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5zji
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==Structure of photosystem I supercomplex with light-harvesting complexes I and II== | |
| + | <StructureSection load='5zji' size='340' side='right' caption='[[5zji]], [[Resolution|resolution]] 3.30Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[5zji]] is a 21 chain structure with sequence from [http://en.wikipedia.org/wiki/Zea_mays Zea mays] and [http://en.wikipedia.org/wiki/Zea_mays_subsp._mays Zea mays subsp. mays]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5ZJI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5ZJI FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BCR:BETA-CAROTENE'>BCR</scene>, <scene name='pdbligand=CHL:CHLOROPHYLL+B'>CHL</scene>, <scene name='pdbligand=CL0:CHLOROPHYLL+A+ISOMER'>CL0</scene>, <scene name='pdbligand=CLA:CHLOROPHYLL+A'>CLA</scene>, <scene name='pdbligand=DGD:DIGALACTOSYL+DIACYL+GLYCEROL+(DGDG)'>DGD</scene>, <scene name='pdbligand=LHG:1,2-DIPALMITOYL-PHOSPHATIDYL-GLYCEROLE'>LHG</scene>, <scene name='pdbligand=LMG:1,2-DISTEAROYL-MONOGALACTOSYL-DIGLYCERIDE'>LMG</scene>, <scene name='pdbligand=LMU:DODECYL-ALPHA-D-MALTOSIDE'>LMU</scene>, <scene name='pdbligand=LUT:(3R,3R,6S)-4,5-DIDEHYDRO-5,6-DIHYDRO-BETA,BETA-CAROTENE-3,3-DIOL'>LUT</scene>, <scene name='pdbligand=NEX:(1R,3R)-6-{(3E,5E,7E,9E,11E,13E,15E,17E)-18-[(1S,4R,6R)-4-HYDROXY-2,2,6-TRIMETHYL-7-OXABICYCLO[4.1.0]HEPT-1-YL]-3,7,12,16-TETRAMETHYLOCTADECA-1,3,5,7,9,11,13,15,17-NONAENYLIDENE}-1,5,5-TRIMETHYLCYCLOHEXANE-1,3-DIOL'>NEX</scene>, <scene name='pdbligand=PQN:PHYLLOQUINONE'>PQN</scene>, <scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene>, <scene name='pdbligand=XAT:(3S,5R,6S,3S,5R,6S)-5,6,5,6-DIEPOXY-5,6,5,6-+TETRAHYDRO-BETA,BETA-CAROTENE-3,3-DIOL'>XAT</scene></td></tr> | ||
| + | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=TPO:PHOSPHOTHREONINE'>TPO</scene></td></tr> | ||
| + | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Photosystem_I Photosystem I], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=1.97.1.12 1.97.1.12] </span></td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5zji FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5zji OCA], [http://pdbe.org/5zji PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5zji RCSB], [http://www.ebi.ac.uk/pdbsum/5zji PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5zji ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [[http://www.uniprot.org/uniprot/B6T892_MAIZE B6T892_MAIZE]] The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated.[RuleBase:RU363080] [[http://www.uniprot.org/uniprot/B6SSN3_MAIZE B6SSN3_MAIZE]] The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated.[RuleBase:RU363080] [[http://www.uniprot.org/uniprot/PSAI_MAIZE PSAI_MAIZE]] May help in the organization of the PsaL subunit. [[http://www.uniprot.org/uniprot/A0A059Q6U2_MAIZE A0A059Q6U2_MAIZE]] PsaA and PsaB bind P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1 and FX. PSI is a plastocyanin-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn. Oxidized P700 is reduced on the lumenal side of the thylakoid membrane by plastocyanin.[HAMAP-Rule:MF_00482] [[http://www.uniprot.org/uniprot/B6SUC4_MAIZE B6SUC4_MAIZE]] The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated.[RuleBase:RU363080] [[http://www.uniprot.org/uniprot/PSAH_MAIZE PSAH_MAIZE]] Possible role could be the docking of the LHC I antenna complex to the core complex. [[http://www.uniprot.org/uniprot/B6T1H1_MAIZE B6T1H1_MAIZE]] The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated.[RuleBase:RU363080] [[http://www.uniprot.org/uniprot/PSAJ_MAIZE PSAJ_MAIZE]] May help in the organization of the PsaE and PsaF subunits. [[http://www.uniprot.org/uniprot/B6SZR1_MAIZE B6SZR1_MAIZE]] The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated.[RuleBase:RU363080] [[http://www.uniprot.org/uniprot/CB21_MAIZE CB21_MAIZE]] The light-harvesting complex (LHC) functions as a light receptor, it captures and delivers excitation energy to photosystems with which it is closely associated. [[http://www.uniprot.org/uniprot/PSAA_MAIZE PSAA_MAIZE]] PsaA and PsaB bind P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1 and FX. PSI is a plastocyanin-ferredoxin oxidoreductase, converting photonic excitation into a charge separation, which transfers an electron from the donor P700 chlorophyll pair to the spectroscopically characterized acceptors A0, A1, FX, FA and FB in turn. Oxidized P700 is reduced on the lumenal side of the thylakoid membrane by plastocyanin. | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Plants regulate photosynthetic light harvesting to maintain balanced energy flux into photosystems I and II (PSI and PSII). Under light conditions favoring PSII excitation, the PSII antenna, light-harvesting complex II (LHCII), is phosphorylated and forms a supercomplex with PSI core and the PSI antenna, light-harvesting complex I (LHCI). Both LHCI and LHCII then transfer excitation energy to the PSI core. We report the structure of maize PSI-LHCI-LHCII solved by cryo-electron microscopy, revealing the recognition site between LHCII and PSI. The PSI subunits PsaN and PsaO are observed at the PSI-LHCI interface and the PSI-LHCII interface, respectively. Each subunit relays excitation to PSI core through a pair of chlorophyll molecules, thus revealing previously unseen paths for energy transfer between the antennas and the PSI core. | ||
| - | + | Structure of the maize photosystem I supercomplex with light-harvesting complexes I and II.,Pan X, Ma J, Su X, Cao P, Chang W, Liu Z, Zhang X, Li M Science. 2018 Jun 8;360(6393):1109-1113. doi: 10.1126/science.aat1156. PMID:29880686<ref>PMID:29880686</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| - | [[Category: | + | </div> |
| + | <div class="pdbe-citations 5zji" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Photosystem I]] | ||
| + | [[Category: Zea mays]] | ||
| + | [[Category: Zea mays subsp. mays]] | ||
| + | [[Category: Cao, P]] | ||
| + | [[Category: Li, M]] | ||
| + | [[Category: Liu, Z F]] | ||
| + | [[Category: Ma, J]] | ||
| + | [[Category: Pan, X W]] | ||
| + | [[Category: Su, X D]] | ||
| + | [[Category: Zhang, X Z]] | ||
| + | [[Category: Antenna]] | ||
| + | [[Category: Membrane protein]] | ||
| + | [[Category: Photosystem]] | ||
| + | [[Category: State transition]] | ||
| + | [[Category: Supercomplex]] | ||
Revision as of 05:45, 20 June 2018
Structure of photosystem I supercomplex with light-harvesting complexes I and II
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Categories: Photosystem I | Zea mays | Zea mays subsp. mays | Cao, P | Li, M | Liu, Z F | Ma, J | Pan, X W | Su, X D | Zhang, X Z | Antenna | Membrane protein | Photosystem | State transition | Supercomplex
