1
|
Elanskaya IV, Bulychev AA, Lukashev EP, Muronets EM, Maksimov EG. Roles of ApcD and orange carotenoid protein in photoinduction of electron transport upon dark-light transition in the Synechocystis PCC 6803 mutant deficient in flavodiiron protein Flv1. PHOTOSYNTHESIS RESEARCH 2024; 159:97-114. [PMID: 37093504 DOI: 10.1007/s11120-023-01019-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 04/13/2023] [Indexed: 05/03/2023]
Abstract
Flavodiiron proteins Flv1/Flv3 accept electrons from photosystem (PS) I. In this work we investigated light adaptation mechanisms of Flv1-deficient mutant of Synechocystis PCC 6803, incapable to form the Flv1/Flv3 heterodimer. First seconds of dark-light transition were studied by parallel measurements of light-induced changes in chlorophyll fluorescence, P700 redox transformations, fluorescence emission at 77 K, and OCP-dependent fluorescence quenching. During the period of Calvin cycle activation upon dark-light transition, the linear electron transport (LET) in wild type is supported by the Flv1/Flv3 heterodimer, whereas in Δflv1 mutant activation of LET upon illumination is preceded by cyclic electron flow that maintains State 2. The State 2-State 1 transition and Orange Carotenoid Protein (OCP)-dependent non-photochemical quenching occur independently of each other, begin in about 10 s after the illumination of the cells and are accompanied by a short-term re-reduction of the PSI reaction center (P700+). ApcD is important for the State 2-State 1 transition in the Δflv1 mutant, but S-M rise in chlorophyll fluorescence was not completely inhibited in Δflv1/ΔapcD mutant. LET in Δflv1 mutant starts earlier than the S-M rise in chlorophyll fluorescence, and the oxidation of plastoquinol (PQH2) pool promotes the activation of PSII, transient re-reduction of P700+ and transition to State 1. An attempt to induce state transition in the wild type under high intensity light using methyl viologen, highly oxidizing P700 and PQH2, was unsuccessful, showing that oxidation of intersystem electron-transport carriers might be insufficient for the induction of State 2-State 1 transition in wild type of Synechocystis under high light.
Collapse
Affiliation(s)
- Irina V Elanskaya
- Department of Genetics, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Alexander A Bulychev
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Evgeny P Lukashev
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Elena M Muronets
- Department of Genetics, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia
| | - Eugene G Maksimov
- Department of Biophysics, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119991, Russia.
| |
Collapse
|
2
|
Guo R, Wang S, Niu NN, Xu YL, Zhu JX, Scheer H, Noy D, Zhao KH. Dichromic Allophycocyanin Trimer Covering a Broad Spectral Range (550-660 nm). Chemistry 2023; 29:e202203367. [PMID: 36382427 DOI: 10.1002/chem.202203367] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Revised: 11/14/2022] [Accepted: 11/15/2022] [Indexed: 11/17/2022]
Abstract
Phycobilisomes, the light-harvesting complexes of cyanobacteria and red algae, are a resource for photosynthetic, photonic and fluorescence labeling elements. They cover an exceptionally broad spectral range, but the complex superstructure and assembly have been an obstacle. By replacing in Synechocystis sp. PCC 6803 the biliverdin reductases, we studied the role of chromophores in the assembly of the phycobilisome core. Introduction of the green-absorbing phycoerythrobilin instead of the red-absorbing phycocyanobilin inhibited aggregation. A novel, trimeric allophycocyanin (Dic-APC) was obtained. In the small (110 kDa) unit, the two chromophores, phycoerythrobilin and phytochromobilin, cover a wide spectral range (550 to 660 nm). Due to efficient energy transfer, it provides an efficient artificial light-harvesting element. Dic-APC was generated in vitro by using the contained core-linker, LC , for template-assisted purification and assembly. Labeling the linker provides a method for targeting Dic-APC.
