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Database: UniProt
Entry: Q06J47
LinkDB: Q06J47
Original site: Q06J47 
ID   PSAC_BIGNA              Reviewed;          93 AA.
AC   Q06J47;
DT   26-JUN-2007, integrated into UniProtKB/Swiss-Prot.
DT   31-OCT-2006, sequence version 1.
DT   05-DEC-2018, entry version 54.
DE   RecName: Full=Photosystem I iron-sulfur center {ECO:0000255|HAMAP-Rule:MF_01303};
DE            EC=1.97.1.12 {ECO:0000255|HAMAP-Rule:MF_01303};
DE   AltName: Full=9 kDa polypeptide {ECO:0000255|HAMAP-Rule:MF_01303};
DE   AltName: Full=PSI-C {ECO:0000255|HAMAP-Rule:MF_01303};
DE   AltName: Full=Photosystem I subunit VII {ECO:0000255|HAMAP-Rule:MF_01303};
DE   AltName: Full=PsaC {ECO:0000255|HAMAP-Rule:MF_01303};
GN   Name=psaC {ECO:0000255|HAMAP-Rule:MF_01303};
OS   Bigelowiella natans (Pedinomonas minutissima) (Chlorarachnion sp.
OS   (strain CCMP621)).
OG   Plastid; Chloroplast.
OC   Eukaryota; Rhizaria; Cercozoa; Chlorarachniophyceae; Bigelowiella.
OX   NCBI_TaxID=227086;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX   PubMed=16990439; DOI=10.1093/molbev/msl129;
RA   Rogers M.B., Gilson P.R., Su V., McFadden G.I., Keeling P.J.;
RT   "The complete chloroplast genome of the chlorarachniophyte
RT   Bigelowiella natans: evidence for independent origins of
RT   chlorarachniophyte and euglenid secondary endosymbionts.";
RL   Mol. Biol. Evol. 24:54-62(2007).
CC   -!- FUNCTION: Apoprotein for the two 4Fe-4S centers FA and FB of
CC       photosystem I (PSI); essential for photochemical activity. FB is
CC       the terminal electron acceptor of PSI, donating electrons to
CC       ferredoxin. The C-terminus interacts with PsaA/B/D and helps
CC       assemble the protein into the PSI complex. Required for binding of
CC       PsaD and PsaE to PSI. PSI is a plastocyanin-ferredoxin
CC       oxidoreductase, converting photonic excitation into a charge
CC       separation, which transfers an electron from the donor P700
CC       chlorophyll pair to the spectroscopically characterized acceptors
CC       A0, A1, FX, FA and FB in turn.
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:0000255|HAMAP-Rule:MF_01303};
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01303};
CC       Note=Binds 2 [4Fe-4S] clusters. Cluster 2 is most probably the
CC       spectroscopically characterized electron acceptor FA and cluster 1
CC       is most probably FB. {ECO:0000255|HAMAP-Rule:MF_01303};
CC   -!- SUBUNIT: The eukaryotic PSI reaction center is composed of at
CC       least 11 subunits. {ECO:0000255|HAMAP-Rule:MF_01303}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_01303}; Peripheral membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_01303}; Stromal side
CC       {ECO:0000255|HAMAP-Rule:MF_01303}.
DR   EMBL; DQ851108; ABG91412.1; -; Genomic_DNA.
DR   RefSeq; YP_778580.1; NC_008408.1.
DR   ProteinModelPortal; Q06J47; -.
DR   SMR; Q06J47; -.
DR   PRIDE; Q06J47; -.
DR   GeneID; 4352997; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
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:0009055; F:electron transfer activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0009773; P:photosynthetic electron transport in photosystem I; IEA:InterPro.
DR   HAMAP; MF_01303; PSI_PsaC; 1.
DR   InterPro; IPR017896; 4Fe4S_Fe-S-bd.
DR   InterPro; IPR017900; 4Fe4S_Fe_S_CS.
DR   InterPro; IPR017491; PSI_PsaC.
DR   Pfam; PF12838; Fer4_7; 1.
DR   TIGRFAMs; TIGR03048; PS_I_psaC; 1.
DR   PROSITE; PS00198; 4FE4S_FER_1; 2.
DR   PROSITE; PS51379; 4FE4S_FER_2; 2.
PE   3: Inferred from homology;
KW   4Fe-4S; Chloroplast; Electron transport; Iron; Iron-sulfur; Membrane;
KW   Metal-binding; Oxidoreductase; Photosynthesis; Photosystem I; Plastid;
KW   Repeat; Thylakoid; Transport.
FT   CHAIN         1     93       Photosystem I iron-sulfur center.
FT                                /FTId=PRO_0000292131.
FT   DOMAIN       13     43       4Fe-4S ferredoxin-type 1.
FT                                {ECO:0000255|HAMAP-Rule:MF_01303}.
FT   DOMAIN       50     80       4Fe-4S ferredoxin-type 2.
FT                                {ECO:0000255|HAMAP-Rule:MF_01303}.
FT   METAL        23     23       Iron-sulfur 1 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_01303}.
FT   METAL        26     26       Iron-sulfur 1 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_01303}.
FT   METAL        29     29       Iron-sulfur 1 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_01303}.
FT   METAL        33     33       Iron-sulfur 2 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_01303}.
FT   METAL        60     60       Iron-sulfur 2 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_01303}.
FT   METAL        63     63       Iron-sulfur 2 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_01303}.
FT   METAL        66     66       Iron-sulfur 2 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_01303}.
FT   METAL        70     70       Iron-sulfur 1 (4Fe-4S).
FT                                {ECO:0000255|HAMAP-Rule:MF_01303}.
SQ   SEQUENCE   93 AA;  10380 MW;  9A775E6B513572B2 CRC64;
     MKFELLNQVN LKKDHEIRIY STCIGCTQCV RACPTDVLEM VPSTTCKAKQ VVTVPRIEDC
     VGCKRCESAC PTDFLSIRVY LGGETLRSMG LAY
//
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