NE, Pojidaeva ES, Kononova IA, Loktyushkin AV, Stadnichuk IN. Role of the PB-loop in ApcE and phycobilisome core function in cyanobacterium Synechocystis sp. PCC 6803. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2019; 1860:155-166. [DOI: 10.1016/j.bbabio.2018.10.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 10/04/2018] [Accepted: 10/29/2018] [Indexed: 11/30/2022]
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8
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Sonani RR, Gardiner A, Rastogi RP, Cogdell R, Robert B, Madamwar D. Site, trigger, quenching mechanism and recovery of non-photochemical quenching in cyanobacteria: recent updates. PHOTOSYNTHESIS RESEARCH 2018; 137:171-180. [PMID: 29574660 DOI: 10.1007/s11120-018-0498-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Accepted: 03/08/2018] [Indexed: 06/08/2023]
Abstract
Cyanobacteria exhibit a novel form of non-photochemical quenching (NPQ) at the level of the phycobilisome. NPQ is a process that protects photosystem II (PSII) from possible highlight-induced photo-damage. Although significant advancement has been made in understanding the NPQ, there are still some missing details. This critical review focuses on how the orange carotenoid protein (OCP) and its partner fluorescence recovery protein (FRP) control the extent of quenching. What is and what is not known about the NPQ is discussed under four subtitles; where does exactly the site of quenching lie? (site), how is the quenching being triggered? (trigger), molecular mechanism of quenching (quenching) and recovery from quenching. Finally, a recent working model of NPQ, consistent with recent findings, is been described.
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Affiliation(s)
- Ravi R Sonani
- Post-Graduate Department of Biosciences, Sardar Patel University, Bakrol, Anand, Gujarat, 388315, India.
- Institute of Molecular, Cell and System Biology, University of Glasgow, Glasgow, G12 8TA, UK.
- CEA, Institute of Biology and Technology of Saclay, CNRS, 91191, Gif/Yvette, France.
- School of Sciences, P. P. Savani University, Dhamdod, Kosamba, Surat, Gujarat, 394125, India.
| | - Alastair Gardiner
- Institute of Molecular, Cell and System Biology, University of Glasgow, Glasgow, G12 8TA, UK
| | - Rajesh P Rastogi
- Post-Graduate Department of Biosciences, Sardar Patel University, Bakrol, Anand, Gujarat, 388315, India
| | - Richard Cogdell
- Institute of Molecular, Cell and System Biology, University of Glasgow, Glasgow, G12 8TA, UK.
| | - Bruno Robert
- CEA, Institute of Biology and Technology of Saclay, CNRS, 91191, Gif/Yvette, France.
| | - Datta Madamwar
- Post-Graduate Department of Biosciences, Sardar Patel University, Bakrol, Anand, Gujarat, 388315, India.
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9
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Elanskaya IV, Zlenko DV, Lukashev EP, Suzina NE, Kononova IA, Stadnichuk IN. Phycobilisomes from the mutant cyanobacterium Synechocystis sp. PCC 6803 missing chromophore domain of ApcE. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2018; 1859:280-291. [DOI: 10.1016/j.bbabio.2018.01.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 12/22/2017] [Accepted: 01/16/2018] [Indexed: 10/18/2022]
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10
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Sluchanko NN, Slonimskiy YB, Maksimov EG. Features of Protein-Protein Interactions in the Cyanobacterial Photoprotection Mechanism. BIOCHEMISTRY (MOSCOW) 2018. [PMID: 29523061 DOI: 10.1134/s000629791713003x] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Photoprotective mechanisms of cyanobacteria are characterized by several features associated with the structure of their water-soluble antenna complexes - the phycobilisomes (PBs). During energy transfer from PBs to chlorophyll of photosystem reaction centers, the "energy funnel" principle is realized, which regulates energy flux due to the specialized interaction of the PBs core with a quenching molecule capable of effectively dissipating electron excitation energy into heat. The role of the quencher is performed by ketocarotenoid within the photoactive orange carotenoid protein (OCP), which is also a sensor for light flux. At a high level of insolation, OCP is reversibly photoactivated, and this is accompanied by a significant change in its structure and spectral characteristics. Such conformational changes open the possibility for protein-protein interactions between OCP and the PBs core (i.e., activation of photoprotection mechanisms) or the fluorescence recovery protein. Even though OCP was discovered in 1981, little was known about the conformation of its active form until recently, as well as about the properties of homologs of its N and C domains. Studies carried out during recent years have made a breakthrough in understanding of the structural-functional organization of OCP and have enabled discovery of new aspects of the regulation of photoprotection processes in cyanobacteria. This review focuses on aspects of protein-protein interactions between the main participants of photoprotection reactions and on certain properties of representatives of newly discovered families of OCP homologs.