Collapse
Affiliation(s)
- Rui Guo
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Si Wang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Nan-Nan Niu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Ya-Li Xu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Jun-Xun Zhu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| | - Hugo Scheer
- Department Biologie I, Universität München, Menzinger Str. 67, D-80638, München, Germany
| | - Dror Noy
- MIGAL-Galilee Research Institute S. Industrial Zone, Kiryat Shmona, Israel.,Faculty of Sciences and Technology, Tel-Hai Academic College, Upper Galilee, Israel
| | - Kai-Hong Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, 430070, P.R. China
| |
Collapse
|
3
|
Dagnino-Leone J, Figueroa CP, Castañeda ML, Youlton AD, Vallejos-Almirall A, Agurto-Muñoz A, Pavón Pérez J, Agurto-Muñoz C. Phycobiliproteins: Structural aspects, functional characteristics, and biotechnological perspectives. Comput Struct Biotechnol J 2022; 20:1506-1527. [PMID: 35422968 PMCID: PMC8983314 DOI: 10.1016/j.csbj.2022.02.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 02/18/2022] [Accepted: 02/19/2022] [Indexed: 12/13/2022] Open
Abstract
Phycobiliproteins (PBPs) are fluorescent proteins of various colors, including fuchsia, purple-blue and cyan, that allow the capture of light energy in auxiliary photosynthetic complexes called phycobilisomes (PBS). PBPs have several highly preserved structural and physicochemical characteristics. In the PBS context, PBPs function is capture luminous energy in the 450–650 nm range and delivers it to photosystems allowing photosynthesis take place. Besides the energy harvesting function, PBPs also have shown to have multiple biological activities, including antioxidant, antibacterial and antitumours, making them an interesting focus for different biotechnological applications in areas like biomedicine, bioenergy and scientific research. Nowadays, the main sources of PBPs are cyanobacteria and micro and macro algae from the phylum Rhodophyta. Due to the diverse biological activities of PBPs, they have attracted the attention of different industries, such as food, biomedical and cosmetics. This is why a large number of patents related to the production, extraction, purification of PBPs and their application as cosmetics, biopharmaceuticals or diagnostic applications have been generated, looking less ecological impact in the natural prairies of macroalgae and less culture time or higher productivity in cyanobacteria to satisfy the markets and applications that require high amounts of these molecules. In this review, we summarize the main structural characteristics of PBPs, their biosynthesys and biotechnological applications. We also address current trends and future perspectives of the PBPs market.
Collapse
Affiliation(s)
- Jorge Dagnino-Leone
- Grupo Interdisciplinario de Biotecnología Marina (GIBMAR), Centro de Biotecnología, Universidad de Concepción, Concepción 4030000, Chile
| | - Cristina Pinto Figueroa
- Grupo Interdisciplinario de Biotecnología Marina (GIBMAR), Centro de Biotecnología, Universidad de Concepción, Concepción 4030000, Chile
| | - Mónica Latorre Castañeda
- Grupo Interdisciplinario de Biotecnología Marina (GIBMAR), Centro de Biotecnología, Universidad de Concepción, Concepción 4030000, Chile
| | - Andrea Donoso Youlton
- Grupo Interdisciplinario de Biotecnología Marina (GIBMAR), Centro de Biotecnología, Universidad de Concepción, Concepción 4030000, Chile
| | - Alejandro Vallejos-Almirall
- Grupo Interdisciplinario de Biotecnología Marina (GIBMAR), Centro de Biotecnología, Universidad de Concepción, Concepción 4030000, Chile
| | - Andrés Agurto-Muñoz
- Grupo Interdisciplinario de Biotecnología Marina (GIBMAR), Centro de Biotecnología, Universidad de Concepción, Concepción 4030000, Chile
| | - Jessy Pavón Pérez
- Grupo Interdisciplinario de Biotecnología Marina (GIBMAR), Centro de Biotecnología, Universidad de Concepción, Concepción 4030000, Chile
- Departamento de Ciencia y Tecnología de los Alimentos (CyTA), Facultad de Farmacia, Universidad de Concepción, Concepción 4030000 Chile
| | - Cristian Agurto-Muñoz
- Grupo Interdisciplinario de Biotecnología Marina (GIBMAR), Centro de Biotecnología, Universidad de Concepción, Concepción 4030000, Chile
- Departamento de Ciencia y Tecnología de los Alimentos (CyTA), Facultad de Farmacia, Universidad de Concepción, Concepción 4030000 Chile
- Corresponding author at: Grupo Interdisciplinario de Biotecnología Marina (GIBMAR), Centro de Biotecnología, Universidad de Concepción, Concepción 4030000, Chile.
