ID   PSAE_MICDP              Reviewed;          66 AA.
AC   P23809;
DT   01-NOV-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-NOV-1991, sequence version 1.
DT   25-MAY-2022, entry version 77.
DE   RecName: Full=Photosystem I reaction center subunit IV;
GN   Name=psaE;
OS   Microchaete diplosiphon (Fremyella diplosiphon).
OC   Bacteria; Cyanobacteria; Nostocales; Rivulariaceae; Microchaete.
OX   NCBI_TaxID=1197;
RN   [1]
RP   PROTEIN SEQUENCE.
RC   STRAIN=UTEX 590 / SAG B 1429-1b;
RX   PubMed=1930733; DOI=10.1515/bchm3.1991.372.2.519;
RA   Mann K., Schlenkrich T., Bauer M., Huber R.;
RT   "The amino-acid sequence of three proteins of photosystem I of the
RT   cyanobacterium Fremyella diplosiphon (Calothrix sp PCC 7601).";
RL   Biol. Chem. Hoppe-Seyler 372:519-524(1991).
CC   -!- FUNCTION: Stabilizes the interaction between PsaC and the PSI core,
CC       assists the docking of the ferredoxin to PSI and interacts with
CC       ferredoxin-NADP oxidoreductase. {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250};
CC       Peripheral membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the PsaE family. {ECO:0000305}.
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DR   AlphaFoldDB; P23809; -.
DR   SMR; P23809; -.
DR   GO; GO:0009538; C:photosystem I reaction center; IEA:InterPro.
DR   GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR   HAMAP; MF_00613; PSI_PsaE; 1.
DR   InterPro; IPR008990; Elect_transpt_acc-like_dom_sf.
DR   InterPro; IPR003375; PSI_PsaE.
DR   PANTHER; PTHR34549; PTHR34549; 1.
DR   Pfam; PF02427; PSI_PsaE; 1.
DR   SUPFAM; SSF50090; SSF50090; 1.
PE   1: Evidence at protein level;
KW   Direct protein sequencing; Membrane; Photosynthesis; Photosystem I;
KW   Thylakoid.
FT   CHAIN           1..66
FT                   /note="Photosystem I reaction center subunit IV"
FT                   /id="PRO_0000204401"
SQ   SEQUENCE   66 AA;  7388 MW;  59EC8E315A7726D1 CRC64;
     VQRGSKVRIL RPESYWFQDV GTVASIDQSG IKYSVIVRFD KVNYSGINTN NFAEDELLEV
     APPAAK