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Affiliation(s)
- N N Sluchanko
- Bach Institute of Biochemistry, Federal Research Center "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, 119071, Russia.
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11
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van Stokkum IHM, Gwizdala M, Tian L, Snellenburg JJ, van Grondelle R, van Amerongen H, Berera R. A functional compartmental model of the Synechocystis PCC 6803 phycobilisome. PHOTOSYNTHESIS RESEARCH 2018; 135:87-102. [PMID: 28721458 PMCID: PMC5784004 DOI: 10.1007/s11120-017-0424-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 07/11/2017] [Indexed: 05/28/2023]
Abstract
In the light-harvesting antenna of the Synechocystis PCC 6803 phycobilisome (PB), the core consists of three cylinders, each composed of four disks, whereas each of the six rods consists of up to three hexamers (Arteni et al., Biochim Biophys Acta 1787(4):272-279, 2009). The rods and core contain phycocyanin and allophycocyanin pigments, respectively. Together these pigments absorb light between 400 and 650 nm. Time-resolved difference absorption spectra from wild-type PB and rod mutants have been measured in different quenching and annihilation conditions. Based upon a global analysis of these data and of published time-resolved emission spectra, a functional compartmental model of the phycobilisome is proposed. The model describes all experiments with a common set of parameters. Three annihilation time constants are estimated, 3, 25, and 147 ps, which represent, respectively, intradisk, interdisk/intracylinder, and intercylinder annihilation. The species-associated difference absorption and emission spectra of two phycocyanin and two allophycocyanin pigments are consistently estimated, as well as all the excitation energy transfer rates. Thus, the wild-type PB containing 396 pigments can be described by a functional compartmental model of 22 compartments. When the interhexamer equilibration within a rod is not taken into account, this can be further simplified to ten compartments, which is the minimal model. In this model, the slowest excitation energy transfer rates are between the core cylinders (time constants 115-145 ps), and between the rods and the core (time constants 68-115 ps).
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Affiliation(s)
- Ivo H M van Stokkum
- Faculty of Sciences, Institute for Lasers, Life and Biophotonics, VU University Amsterdam, De Boelelaan 1081, 1081 HV, Amsterdam, The Netherlands.
| | - Michal Gwizdala
- Faculty of Sciences, Institute for Lasers, Life and Biophotonics, VU University Amsterdam, De Boelelaan 1081, 1081 HV, Amsterdam, The Netherlands
- Department of Physics, University of Pretoria, Pretoria, South Africa
| | - Lijin Tian
- Faculty of Sciences, Institute for Lasers, Life and Biophotonics, VU University Amsterdam, De Boelelaan 1081, 1081 HV, Amsterdam, The Netherlands
- Laboratory of Biophysics, Wageningen University, Wageningen, The Netherlands
| | - Joris J Snellenburg
- Faculty of Sciences, Institute for Lasers, Life and Biophotonics, VU University Amsterdam, De Boelelaan 1081, 1081 HV, Amsterdam, The Netherlands
| | - Rienk van Grondelle
- Faculty of Sciences, Institute for Lasers, Life and Biophotonics, VU University Amsterdam, De Boelelaan 1081, 1081 HV, Amsterdam, The Netherlands
| | | | - Rudi Berera
- Faculty of Sciences, Institute for Lasers, Life and Biophotonics, VU University Amsterdam, De Boelelaan 1081, 1081 HV, Amsterdam, The Netherlands
- Department of Food Sciences, Faculty of Agriculture, Kagawa University, Miki-cho, Kagawa, 761-0795, Japan
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12
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Zlenko DV, Galochkina TV, Krasilnikov PM, Stadnichuk IN. Coupled rows of PBS cores and PSII dimers in cyanobacteria: symmetry and structure. PHOTOSYNTHESIS RESEARCH 2017; 133:245-260. [PMID: 28365856 DOI: 10.1007/s11120-017-0362-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Accepted: 02/23/2017] [Indexed: 05/26/2023]
Abstract
