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Ballesteros U, González-Ramirez EJ, de la Arada I, Sot J, Etxaniz A, Goñi FM, Alonso A, Montes LR. Effects of a N-Maleimide-derivatized Phosphatidylethanolamine on the Architecture and Properties of Lipid Bilayers. Int J Mol Sci 2023; 24:16570. [PMID: 38068893 PMCID: PMC10706405 DOI: 10.3390/ijms242316570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 11/15/2023] [Accepted: 11/19/2023] [Indexed: 12/18/2023] Open
Abstract
N-maleimide-derivatized phospholipids are often used to facilitate protein anchoring to membranes. In autophagy studies, this is applied to the covalent binding of Atg8, an autophagy protein, to a phosphatidylethanolamine (PE) in the nascent autophagosome. However, the question remains on how closely the N-maleimide PE derivative (PE-mal) mimicks the native PE in the bilayer. In the present paper, spectroscopic and calorimetric techniques have been applied to vesicles containing either PE or PE-mal (together with other phospholipids) to compare the properties of the native and derivatized forms of PE. According to differential scanning calorimetry, and to infrared spectroscopy, the presence of PE-mal did not perturb the fatty acyl chains in the bilayer. Fluorescence spectroscopy and microscopy showed that PE-mal did not alter the bilayer permeability either. However, fluorescence emission polarization of the Laurdan and DPH probes indicated an increased order, or decreased fluidity, in the bilayers containing PE-mal. In addition, the infrared spectral data from the phospholipid phosphate region revealed a PE-mal-induced conformational change in the polar heads, accompanied by increased hydration. Globally considered, the results suggest that PE-mal would be a reasonable substitute for PE in model membranes containing reconstituted proteins.
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Affiliation(s)
| | | | | | | | | | - Félix M. Goñi
- Department of Biochemistry, Instituto Biofisika (CSIC, UPV/EHU), University of the Basque Country, 48940 Leioa, Spain; (U.B.); (E.J.G.-R.); (I.d.l.A.); (J.S.); (A.E.); (A.A.); (L.R.M.)
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2
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Braasch-Turi MM, Koehn JT, Crans DC. Chemistry of Lipoquinones: Properties, Synthesis, and Membrane Location of Ubiquinones, Plastoquinones, and Menaquinones. Int J Mol Sci 2022; 23:12856. [PMID: 36361645 PMCID: PMC9656164 DOI: 10.3390/ijms232112856] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/20/2022] [Accepted: 10/21/2022] [Indexed: 07/30/2023] Open
Abstract
Lipoquinones are the topic of this review and are a class of hydrophobic lipid molecules with key biological functions that are linked to their structure, properties, and location within a biological membrane. Ubiquinones, plastoquinones, and menaquinones vary regarding their quinone headgroup, isoprenoid sidechain, properties, and biological functions, including the shuttling of electrons between membrane-bound protein complexes within the electron transport chain. Lipoquinones are highly hydrophobic molecules that are soluble in organic solvents and insoluble in aqueous solution, causing obstacles in water-based assays that measure their chemical properties, enzyme activities and effects on cell growth. Little is known about the location and ultimately movement of lipoquinones in the membrane, and these properties are topics described in this review. Computational studies are particularly abundant in the recent years in this area, and there is far less experimental evidence to verify the often conflicting interpretations and conclusions that result from computational studies of very different membrane model systems. Some recent experimental studies have described using truncated lipoquinone derivatives, such as ubiquinone-2 (UQ-2) and menaquinone-2 (MK-2), to investigate their conformation, their location in the membrane, and their biological function. Truncated lipoquinone derivatives are soluble in water-based assays, and hence can serve as excellent analogs for study even though they are more mobile in the membrane than the longer chain counterparts. In this review, we will discuss the properties, location in the membrane, and syntheses of three main classes of lipoquinones including truncated derivatives. Our goal is to highlight the importance of bridging the gap between experimental and computational methods and to incorporate properties-focused considerations when proposing future studies relating to the function of lipoquinones in membranes.
