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Database: UniProt
Entry: P42046
LinkDB: P42046
Original site: P42046 
ID   PSAC_CUCSA              Reviewed;          81 AA.
AC   P42046; A5J1Y4; Q2QD40; Q4VZL7;
DT   01-NOV-1995, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   10-APR-2019, entry version 109.
DE   RecName: Full=Photosystem I iron-sulfur center;
DE            EC=1.97.1.12;
DE   AltName: Full=9 kDa polypeptide;
DE   AltName: Full=PS 1 subunit 11;
DE   AltName: Full=PSI-C;
DE   AltName: Full=Photosystem I subunit VII;
DE   AltName: Full=PsaC;
GN   Name=psaC; Synonyms=frxA; OrderedLocusNames=CsCp106;
OS   Cucumis sativus (Cucumber).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliophyta; eudicotyledons; Gunneridae;
OC   Pentapetalae; rosids; fabids; Cucurbitales; Cucurbitaceae;
OC   Benincaseae; Cucumis.
OX   NCBI_TaxID=3659;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Baekmibaekdadagi;
RX   PubMed=16362300; DOI=10.1007/s00299-005-0097-y;
RA   Kim J.-S., Jung J.D., Lee J.-A., Park H.-W., Oh K.-H., Jeong W.J.,
RA   Choi D.-W., Liu J.R., Cho K.Y.;
RT   "Complete sequence and organization of the cucumber (Cucumis sativus
RT   L. cv. Baekmibaekdadagi) chloroplast genome.";
RL   Plant Cell Rep. 25:334-340(2006).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Borszczagowski;
RX   PubMed=17607527; DOI=10.2478/s11658-007-0029-7;
RA   Plader W.W., Yukawa Y., Sugiura M., Malepszy S.;
RT   "The complete structure of the cucumber (Cucumis sativus L.)
RT   chloroplast genome: its composition and comparative analysis.";
RL   Cell. Mol. Biol. Lett. 12:584-594(2007).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Chipper, and cv. Gy14;
RX   PubMed=17546086; DOI=10.1139/G07-003;
RA   Chung S.-M., Gordon V.S., Staub J.E.;
RT   "Sequencing cucumber (Cucumis sativus L.) chloroplast genomes
RT   identifies differences between chilling-tolerant and -susceptible
RT   cucumber lines.";
RL   Genome 50:215-225(2007).
RN   [4]
RP   PROTEIN SEQUENCE OF 2-26.
RC   TISSUE=Cotyledon;
RX   PubMed=1883835; DOI=10.1016/S0005-2728(05)80198-7;
RA   Iwasaki Y., Ishikawa H., Hibino T., Takabe T.;
RT   "Characterization of genes that encode subunits of cucumber PS I
RT   complex by N-terminal sequencing.";
RL   Biochim. Biophys. Acta 1059:141-148(1991).
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;
CC   -!- COFACTOR:
CC       Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883;
CC         Evidence={ECO:0000250};
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:0000250};
CC   -!- SUBUNIT: The eukaryotic PSI reaction center is composed of at
CC       least 11 subunits. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000250}; Peripheral membrane protein {ECO:0000250}; Stromal
CC       side {ECO:0000250}.
DR   EMBL; DQ119058; AAZ94699.1; -; Genomic_DNA.
DR   EMBL; AJ970307; CAJ00810.1; -; Genomic_DNA.
DR   EMBL; DQ865975; ABI97464.1; -; Genomic_DNA.
DR   EMBL; DQ865976; ABI98795.1; -; Genomic_DNA.
DR   RefSeq; YP_247651.1; NC_007144.1.
DR   ProteinModelPortal; P42046; -.
DR   SMR; P42046; -.
DR   STRING; 3659.XP_004174172.1; -.
DR   GeneID; 3429272; -.
DR   KEGG; csv:3429272; -.
DR   KO; K02691; -.
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   TIGRFAMs; TIGR03048; PS_I_psaC; 1.
DR   PROSITE; PS00198; 4FE4S_FER_1; 2.
DR   PROSITE; PS51379; 4FE4S_FER_2; 2.
PE   1: Evidence at protein level;
KW   4Fe-4S; Chloroplast; Direct protein sequencing; Electron transport;
KW   Iron; Iron-sulfur; Membrane; Metal-binding; Oxidoreductase;
KW   Photosynthesis; Photosystem I; Plastid; Repeat; Thylakoid; Transport.
FT   INIT_MET      1      1       Removed. {ECO:0000269|PubMed:1883835}.
FT   CHAIN         2     81       Photosystem I iron-sulfur center.
FT                                /FTId=PRO_0000061976.
FT   DOMAIN        2     31       4Fe-4S ferredoxin-type 1.
FT   DOMAIN       39     68       4Fe-4S ferredoxin-type 2.
FT   METAL        11     11       Iron-sulfur 1 (4Fe-4S). {ECO:0000250}.
FT   METAL        14     14       Iron-sulfur 1 (4Fe-4S). {ECO:0000250}.
FT   METAL        17     17       Iron-sulfur 1 (4Fe-4S). {ECO:0000250}.
FT   METAL        21     21       Iron-sulfur 2 (4Fe-4S). {ECO:0000250}.
FT   METAL        48     48       Iron-sulfur 2 (4Fe-4S). {ECO:0000250}.
FT   METAL        51     51       Iron-sulfur 2 (4Fe-4S). {ECO:0000250}.
FT   METAL        54     54       Iron-sulfur 2 (4Fe-4S). {ECO:0000250}.
FT   METAL        58     58       Iron-sulfur 1 (4Fe-4S). {ECO:0000250}.
SQ   SEQUENCE   81 AA;  8980 MW;  680556D8CB5603BF CRC64;
     MSHSVKIYDT CIGCTQCVRA CPTDVLEMIP WGGCKAKQIA SAPRTEDCVG CKRCESACPT
     DFLSVRVYLW HETTRSMGLA Y
//
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