ID   A0A088CJW0_9CHLO        Unreviewed;       751 AA.
AC   A0A088CJW0;
DT   26-NOV-2014, integrated into UniProtKB/TrEMBL.
DT   26-NOV-2014, sequence version 1.
DT   08-MAY-2019, entry version 18.
DE   RecName: Full=Photosystem I P700 chlorophyll a apoprotein A1 {ECO:0000256|HAMAP-Rule:MF_00458};
DE            EC=1.97.1.12 {ECO:0000256|HAMAP-Rule:MF_00458};
DE   AltName: Full=PSI-A {ECO:0000256|HAMAP-Rule:MF_00458};
DE   AltName: Full=PsaA {ECO:0000256|HAMAP-Rule:MF_00458};
GN   Name=psaA {ECO:0000256|HAMAP-Rule:MF_00458,
GN   ECO:0000313|EMBL:AID67522.1};
OS   Prasinoderma coloniale.
OG   Plastid; Chloroplast {ECO:0000313|EMBL:AID67522.1}.
OC   Eukaryota; Viridiplantae; Chlorophyta; Palmophyllophyceae;
OC   Prasinococcales; Prasinococcaceae; Prasinoderma.
OX   NCBI_TaxID=156133 {ECO:0000313|EMBL:AID67522.1};
RN   [1] {ECO:0000313|EMBL:AID67522.1}
RP   NUCLEOTIDE SEQUENCE.
RX   PubMed=25281016; DOI=10.1186/1471-2164-15-857;
RA   Lemieux C., Otis C., Turmel M.;
RT   "Six newly sequenced chloroplast genomes from prasinophyte green algae
RT   provide insights into the relationships among prasinophyte lineages
RT   and the diversity of streamlined genome architecture in picoplanktonic
RT   species.";
RL   BMC Genomics 15:857-857(2014).
CC   -!- FUNCTION: PsaA and PsaB bind P700, the primary electron donor of
CC       photosystem I (PSI), as well as the electron acceptors A0, A1 and
CC       FX. PSI is a plastocyanin/cytochrome c6-ferredoxin oxidoreductase,
CC       converting photonic excitation into a charge separation, which
CC       transfers an electron from the donor P700 chlorophyll pair to the
CC       spectroscopically characterized acceptors A0, A1, FX, FA and FB in
CC       turn. Oxidized P700 is reduced on the lumenal side of the
CC       thylakoid membrane by plastocyanin or cytochrome c6.
CC       {ECO:0000256|HAMAP-Rule:MF_00458}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=hnu + oxidized [2Fe-2S]-[ferredoxin] + reduced
CC         [plastocyanin] = oxidized [plastocyanin] + reduced [2Fe-2S]-
CC         [ferredoxin]; Xref=Rhea:RHEA:30407, Rhea:RHEA-COMP:10000,
CC         Rhea:RHEA-COMP:10001, Rhea:RHEA-COMP:10039, Rhea:RHEA-
CC         COMP:10040, ChEBI:CHEBI:29036, ChEBI:CHEBI:30212,
CC         ChEBI:CHEBI:33737, ChEBI:CHEBI:33738, ChEBI:CHEBI:49552;
CC         EC=1.97.1.12; Evidence={ECO:0000256|HAMAP-Rule:MF_00458};
CC   -!- COFACTOR:
CC       Note=P700 is a chlorophyll a/chlorophyll a' dimer, A0 is one or
CC       more chlorophyll a, A1 is one or both phylloquinones and FX is a
CC       shared 4Fe-4S iron-sulfur center. {ECO:0000256|HAMAP-
CC       Rule:MF_00458};
CC   -!- SUBUNIT: The PsaA/B heterodimer binds the P700 chlorophyll special
CC       pair and subsequent electron acceptors. PSI consists of a core
CC       antenna complex that captures photons, and an electron transfer
CC       chain that converts photonic excitation into a charge separation.
CC       The eukaryotic PSI reaction center is composed of at least 11
CC       subunits. {ECO:0000256|HAMAP-Rule:MF_00458}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000256|HAMAP-Rule:MF_00458}; Multi-pass membrane protein
CC       {ECO:0000256|HAMAP-Rule:MF_00458}.
CC   -!- SIMILARITY: Belongs to the PsaA/PsaB family. {ECO:0000256|HAMAP-
CC       Rule:MF_00458}.
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DR   EMBL; KJ746598; AID67522.1; -; Genomic_DNA.
DR   RefSeq; YP_009057464.1; NC_024817.1.
DR   GeneID; 20357977; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009522; C:photosystem I; IEA:UniProtKB-KW.
DR   GO; GO:0051539; F:4 iron, 4 sulfur cluster binding; IEA:UniProtKB-KW.
DR   GO; GO:0016168; F:chlorophyll binding; IEA:UniProtKB-KW.
DR   GO; GO:0009055; F:electron transfer activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR   GO; GO:0018298; P:protein-chromophore linkage; IEA:UniProtKB-KW.
DR   Gene3D; 1.20.1130.10; -; 1.
DR   HAMAP; MF_00458; PSI_PsaA; 1.
DR   InterPro; IPR006243; PSI_PsaA.
DR   InterPro; IPR001280; PSI_PsaA/B.
DR   InterPro; IPR020586; PSI_PsaA/B_CS.
DR   InterPro; IPR036408; PSI_PsaA/B_sf.
