ID   PSAE_MASLA              Reviewed;          71 AA.
AC   Q9ZFU3;
DT   10-JAN-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-1999, sequence version 1.
DT   25-MAY-2022, entry version 67.
DE   RecName: Full=Photosystem I reaction center subunit IV;
GN   Name=psaE;
OS   Mastigocladus laminosus (Fischerella sp.).
OC   Bacteria; Cyanobacteria; Nostocales; Hapalosiphonaceae; Mastigocladus.
OX   NCBI_TaxID=83541;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   He Z.-Y., Chitnis P.R., Nechushtai R.;
RT   "Molecular cloning of the psaE gene for photosystem I subunit IV from the
RT   thermophilic cyanobacterium Mastigocladus laminosus.";
RL   (er) Plant Gene Register PGR99-165(1999).
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   EMBL; AF093820; AAC83370.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q9ZFU3; -.
DR   SMR; Q9ZFU3; -.
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   3: Inferred from homology;
KW   Membrane; Photosynthesis; Photosystem I; Thylakoid.
FT   CHAIN           1..71
FT                   /note="Photosystem I reaction center subunit IV"
FT                   /id="PRO_0000204403"
SQ   SEQUENCE   71 AA;  8103 MW;  5D4A1E9C25AFD1F0 CRC64;
     MVQRGSKVRI LRPESYWFQD IGTVASIEQG GTIRYPVIVR FDKVNYAGVN TNNFAEYELV
     EVEAPKAKPK K