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Affiliation(s)
| | - Jordan T. Koehn
- Chemistry Department, Colorado State University, Fort Collins, CO 80523, USA
| | - Debbie C. Crans
- Chemistry Department, Colorado State University, Fort Collins, CO 80523, USA
- Cell & Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, USA
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Braasch-Turi MM, Koehn JT, Kostenkova K, Van Cleave C, Ives JW, Murakami HA, Crick DC, Crans DC. Electron Transport Lipids Fold Within Membrane-Like Interfaces. Front Chem 2022; 10:827530. [PMID: 35350775 PMCID: PMC8957872 DOI: 10.3389/fchem.2022.827530] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 01/07/2022] [Indexed: 12/23/2022] Open
Abstract
Lipoquinones, such as ubiquinones (UQ) and menaquinones (MK), function as essential lipid components of the electron transport system (ETS) by shuttling electrons and protons to facilitate the production of ATP in eukaryotes and prokaryotes. Lipoquinone function in membrane systems has been widely studied, but the exact location and conformation within membranes remains controversial. Lipoquinones, such as Coenzyme Q (UQ-10), are generally depicted simply as “Q” in life science diagrams or in extended conformations in primary literature even though specific conformations are important for function in the ETS. In this study, our goal was to determine the location, orientation, and conformation of UQ-2, a truncated analog of UQ-10, in model membrane systems and to compare our results to previously studied MK-2. Herein, we first carried out a six-step synthesis to yield UQ-2 and then demonstrated that UQ-2 adopts a folded conformation in organic solvents using 1H-1H 2D NOESY and ROESY NMR spectroscopic studies. Similarly, using 1H-1H 2D NOESY NMR spectroscopic studies, UQ-2 was found to adopt a folded, U-shaped conformation within the interface of an AOT reverse micelle model membrane system. UQ-2 was located slightly closer to the surfactant-water interface compared to the more hydrophobic MK-2. In addition, Langmuir monolayer studies determined UQ-2 resided within the monolayer water-phospholipid interface causing expansion, whereas MK-2 was more likely to be compressed out and reside within the phospholipid tails. All together these results support the model that lipoquinones fold regardless of the headgroup structure but that the polarity of the headgroup influences lipoquinone location within the membrane interface. These results have implications regarding the redox activity near the interface as quinone vs. quinol forms may facilitate locomotion of lipoquinones within the membrane. The location, orientation, and conformation of lipoquinones are critical for their function in generating cellular energy within membrane ETS, and the studies described herein shed light on the behavior of lipoquinones within membrane-like environments.
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Affiliation(s)
| | - Jordan T. Koehn
- Chemistry Department, Colorado State University, Fort Collins, CO, United States
| | - Kateryna Kostenkova
- Chemistry Department, Colorado State University, Fort Collins, CO, United States
| | - Cameron Van Cleave
- Chemistry Department, Colorado State University, Fort Collins, CO, United States
| | - Jacob W. Ives
- Chemistry Department, Colorado State University, Fort Collins, CO, United States
| | - Heide A. Murakami
- Chemistry Department, Colorado State University, Fort Collins, CO, United States
| | - Dean C. Crick
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO, United States
- Microbiology, Immunology, and Pathology Department, Colorado State University, Fort Collins, CO, United States
| | - Debbie C. Crans
- Chemistry Department, Colorado State University, Fort Collins, CO, United States
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO, United States
- *Correspondence: Debbie C. Crans,
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Andrade S, Ramalho MJ, Loureiro JA, Pereira MC. Liposomes as biomembrane models: Biophysical techniques for drug-membrane interaction studies. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116141] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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5
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Hossain M, Blanchard GJ. Ceramide-mediation of diffusion in supported lipid bilayers. Chem Phys Lipids 2021; 238:105090. [PMID: 33971138 DOI: 10.1016/j.chemphyslip.2021.105090] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/09/2021] [Accepted: 05/05/2021] [Indexed: 11/30/2022]
Abstract
The fluidity and compositional heterogeneity of the mammalian plasma membrane play deterministic roles in a variety of membrane functions. Designing model bilayer systems allows for compositional control over these properties. Ceramide is a phospholipid capable of extensive headgroup-region hydrogen bonding, and we report here on the role of ceramide in planar model bilayers. We use fluorescence recovery after photobleaching (FRAP) to obtain translational diffusion constants of two chromophores in supported model bilayers composed of cholesterol, 1,2-dioleoyl-sn-phosphatidylcholine (DOPC), sphingomyelin, and ceramide. FRAP data for perylene report on the acyl chain region of the model bilayer and FRAP data for 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine-N-(lissamine rhodamine B sulfonyl) sense diffusional dynamics in the bilayer headgroup region. Dynamics in the headgroup region exhibit anomalous diffusion behavior that is characteristic of spatially heterogeneous media.
