PSAC_CUCSA
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 03-AUG-2022, entry version 118.
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; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC rosids; fabids; Cucurbitales; Cucurbitaceae; 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 L. cv.
RT 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.) chloroplast
RT 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 identifies
RT differences between chilling-tolerant and -susceptible 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 complex by
RT 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 the
CC terminal electron acceptor of PSI, donating electrons to ferredoxin.
CC The C-terminus interacts with PsaA/B/D and helps assemble the protein
CC into the PSI complex. Required for binding of PsaD and PsaE to PSI. PSI
CC is a plastocyanin-ferredoxin oxidoreductase, converting photonic
CC excitation into a charge separation, which transfers an electron from
CC the donor P700 chlorophyll pair to the spectroscopically characterized
CC acceptors A0, A1, FX, FA and FB in turn.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=hnu + oxidized [2Fe-2S]-[ferredoxin] + reduced [plastocyanin]
CC = oxidized [plastocyanin] + reduced [2Fe-2S]-[ferredoxin];
CC Xref=Rhea:RHEA:30407, Rhea:RHEA-COMP:10000, Rhea:RHEA-COMP:10001,
CC Rhea:RHEA-COMP:10039, Rhea:RHEA-COMP:10040, ChEBI:CHEBI:29036,
CC ChEBI:CHEBI:30212, ChEBI:CHEBI:33737, ChEBI:CHEBI:33738,
CC ChEBI:CHEBI:49552; EC=1.97.1.12;
CC -!- COFACTOR:
CC Name=[4Fe-4S] cluster; Xref=ChEBI:CHEBI:49883; 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 is
CC most probably FB. {ECO:0000250};
CC -!- SUBUNIT: The eukaryotic PSI reaction center is composed of at least 11
CC subunits. {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC {ECO:0000250}; Peripheral membrane protein {ECO:0000250}; Stromal side
CC {ECO:0000250}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
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 AlphaFoldDB; P42046; -.
DR SMR; P42046; -.
DR STRING; 3659.XP_004174172.1; -.
DR GeneID; 3429272; -.
DR KEGG; csv:3429272; -.
DR eggNOG; ENOG502S26M; Eukaryota.
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; Iron;
KW Iron-sulfur; Membrane; Metal-binding; Oxidoreductase; Photosynthesis;
KW Photosystem I; Plastid; Repeat; Thylakoid; Transport.
FT INIT_MET 1
FT /note="Removed"
FT /evidence="ECO:0000269|PubMed:1883835"
FT CHAIN 2..81
FT /note="Photosystem I iron-sulfur center"
FT /id="PRO_0000061976"
FT DOMAIN 2..31
FT /note="4Fe-4S ferredoxin-type 1"
FT DOMAIN 39..68
FT /note="4Fe-4S ferredoxin-type 2"
FT BINDING 11
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000250"
FT BINDING 14
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000250"
FT BINDING 17
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000250"
FT BINDING 21
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 48
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 51
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 54
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="2"
FT /evidence="ECO:0000250"
FT BINDING 58
FT /ligand="[4Fe-4S] cluster"
FT /ligand_id="ChEBI:CHEBI:49883"
FT /ligand_label="1"
FT /evidence="ECO:0000250"
SQ SEQUENCE 81 AA; 8980 MW; 680556D8CB5603BF CRC64;
MSHSVKIYDT CIGCTQCVRA CPTDVLEMIP WGGCKAKQIA SAPRTEDCVG CKRCESACPT
DFLSVRVYLW HETTRSMGLA Y