Phycobilisome (PBS) is a giant water-soluble photosynthetic antenna transferring the energy of absorbed light mainly to the photosystem II (PSII) in cyanobacteria. Under the low light conditions, PBSs and PSII dimers form coupled rows where each PBS is attached to the cytoplasmic surface of PSII dimer, and PBSs come into contact with their face surfaces (state 1). The model structure of the PBS core that we have developed earlier by comparison and combination of different fine allophycocyanin crystals, as reported in Zlenko et al. (Photosynth Res 130(1):347-356, 2016b), provides a natural way of the PBS core face-to-face stacking. According to our model, the structure of the protein-protein contact between the neighboring PBS cores in the rows is the same as the contact between the APC hexamers inside the PBS core. As a result, the rates of energy transfer between the cores can occur, and the row of PBS cores acts as an integral PBS "supercore" providing energy transfer between the individual PBS cores. The PBS cores row pitch in our elaborated model (12.4 nm) is very close to the PSII dimers row pitch obtained by the electron microscopy (12.2 nm) that allowed to unite a model of the PBS cores row with a model of the PSII dimers row. Analyzing the resulting model, we have determined the most probable locations of ApcD and ApcE terminal emitter subunits inside the bottom PBS core cylinders and also revealed the chlorophyll molecules of PSII gathering energy from the PBS.
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Affiliation(s)
- Dmitry V Zlenko
- Biological Faculty of M.V. Lomonosov Moscow State University, Lenin Hills, 1/12, Moscow, Russia, 119991.
- K.A. Timiryazev Institute of Plant Physiology RAS, Botanicheskaya St, 35, Moscow, Russia, 127276.
| | - Tatiana V Galochkina
- Biological Faculty of M.V. Lomonosov Moscow State University, Lenin Hills, 1/12, Moscow, Russia, 119991
- INRIA Team Dracula, INRIA Antenne Lyon la Doua, 69603, Villeurbanne, France
- Institut Camille Jordan, UMR 5208 CNRS, University Lyon 1, 69622, Villeurbanne, France
| | - Pavel M Krasilnikov
- Biological Faculty of M.V. Lomonosov Moscow State University, Lenin Hills, 1/12, Moscow, Russia, 119991
- K.A. Timiryazev Institute of Plant Physiology RAS, Botanicheskaya St, 35, Moscow, Russia, 127276
| | - Igor N Stadnichuk
- K.A. Timiryazev Institute of Plant Physiology RAS, Botanicheskaya St, 35, Moscow, Russia, 127276
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13
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Huang JJ, Lin S, Xu W, Cheung PCK. Occurrence and biosynthesis of carotenoids in phytoplankton. Biotechnol Adv 2017; 35:597-618. [DOI: 10.1016/j.biotechadv.2017.05.001] [Citation(s) in RCA: 58] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 04/13/2017] [Accepted: 05/11/2017] [Indexed: 01/08/2023]
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14
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Kerfeld CA, Melnicki MR, Sutter M, Dominguez-Martin MA. Structure, function and evolution of the cyanobacterial orange carotenoid protein and its homologs. THE NEW PHYTOLOGIST 2017; 215:937-951. [PMID: 28675536 DOI: 10.1111/nph.14670] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 05/09/2017] [Indexed: 06/07/2023]
Abstract
Contents 937 I. 937 II. 938 III. 939 IV. 943 V. 947 VI. 948 948 References 949 SUMMARY: The orange carotenoid protein (OCP) is a water-soluble, photoactive protein involved in thermal dissipation of excess energy absorbed by the light-harvesting phycobilisomes (PBS) in cyanobacteria. The OCP is structurally and functionally modular, consisting of a sensor domain, an effector domain and a keto-carotenoid. On photoactivation, the OCP converts from a stable orange form, OCPO , to a red form, OCPR . Activation is accompanied by a translocation of the carotenoid deeper into the effector domain. The increasing availability of cyanobacterial genomes has enabled the identification of new OCP families (OCP1, OCP2, OCPX). The fluorescence recovery protein (FRP) detaches OCP1 from the PBS core, accelerating its back-conversion to OCPO ; by contrast, other OCP families are not regulated by FRP. N-terminal domain homologs, the helical carotenoid proteins (HCPs), have been found among diverse cyanobacteria, occurring as multiple paralogous groups, with two representatives exhibiting strong singlet oxygen (1 O2 ) quenching (HCP2, HCP3) and another capable of dissipating PBS excitation (HCP4). Crystal structures are presently available for OCP1 and HCP1, and models of other HCP subtypes can be readily produced as a result of strong sequence conservation, providing new insights into the determinants of carotenoid binding and 1 O2 quenching.