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Affiliation(s)
- Masroor Hossain
- Michigan State University, Department of Chemistry, 578 S. Shaw Lane, East Lansing, MI, 48824, USA
| | - G J Blanchard
- Michigan State University, Department of Chemistry, 578 S. Shaw Lane, East Lansing, MI, 48824, USA.
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Braasch-Turi M, Crans DC. Synthesis of Naphthoquinone Derivatives: Menaquinones, Lipoquinones and Other Vitamin K Derivatives. Molecules 2020; 25:molecules25194477. [PMID: 33003459 PMCID: PMC7582351 DOI: 10.3390/molecules25194477] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 09/26/2020] [Accepted: 09/27/2020] [Indexed: 12/20/2022] Open
Abstract
Menaquinones are a class of isoprenoid molecules that have important roles in human biology and bacterial electron transport, and multiple methods have been developed for their synthesis. These compounds consist of a methylnaphthoquinone (MK) unit and an isoprene side chain, such as found in vitamin K1 (phylloquinone), K2, and other lipoquinones. The most common naturally occurring menaquinones contain multiple isoprene units and are very hydrophobic, rendering it difficult to evaluate the biological activity of these compounds in aqueous assays. One way to overcome this challenge has been the application of truncated MK-derivatives for their moderate solubility in water. The synthesis of such derivatives has been dominated by Friedel-Crafts alkylation with BF3∙OEt2. This attractive method occurs over two steps from commercially available starting materials, but it generally produces low yields and a mixture of isomers. In this review, we summarize reported syntheses of both truncated and naturally occurring MK-derivatives that encompass five different synthetic strategies: Nucleophilic ring methods, metal-mediated reactions, electrophilic ring methods, pericyclic reactions, and homologation and side chain extensions. The advantages and disadvantages of each method are discussed, identifying methods with a focus on high yields, regioselectivity, and stereochemistry leading to a detailed overview of the reported chemistry available for preparation of these compounds.
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Affiliation(s)
| | - Debbie C. Crans
- Chemistry Department, Colorado State University, Ft. Collins, CO 80525, USA;
- Cell & Molecular Biology Program, Colorado State University, Ft. Collins, CO 80525, USA
- Correspondence:
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Van Cleave C, Murakami HA, Samart N, Koehn JT, Maldonado P, Kreckel HD, Cope EJ, Basile A, Crick DC, Crans DC. Location of menaquinone and menaquinol headgroups in model membranes. CAN J CHEM 2020. [DOI: 10.1139/cjc-2020-0024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Menaquinones are lipoquinones that consist of a headgroup (naphthoquinone, menadione) and an isoprenyl sidechain. They function as electron transporters in prokaryotes such as Mycobacterium tuberculosis. For these studies, we used Langmuir monolayers and microemulsions to investigate how the menaquinone headgroup (menadione) and the menahydroquinone headgroup (menadiol) interact with model membrane interfaces to determine if differences are observed in the location of these headgroups in a membrane. It has been suggested that the differences in the locations are mainly caused by the isoprenyl sidechain rather than the headgroup quinone-to-quinol reduction during electron transport. This study presents evidence that suggests the influence of the headgroup drives the movement of the oxidized quinone and the reduced hydroquinone to different locations within the interface. Utilizing the model membranes of microemulsions and Langmuir monolayers, it is determined whether or not there is a difference in the location of menadione and menadiol within the interface. Based on our findings, we conclude that the menadione and menadiol may reside in different locations within model membranes. It follows that if menaquinone moves within the cell membrane upon menaquinol formation, it is due at least in part, to the differences in the properties of headgroup interactions with the membrane in addition to the isoprenyl sidechain.
