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PSAC_LACSA
ID   PSAC_LACSA              Reviewed;          81 AA.
AC   Q332S6;
DT   06-FEB-2007, integrated into UniProtKB/Swiss-Prot.
DT   06-DEC-2005, sequence version 1.
DT   03-AUG-2022, entry version 77.
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   Lactuca sativa (Garden lettuce).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; campanulids; Asterales; Asteraceae; Cichorioideae; Cichorieae;
OC   Lactucinae; Lactuca.
OX   NCBI_TaxID=4236;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Cisco;
RX   PubMed=16604461; DOI=10.1007/s11248-005-3997-2;
RA   Kanamoto H., Yamashita A., Asao H., Okumura S., Takase H., Hattori M.,
RA   Yokota A., Tomizawa K.;
RT   "Efficient and stable transformation of Lactuca sativa L. cv. Cisco
RT   (lettuce) plastids.";
RL   Transgenic Res. 15:205-217(2006).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. Salinas;
RA   Timme R.E., Kuehl J.V., Boore J.L., Jansen R.K.;
RT   "A comparison of the first two published chloroplast genomes in Asteraceae:
RT   Lactuca and Helianthus.";
RL   Submitted (JAN-2006) to the EMBL/GenBank/DDBJ databases.
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. {ECO:0000255|HAMAP-
CC       Rule:MF_01303}.
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; Evidence={ECO:0000255|HAMAP-
CC         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 is
CC       most probably FB. {ECO:0000255|HAMAP-Rule:MF_01303};
CC   -!- SUBUNIT: The eukaryotic PSI reaction center is composed of at least 11
CC       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 {ECO:0000255|HAMAP-
CC       Rule:MF_01303}.
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DR   EMBL; AP007232; BAE47646.1; -; Genomic_DNA.
DR   EMBL; DQ383816; ABD47287.1; -; Genomic_DNA.
DR   RefSeq; YP_398379.1; NC_007578.1.
DR   AlphaFoldDB; Q332S6; -.
DR   SMR; Q332S6; -.
DR   EnsemblPlants; rna-gnl|WGS:NBSK|LSAT_1X14180_mrna; cds-PLY82108.1; gene-LSAT_1X14180.
DR   GeneID; 3772831; -.
DR   Gramene; rna-gnl|WGS:NBSK|LSAT_1X14180_mrna; cds-PLY82108.1; gene-LSAT_1X14180.
DR   KEGG; lsv:3772831; -.
DR   OrthoDB; 1535519at2759; -.
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   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   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000250"
FT   CHAIN           2..81
FT                   /note="Photosystem I iron-sulfur center"
FT                   /id="PRO_0000275986"
FT   DOMAIN          2..31
FT                   /note="4Fe-4S ferredoxin-type 1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01303"
FT   DOMAIN          39..68
FT                   /note="4Fe-4S ferredoxin-type 2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01303"
FT   BINDING         11
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01303"
FT   BINDING         14
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01303"
FT   BINDING         17
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01303"
FT   BINDING         21
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01303"
FT   BINDING         48
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01303"
FT   BINDING         51
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01303"
FT   BINDING         54
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01303"
FT   BINDING         58
FT                   /ligand="[4Fe-4S] cluster"
FT                   /ligand_id="ChEBI:CHEBI:49883"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01303"
SQ   SEQUENCE   81 AA;  9038 MW;  68071AC57FC603BF CRC64;
     MSHSVKIYDT CIGCTQCVRA CPTDVLEMIP WDGCKAKQIA SAPRTEDCVG CKRCESACPT
     DFLSVRVYLW HETTRSMGIA Y
 
 
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