| |
Collapse
|
4
|
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]
|
5
|
Nganou C, Adir N, Mkandawire M. Cryospectroscopy Studies of Intact Light-Harvesting Antennas Reveal Empirical Electronic Energy Transitions in Two Cyanobacteria Species. J Phys Chem B 2018; 122:3068-3078. [DOI: 10.1021/acs.jpcb.8b00714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Collins Nganou
- Verschuren Centre for Sustainability in Energy and the Environment, Cape Breton University, P.O. Box 5300, 1250 Grand Lake Road, Sydney, Nova Scotia, Canada B1P 6L2
| | - Noam Adir
- Schulich Faculty of Chemistry, Technion, Israel Institute of Technology, Haifa 32000 Israel
| | - Martin Mkandawire
- Verschuren Centre for Sustainability in Energy and the Environment, Cape Breton University, P.O. Box 5300, 1250 Grand Lake Road, Sydney, Nova Scotia, Canada B1P 6L2
| |
Collapse
|
6
|
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.
Collapse
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
| |
Collapse
|
7
|
Shirshin EA, Nikonova EE, Kuzminov FI, Sluchanko NN, Elanskaya IV, Gorbunov MY, Fadeev VV, Friedrich T, Maksimov EG. Biophysical modeling of in vitro and in vivo processes underlying regulated photoprotective mechanism in cyanobacteria. PHOTOSYNTHESIS RESEARCH 2017; 133:261-271. [PMID: 28386792 DOI: 10.1007/s11120-017-0377-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 03/25/2017] [Indexed: 06/07/2023]
Abstract
Non-photochemical quenching (NPQ) is a mechanism responsible for high light tolerance in photosynthetic organisms. In cyanobacteria, NPQ is realized by the interplay between light-harvesting complexes, phycobilisomes (PBs), a light sensor and effector of NPQ, the photoactive orange carotenoid protein (OCP), and the fluorescence recovery protein (FRP). Here, we introduced a biophysical model, which takes into account the whole spectrum of interactions between PBs, OCP, and FRP and describes the experimental PBs fluorescence kinetics, unraveling interaction rate constants between the components involved and their relative concentrations in the cell. We took benefit from the possibility to reconstruct the photoprotection mechanism and its parts in vitro, where most of the parameters could be varied, to develop the model and then applied it to describe the NPQ kinetics in the Synechocystis sp. PCC 6803 mutant lacking photosystems. Our analyses revealed that while an excess of the OCP over PBs is required to obtain substantial PBs fluorescence quenching in vitro, in vivo the OCP/PBs ratio is less than unity, due to higher local concentration of PBs, which was estimated as ~10-5 M, compared to in vitro experiments. The analysis of PBs fluorescence recovery on the basis of the generalized model of enzymatic catalysis resulted in determination of the FRP concentration in vivo close to 10% of the OCP concentration. Finally, the possible role of the FRP oligomeric state alteration in the kinetics of PBs fluorescence was shown. This paper provides the most comprehensive model of the OCP-induced PBs fluorescence quenching to date and the results are important for better understanding of the regulatory molecular mechanisms underlying NPQ in cyanobacteria.