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Affiliation(s)
- Cameron Van Cleave
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Heide A. Murakami
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Nuttaporn Samart
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
- Department of Chemistry, Rajabhat Rajanagarindra University, Chachoengsao, Thailand
| | - Jordan T. Koehn
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Pablo Maldonado
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Heidi D. Kreckel
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Elana J. Cope
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Andrea Basile
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
| | - Dean C. Crick
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, USA
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO 80523, USA
| | - Debbie C. Crans
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
- Cell and Molecular Biology Program, Colorado State University, Fort Collins, CO 80523, USA
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Ausili A, Clemente J, Pons-Belda ÓD, de Godos A, Corbalán-García S, Torrecillas A, Teruel JA, Gomez-Fernández JC. Interaction of Vitamin K 1 and Vitamin K 2 with Dimyristoylphosphatidylcholine and Their Location in the Membrane. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:1062-1073. [PMID: 31927934 DOI: 10.1021/acs.langmuir.9b03552] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Vitamin K1 and vitamin K2 play very important biological roles as members of chains of electron transport as antioxidants in membranes and as cofactors for the posttranslational modification of proteins that participate in a number of physiological functions such as coagulation. The interaction of these vitamins with dimyristoylphosphatidylcholine (DMPC) model membranes has been studied by using a biophysical approach. It was observed by using differential scanning calorimetry that both vitamins have a very limited miscibility with DMPC and they form domains rich in the vitamins at high concentrations. Experiments using X-ray diffraction also showed the formation of different phases as a consequence of the inclusion of either vitamin K at temperatures below the phase transition. However, in the fluid state, a homogeneous phase was detected, and a decrease in the thickness of the membrane was accompanied by an increase in the water layer thickness. 2H NMR spectroscopy showed that both vitamins K induced a decrease in the onset of the phase transition, which was bigger for vitamin K1, and both vitamins decreased the order of the membrane as seen through the first moment (M1). 1H NOESY MAS-NMR showed that protons located at the rings or at the beginning of the lateral chain of both vitamins K interacted with a clear preference with protons located in the polar part of DMPC. On the other hand, protons located on the lateral chain have a nearer proximity with the methyl end of the myristoyl chains of DMPC. In agreement with the 2H NMR, ATR-FTIR (attenuated total reflectance Fourier transform infrared spectroscopy) indicated that both vitamins decreased the order parameters of DMPC. It was additionally deduced that the lateral chains of both vitamins were oriented almost in parallel to the myristoyl chains of the phospholipid.
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Affiliation(s)
- Alessio Ausili
- Departamento de Bioquı́mica y Biologı́a Molecular "A", Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , Apartado de Correos 4021 , E-30080 Murcia , Spain
| | - Javier Clemente
- Departamento de Bioquı́mica y Biologı́a Molecular "A", Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , Apartado de Correos 4021 , E-30080 Murcia , Spain
| | - Óscar D Pons-Belda
- Departamento de Bioquı́mica y Biologı́a Molecular "A", Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , Apartado de Correos 4021 , E-30080 Murcia , Spain
| | - Ana de Godos
- Departamento de Bioquı́mica y Biologı́a Molecular "A", Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , Apartado de Correos 4021 , E-30080 Murcia , Spain
| | - Senena Corbalán-García
- Departamento de Bioquı́mica y Biologı́a Molecular "A", Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , Apartado de Correos 4021 , E-30080 Murcia , Spain
| | - Alejandro Torrecillas
- Departamento de Bioquı́mica y Biologı́a Molecular "A", Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , Apartado de Correos 4021 , E-30080 Murcia , Spain
| | - José A Teruel
- Departamento de Bioquı́mica y Biologı́a Molecular "A", Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , Apartado de Correos 4021 , E-30080 Murcia , Spain
| | - Juan C Gomez-Fernández
- Departamento de Bioquı́mica y Biologı́a Molecular "A", Facultad de Veterinaria, Regional Campus of International Excellence "Campus Mare Nostrum" , Universidad de Murcia , Apartado de Correos 4021 , E-30080 Murcia , Spain
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Manconi M, Manca ML, Caddeo C, Valenti D, Cencetti C, Diez-Sales O, Nacher A, Mir-Palomo S, Terencio MC, Demurtas D, Gomez-Fernandez JC, Aranda FJ, Fadda AM, Matricardi P. Nanodesign of new self-assembling core-shell gellan-transfersomes loading baicalin and in vivo evaluation of repair response in skin. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 14:569-579. [PMID: 29248674 DOI: 10.1016/j.nano.2017.12.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 09/14/2017] [Accepted: 12/04/2017] [Indexed: 10/18/2022]
Abstract
Gellan nanohydrogel and phospholipid vesicles were combined to incorporate baicalin in new self-assembling core-shell gellan-transfersomes obtained by an easy, scalable method. The vesicles were small in size (~107 nm) and monodispersed (P.I. ≤ 0.24), forming a viscous system (~24 mPa/s) as compared to transfersomes (~1.6 mPa/s), as confirmed by rheological studies. Gellan was anchored to the bilayer domains through cholesterol, and the polymer chains were distributed onto the outer surface of the bilayer, thus forming a core-shell structure, as suggested by SAXS analyses. The optimal carrier ability of core-shell gellan-transfersomes was established by the high deposition of baicalin in the skin (~11% in the whole skin), especially in the deeper tissue (~8% in the dermis). Moreover, their ability to improve baicalin efficacy in anti-inflammatory and skin repair tests was confirmed in vivo in mice, providing the complete skin restoration and inhibiting all the studied inflammatory markers.