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Affiliation(s)
- Cheryl A Kerfeld
- MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI, 48824, USA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
- Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, MI, 48824, USA
| | - Matthew R Melnicki
- MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI, 48824, USA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Markus Sutter
- MSU-DOE Plant Research Laboratory, Michigan State University, East Lansing, MI, 48824, USA
- Molecular Biophysics and Integrated Bioimaging Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
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15
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Lu Y, Liu H, Saer R, Li VL, Zhang H, Shi L, Goodson C, Gross ML, Blankenship RE. A Molecular Mechanism for Nonphotochemical Quenching in Cyanobacteria. Biochemistry 2017; 56:2812-2823. [PMID: 28513152 DOI: 10.1021/acs.biochem.7b00202] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The cyanobacterial orange carotenoid protein (OCP) protects photosynthetic cyanobacteria from photodamage by dissipating excess excitation energy collected by phycobilisomes (PBS) as heat. Dissociation of the PBS-OCP complex in vivo is facilitated by another protein known as the fluorescence recovery protein (FRP), which primarily exists as a dimeric complex. We used various mass spectrometry (MS)-based techniques to investigate the molecular mechanism of this FRP-mediated process. FRP in the dimeric state (dFRP) retains its high affinity for the C-terminal domain (CTD) of OCP in the red state (OCPr). Site-directed mutagenesis and native MS suggest the head region on FRP is a candidate to bind OCP. After attachment to the CTD, the conformational changes of dFRP allow it to bridge the two domains, facilitating the reversion of OCPr into the orange state (OCPo) accompanied by a structural rearrangement of dFRP. Interestingly, we found a mutual response between FRP and OCP; that is, FRP and OCPr destabilize each other, whereas FRP and OCPo stabilize each other. A detailed mechanism of FRP function is proposed on the basis of the experimental results.
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Affiliation(s)
- Yue Lu
- Department of Chemistry, Washington University in St. Louis , St. Louis, Missouri 63130, United States.,Photosynthetic Antenna Research Center, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Haijun Liu
- Photosynthetic Antenna Research Center, Washington University in St. Louis , St. Louis, Missouri 63130, United States.,Department of Biology, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Rafael Saer
- Photosynthetic Antenna Research Center, Washington University in St. Louis , St. Louis, Missouri 63130, United States.,Department of Biology, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Veronica L Li
- Department of Chemistry, Washington University in St. Louis , St. Louis, Missouri 63130, United States.,Photosynthetic Antenna Research Center, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Hao Zhang
- Department of Chemistry, Washington University in St. Louis , St. Louis, Missouri 63130, United States.,Photosynthetic Antenna Research Center, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Liuqing Shi
- Department of Chemistry, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Carrie Goodson
- Photosynthetic Antenna Research Center, Washington University in St. Louis , St. Louis, Missouri 63130, United States.,Department of Biology, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Michael L Gross
- Department of Chemistry, Washington University in St. Louis , St. Louis, Missouri 63130, United States.,Photosynthetic Antenna Research Center, Washington University in St. Louis , St. Louis, Missouri 63130, United States
| | - Robert E Blankenship
- Department of Chemistry, Washington University in St. Louis , St. Louis, Missouri 63130, United States.,Photosynthetic Antenna Research Center, Washington University in St. Louis , St. Louis, Missouri 63130, United States.,Department of Biology, Washington University in St. Louis , St. Louis, Missouri 63130, United States
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16
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Stadnichuk IN, Tropin IV. Phycobiliproteins: Structure, functions and biotechnological applications. APPL BIOCHEM MICRO+ 2017. [DOI: 10.1134/s0003683817010185] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Elanskaya IV, Kononova IA, Lukashev EP, Bolychevtseva YV, Yanushin MF, Stadnichuk IN. Functions of chromophore-containing domain in the large linker LCM- polypeptide of phycobilisome. DOKL BIOCHEM BIOPHYS 2017; 471:403-406. [DOI: 10.1134/s1607672916060077] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Indexed: 11/23/2022]