Collapse
Affiliation(s)
- Evgeny A Shirshin
- Department of Physics, M.V. Lomonosov Moscow State University, Leninskie Gory 1/2, Moscow, Russia, 119991.
| | - Elena E Nikonova
- Department of Physics, M.V. Lomonosov Moscow State University, Leninskie Gory 1/2, Moscow, Russia, 119991
| | - Fedor I Kuzminov
- Department of Physics, M.V. Lomonosov Moscow State University, Leninskie Gory 1/2, Moscow, Russia, 119991
- Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ, 08901, USA
| | - Nikolai N Sluchanko
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, Russia, 119071
- Department of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1/12, Moscow, Russia, 119991
| | - Irina V Elanskaya
- Department of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1/12, Moscow, Russia, 119991
| | - Maxim Y Gorbunov
- Department of Marine and Coastal Sciences, Rutgers University, New Brunswick, NJ, 08901, USA
| | - Victor V Fadeev
- Department of Physics, M.V. Lomonosov Moscow State University, Leninskie Gory 1/2, Moscow, Russia, 119991
| | - Thomas Friedrich
- Institute of Chemistry PC 14, Technical University of Berlin, Straße des 17. Juni 135, 10623, Berlin, Germany
| | - Eugene G Maksimov
- Department of Biology, M.V. Lomonosov Moscow State University, Leninskie Gory 1/12, Moscow, Russia, 119991
| |
Collapse
|
8
|
Nganou C, Lackner G, Teschome B, Deen MJ, Adir N, Pouhe D, Lupascu DC, Mkandawire M. Energy Transfer Kinetics in Photosynthesis as an Inspiration for Improving Organic Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:19030-19039. [PMID: 28497947 DOI: 10.1021/acsami.7b04028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Clues to designing highly efficient organic solar cells may lie in understanding the architecture of light-harvesting systems and exciton energy transfer (EET) processes in very efficient photosynthetic organisms. Here, we compare the kinetics of excitation energy tunnelling from the intact phycobilisome (PBS) light-harvesting antenna system to the reaction center in photosystem II in intact cells of the cyanobacterium Acaryochloris marina with the charge transfer after conversion of photons into photocurrent in vertically aligned carbon nanotube (va-CNT) organic solar cells with poly(3-hexyl)thiophene (P3HT) as the pigment. We find that the kinetics in electron hole creation following excitation at 600 nm in both PBS and va-CNT solar cells to be 450 and 500 fs, respectively. The EET process has a 3 and 14 ps pathway in the PBS, while in va-CNT solar cell devices, the charge trapping in the CNT takes 11 and 258 ps. We show that the main hindrance to efficiency of va-CNT organic solar cells is the slow migration of the charges after exciton formation.
Collapse
Affiliation(s)
- Collins Nganou
- Verschuren Centre for Sustainability in Energy and the Environment, Cape Breton University , 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada
| | - Gerhard Lackner
- Institute for Materials Science, University of Duisburg-Essen and Centre for Nanointegration Duisburg-Essen (CeNIDE) , Essen 45141, Germany
| | - Bezu Teschome
- Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf , 01328 Dresden, Germany
| | - M Jamal Deen
- Electrical and Computer Engineering, McMaster University , 1280 Main Street, West Hamilton, Ontario L8S 4K1, Canada
| | - Noam Adir
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology , Haifa, 32000 Israel
| | - David Pouhe
- Reutlingen University of Applied Sciences , Alteburgstrase 150, 72762 Reutlingen, Germany
| | - Doru C Lupascu
- Institute for Materials Science, University of Duisburg-Essen and Centre for Nanointegration Duisburg-Essen (CeNIDE) , Essen 45141, Germany
| | - Martin Mkandawire
- Verschuren Centre for Sustainability in Energy and the Environment, Cape Breton University , 1250 Grand Lake Road, Sydney, Nova Scotia B1P 6L2, Canada
| |
Collapse
|
9
|
Bao H, Melnicki MR, Kerfeld CA. Structure and functions of Orange Carotenoid Protein homologs in cyanobacteria. CURRENT OPINION IN PLANT BIOLOGY 2017; 37:1-9. [PMID: 28391046 DOI: 10.1016/j.pbi.2017.03.010] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 03/16/2017] [Accepted: 03/21/2017] [Indexed: 06/07/2023]