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Affiliation(s)
- Maria Manconi
- Dept. of Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy
| | - Maria Letizia Manca
- Dept. of Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy.
| | - Carla Caddeo
- Dept. of Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy
| | - Donatella Valenti
- Dept. of Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy
| | - Claudia Cencetti
- Dept. of Drug chemistry and technologies, Sapienza, University of Roma, Roma, Italy
| | - Octavio Diez-Sales
- Dept. of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Burjassot, Valencia, Spain; Institute of Molecular Recognition and Technological Development, Inter-University Institute from Polytechnic University of Valencia and University of Valencia, Spain
| | - Amparo Nacher
- Dept. of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Burjassot, Valencia, Spain; Institute of Molecular Recognition and Technological Development, Inter-University Institute from Polytechnic University of Valencia and University of Valencia, Spain
| | - Silvia Mir-Palomo
- Dept. of Pharmacy and Pharmaceutical Technology and Parasitology, University of Valencia, Burjassot, Valencia, Spain; Institute of Molecular Recognition and Technological Development, Inter-University Institute from Polytechnic University of Valencia and University of Valencia, Spain
| | | | - Davide Demurtas
- Interdisciplinary Center for Electron Microscopy, Ecole Polytechnique Fédérale de Lausanne, Station 12, Lausanne, Switzerland
| | - Juan Carmelo Gomez-Fernandez
- Dept. of Biochemistry and Molecular Biology A, Regional Campus of International Excellence Campus Mare Nostrum, University of Murcia, Murcia, Spain
| | - Francisco José Aranda
- Dept. of Biochemistry and Molecular Biology A, Regional Campus of International Excellence Campus Mare Nostrum, University of Murcia, Murcia, Spain
| | - Anna Maria Fadda
- Dept. of Scienze della Vita e dell'Ambiente, University of Cagliari, Cagliari, Italy
| | - Pietro Matricardi
- Dept. of Drug chemistry and technologies, Sapienza, University of Roma, Roma, Italy
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The increase in positively charged residues in cecropin D-like Galleria mellonella favors its interaction with membrane models that imitate bacterial membranes. Arch Biochem Biophys 2017; 629:54-62. [DOI: 10.1016/j.abb.2017.07.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 06/16/2017] [Accepted: 07/13/2017] [Indexed: 01/30/2023]
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11
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X-ray diffraction and NMR data for the study of the location of idebenone and idebenol in model membranes. Data Brief 2016; 7:981-9. [PMID: 27408910 PMCID: PMC4927974 DOI: 10.1016/j.dib.2016.03.064] [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: 03/01/2016] [Revised: 03/14/2016] [Accepted: 03/17/2016] [Indexed: 11/20/2022] Open
Abstract
Here we present some of our data about the interaction of idebenone and idebenol with dipalmitoyl-phosphatidylcholine (DPPC). In particular, we include data of small angle X-ray diffraction (SAXD) and wide angle X-ray diffraction experiments, obtention of electronic profiles of the membranes, (2)H-NMR and (31)P-NMR, as part of the research article: "Both idebenone and idebenol are localized near the lipid-water interface of the membrane and increase its fluidity" (Gomez-Murcia et al., 2016) [1]. These data were obtained from model membranes that included different proportions of idebenone and idebenol, at temperatures both above and below of the gel to fluid phase. The X-ray experiments were carried out by using a modified Kratky compact camera (MBraun-Graz-Optical Systems, Graz Austria), incorporating two coupled linear position sensitive detectors. The NMR data were collected from a a Bruker Avance 600 instrument.
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