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Kirilovsky D, Kerfeld CA. Cyanobacterial photoprotection by the orange carotenoid protein. NATURE PLANTS 2016; 2:16180. [PMID: 27909300 DOI: 10.1038/nplants.2016.180] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Accepted: 10/20/2016] [Indexed: 05/18/2023]
Abstract
In photosynthetic organisms, the production of dangerous oxygen species is stimulated under high irradiance. To cope with this stress, these organisms have evolved photoprotective mechanisms. One type of mechanism functions to decrease the energy arriving at the photochemical centres by increasing thermal dissipation at the level of antennae. In cyanobacteria, the trigger for this mechanism is the photoactivation of a soluble carotenoid protein, the orange carotenoid protein (OCP), which is a structurally and functionally modular protein. The inactive orange form (OCPo) is compact and globular, with the carotenoid spanning the effector and the regulatory domains. In the active red form (OCPr), the two domains are completely separated and the carotenoid has translocated entirely into the effector domain. The activated OCPr interacts with the phycobilisome (PBS), the cyanobacterial antenna, and induces excitation-energy quenching. A second protein, the fluorescence recovery protein (FRP), dislodges the active OCPr from the PBSs and accelerates its conversion to the inactive OCP.
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Affiliation(s)
- Diana Kirilovsky
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Université Paris-Sud, Université Paris-Saclay, 91198 Gif-sur-Yvette, France
- Institut de Biologie et Technologies de Saclay (iBiTec-S), Commissariat à l'Energie Atomique (CEA), 91191 Gif-sur-Yvette, France
| | - Cheryl A Kerfeld
- MSU-DOE Plant Research Laboratory and Department of Biochemistry and Molecular Biology, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Plant and Microbial Biology, University of California, Berkeley, California 94720, USA
- Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
- Berkeley Synthetic Biology Institute, Berkeley, California 94720, USA
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Computational study on the color change of 3′-hydroxyechinenone in the orange carotenoid protein. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.04.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Orange carotenoid protein burrows into the phycobilisome to provide photoprotection. Proc Natl Acad Sci U S A 2016; 113:E1655-62. [PMID: 26957606 DOI: 10.1073/pnas.1523680113] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In cyanobacteria, photoprotection from overexcitation of photochemical centers can be obtained by excitation energy dissipation at the level of the phycobilisome (PBS), the cyanobacterial antenna, induced by the orange carotenoid protein (OCP). A single photoactivated OCP bound to the core of the PBS affords almost total energy dissipation. The precise mechanism of OCP energy dissipation is yet to be fully determined, and one question is how the carotenoid can approach any core phycocyanobilin chromophore at a distance that can promote efficient energy quenching. We have performed intersubunit cross-linking using glutaraldehyde of the OCP and PBS followed by liquid chromatography coupled to tandem mass spectrometry (LC/MS-MS) to identify cross-linked residues. The only residues of the OCP that cross-link with the PBS are situated in the linker region, between the N- and C-terminal domains and a single C-terminal residue. These links have enabled us to construct a model of the site of OCP binding that differs from previous models. We suggest that the N-terminal domain of the OCP burrows tightly into the PBS while leaving the OCP C-terminal domain on the exterior of the complex. Further analysis shows that the position of the small core linker protein ApcC is shifted within the cylinder cavity, serving to stabilize the interaction between the OCP and the PBS. This is confirmed by a ΔApcC mutant. Penetration of the N-terminal domain can bring the OCP carotenoid to within 5-10 Å of core chromophores; however, alteration of the core structure may be the actual source of energy dissipation.
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Otsuka M, Mori Y, Takano K. Theoretical study on photophysical properties of 3′-hydroxyechinenone and the effects of interactions with orange carotenoid protein. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.01.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Krasilnikov PM, Zlenko DV, Stadnichuk IN. The efficiency of non-photochemical fluorescence quenching of phycobilisomes by the orange carotenoid protein. Biophysics (Nagoya-shi) 2015. [DOI: 10.1134/s0006350915050103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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