Abstract
Rapidly-induced photoprotection in cyanobacteria involves thermal dissipation of excess energy absorbed by the phycobilisome (PBS), the primary light-harvesting antenna. This process is called non-photochemical quenching (NPQ), and is mediated by a water-soluble photoactive protein, the Orange Carotenoid Protein (OCP). The OCP is structurally and functionally modular, consisting of a sensor domain, an effector domain, and a carotenoid. Blue-green light induces a structural transition of the OCP from the orange inactive form, OCPo, to the red active form, OCPR. Translocation of the carotenoid into the effector domain accompanies photoactivation. The OCPR binds to the PBS core, where it triggers dissipation of excitation energy and quenches fluorescence. To recover the antenna capacity under low light conditions, the Fluorescence Recovery Protein (FRP) participates in detaching the OCP from the PBS and accelerates back-conversion of OCPR to OCPo. Increased sequencing of cyanobacterial genomes has allowed the identification of new paralogous families of the OCP and its domain homologs, the Helical Carotenoid Proteins (HCPs), which have been found distributed widely among taxonomically and ecophysiologically diverse cyanobacteria. Distinct functions from the canonical OCP have been revealed for some of these paralogs by recent structural and functional studies.
Collapse
Affiliation(s)
- Han Bao
- MSU-DOE Plant Research Laboratory, 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
| | - 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; Department of Plant and Microbial Biology, University of California, Berkeley, CA 94720, USA.
| |
Collapse
|
10
|
Dagnino-Leone J, Figueroa M, Mella C, Vorphal MA, Kerff F, Vásquez AJ, Bunster M, Martínez-Oyanedel J. Structural models of the different trimers present in the core of phycobilisomes from Gracilaria chilensis based on crystal structures and sequences. PLoS One 2017; 12:e0177540. [PMID: 28542288 PMCID: PMC5436742 DOI: 10.1371/journal.pone.0177540] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 04/28/2017] [Indexed: 11/25/2022] Open
Abstract
Phycobilisomes (PBS) are accessory light harvesting protein complexes that directionally transfer energy towards photosystems. Phycobilisomes are organized in a central core and rods radiating from it. Components of phycobilisomes in Gracilaria chilensis (Gch) are Phycobiliproteins (PBPs), Phycoerythrin (PE), and Phycocyanin (PC) in the rods, while Allophycocyanin (APC) is found in the core, and linker proteins (L). The function of such complexes depends on the structure of each component and their interaction. The core of PBS from cyanobacteria is mainly composed by cylinders of trimers of α and β subunits forming heterodimers of Allophycocyanin, and other components of the core including subunits αII and β18. As for the linkers, Linker core (LC) and Linker core membrane (LCM) are essential for the final emission towards photoreaction centers. Since we have previously focused our studies on the rods of the PBS, in the present article we investigated the components of the core in the phycobilisome from the eukaryotic algae, Gracilaria chilensis and their organization into trimers. Transmission electron microscopy provided the information for a three cylinders core, while the three dimensional structure of Allophycocyanin purified from Gch was determined by X-ray diffraction method and the biological unit was determined as a trimer by size exclusion chromatography. The protein sequences of all the components of the core were obtained by sequencing the corresponding genes and their expression confirmed by transcriptomic analysis. These subunits have seldom been reported in red algae, but not in Gracilaria chilensis. The subunits not present in the crystallographic structure were modeled to build the different composition of trimers. This article proposes structural models for the different types of trimers present in the core of phycobilisomes of Gch as a first step towards the final model for energy transfer in this system.