DR   PANTHER; PTHR30128:SF43; PTHR30128:SF43; 1.
DR   Pfam; PF00223; PsaA_PsaB; 1.
DR   PIRSF; PIRSF002905; PSI_A; 1.
DR   PRINTS; PR00257; PHOTSYSPSAAB.
DR   SUPFAM; SSF81558; SSF81558; 1.
DR   TIGRFAMs; TIGR01335; psaA; 1.
DR   PROSITE; PS00419; PHOTOSYSTEM_I_PSAAB; 1.
PE   3: Inferred from homology;
KW   4Fe-4S {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Chlorophyll {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Chloroplast {ECO:0000313|EMBL:AID67522.1};
KW   Chromophore {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Electron transport {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Iron {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Iron-sulfur {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Magnesium {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Membrane {ECO:0000256|HAMAP-Rule:MF_00458, ECO:0000256|SAM:Phobius};
KW   Metal-binding {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Oxidoreductase {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Photosynthesis {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Photosystem I {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Plastid {ECO:0000313|EMBL:AID67522.1};
KW   Thylakoid {ECO:0000256|HAMAP-Rule:MF_00458};
KW   Transmembrane {ECO:0000256|HAMAP-Rule:MF_00458,
KW   ECO:0000256|SAM:Phobius};
KW   Transmembrane helix {ECO:0000256|HAMAP-Rule:MF_00458,
KW   ECO:0000256|SAM:Phobius};
KW   Transport {ECO:0000256|HAMAP-Rule:MF_00458}.
FT   TRANSMEM     73     93       Helical. {ECO:0000256|SAM:Phobius}.
FT   TRANSMEM    159    181       Helical. {ECO:0000256|SAM:Phobius}.
FT   TRANSMEM    294    312       Helical. {ECO:0000256|SAM:Phobius}.
FT   TRANSMEM    353    373       Helical. {ECO:0000256|SAM:Phobius}.
FT   TRANSMEM    393    415       Helical. {ECO:0000256|SAM:Phobius}.
FT   TRANSMEM    436    457       Helical. {ECO:0000256|SAM:Phobius}.
FT   TRANSMEM    533    551       Helical. {ECO:0000256|SAM:Phobius}.
FT   TRANSMEM    665    687       Helical. {ECO:0000256|SAM:Phobius}.
FT   METAL       575    575       Iron-sulfur (4Fe-4S); shared with dimeric
FT                                partner. {ECO:0000256|HAMAP-Rule:
FT                                MF_00458}.
FT   METAL       584    584       Iron-sulfur (4Fe-4S); shared with dimeric
FT                                partner. {ECO:0000256|HAMAP-Rule:
FT                                MF_00458}.
FT   METAL       676    676       Magnesium (chlorophyll-a' A1 axial
FT                                ligand; P700 special pair).
FT                                {ECO:0000256|HAMAP-Rule:MF_00458}.
FT   METAL       684    684       Magnesium (chlorophyll-a A3 axial
FT                                ligand). {ECO:0000256|HAMAP-Rule:
FT                                MF_00458}.
FT   BINDING     692    692       Chlorophyll-a A3. {ECO:0000256|HAMAP-
FT                                Rule:MF_00458}.
FT   BINDING     693    693       Phylloquinone A. {ECO:0000256|HAMAP-Rule:
FT                                MF_00458}.
SQ   SEQUENCE   751 AA;  83389 MW;  EB0E2C5852646CD6 CRC64;
     MTIRPPKHEA KKIKILVDTN TVSTSFEKWA KPGHFSRTLA KGPTTTTWVW NLHADAHDFD
     SHTTDLEDIS RKVFSAHFGQ LGIILIWLSG MYFHGARFSN YEAWLTDPTN IKPSAQVVWP
     IVGQEILNGD VGGGFQGIQI TSGFFQLWRA SGITTELELY STAIGGLVLA GLMFFAGWFH
     YHKAAPKLEW FQSVESMMNH HLAGLLGLGS LAWAGHQIHV ALPINLLLDA GIDPKEIPLP
     HEFLLDRQLM AQLYPSFAQG LTPFFTMHWA AYGDFLTFKG GLNPVTGALW LTDIAHHHLA
     VAVLFIIAGH MYRTNWGIGH SFKEILEAHR GPFTGNGHKG LYEILTTSWH AQLAINLALF
     GSLSIIVAHH MYAMPAYPYI AVDYGTQLSL FTHHTWIGGF CICGAAAHGA IFMVRDYDPL
     NNYNNVLDRV IRHRDAIISH LNWVCIFLGF HSFGLYIHND TMSALGRPQD MFSDTALQLQ
     PVFAQWVQQT HMSAPDLTAP NALLGTSPAW GGDTIAINGK VAMMPVPLGT ADFMVHHIHA
     FTIHVTVLIL LKGVLFARSS RLIPDKANLG FRFPCDGPGR GGTCQVSGWD HVFLGLFWMY
     NCISVDIFYF SWKMQSDVWG TVTDQGISHI TGGNFALTAN TINGWLRDFL WAQSSQVLQA
     YGSALSAYSL TFLAAHFIWA FSLMFLFSGR GYWQELIESI VWAHNKLRVA PAIQPRALSI
     TQGRAVGVAH YLLGGICTTW AFFLARICAV G
//