Collapse
Affiliation(s)
- Jorge Dagnino-Leone
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Maximiliano Figueroa
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Claudia Mella
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - María Alejandra Vorphal
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Frédéric Kerff
- Centre d'Ingéniérie des Protéines, Université de Liège, Liège, Belgium
| | - Aleikar José Vásquez
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Marta Bunster
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - José Martínez-Oyanedel
- Departamento de Bioquímica y Biología Molecular, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| |
Collapse
|
11
|
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: 61] [Impact Index Per Article: 7.6] [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.
Collapse
|
12
|
Nganou C, David L, Adir N, Mkandawire M. Linker proteins enable ultrafast excitation energy transfer in the phycobilisome antenna system of Thermosynechococcus vulcanus. Photochem Photobiol Sci 2016; 15:31-44. [DOI: 10.1039/c5pp00285k] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Comparison of kinetics of photoexcitation migration from PC620 to APC Core in extracted and intact pentacyclic phycobilisomes ofT. vulcanus. The extracted PBS does not have linker protein, while intact has them and they facilitate the migration.
Collapse
Affiliation(s)
- C. Nganou
- Verschuren Centre for Sustainability in Energy and the Environment
- Cape Breton University
- Sydney
- Canada
- Department of Chemistry
| | - L. David
- Schulich Faculty of Chemistry
- Technion-Israel Institute of Technology
- Haifa
- Israel
| | - N. Adir
- Schulich Faculty of Chemistry
- Technion-Israel Institute of Technology
- Haifa
- Israel
| | - M. Mkandawire
- Verschuren Centre for Sustainability in Energy and the Environment
- Cape Breton University
- Sydney
- Canada
| |
Collapse
|
13
|
Maksimov EG, Klementiev KE, Shirshin EA, Tsoraev GV, Elanskaya IV, Paschenko VZ. Features of temporal behavior of fluorescence recovery in Synechocystis sp. PCC6803. PHOTOSYNTHESIS RESEARCH 2015; 125:167-178. [PMID: 25800518 DOI: 10.1007/s11120-015-0124-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2014] [Accepted: 03/18/2015] [Indexed: 06/04/2023]
Abstract
Under high photon flux density of solar radiation, the photosynthetic apparatus can be damaged. To prevent this photodestruction, cyanobacteria developed special mechanisms of non-photochemical quenching (NPQ) of excitation energy in phycobilisomes. In Synechocystis, NPQ is triggered by the orange carotenoid protein (OCP), which is sensitive to blue-green illumination allowing it to bind to the phycobilisome reducing the flow of energy to the photosystems. Consequent decoupling of OCP and recovery of phycobilisome fluorescence in vivo is controlled by the so called fluorescence recovery protein (FRP). In this work, the role of the phycobilisome core components, apcD and apcF, in non-photochemical quenching and subsequent fluorescence recovery in the phycobilisomes of the cyanobacterium Synechocystis sp. PCC6803 has been investigated. Using a single photon counting technique, we have registered fluorescence decay spectra with picosecond time resolution during fluorescence recovery. In order to estimate the activation energy for the photocycle, spectroscopic studies in dependency on the temperature from 5 to 45 °C have been performed. It was found that fluorescence quenching and recovery were strongly temperature dependent for all strains exhibiting characteristic non-linear time courses. The rise of the fluorescence intensity during fluorescence recovery after NPQ can be completely described by the increase of the phycobilisome core fluorescence lifetime. It was shown that fluorescence recovery of apcD- and apcF-deficient mutants is characterized by a significantly lower activation energy barrier compared to wild type. This phenomenon indicates that apcD and apcF gene products may be required for proper interaction of FRP and OCP coupled to the phycobilisome core. In addition, we found that the rate of fluorescence recovery decreases with an increase of the non-photochemical quenching amplitude, probably due to depletion of substrate for the enzymatic reaction catalyzed by FRP.
Collapse
Affiliation(s)
- E G Maksimov
- Department of Biophysics, Faculty of Biology, M.V. Lomonosov Moscow State University, 119992, Moscow, Russia,
| | | | | | | | | | | |
Collapse
|