ID   PSAE_TRIV2              Reviewed;          71 AA.
AC   P31090; Q3MDP2;
DT   01-JUL-1993, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 3.
DT   25-MAY-2022, entry version 121.
DE   RecName: Full=Photosystem I reaction center subunit IV;
GN   Name=psaE; OrderedLocusNames=Ava_1270;
OS   Trichormus variabilis (strain ATCC 29413 / PCC 7937) (Anabaena variabilis).
OC   Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Trichormus.
OX   NCBI_TaxID=240292;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 29413 / PCC 7937;
RX   PubMed=25197444; DOI=10.4056/sigs.3899418;
RA   Thiel T., Pratte B.S., Zhong J., Goodwin L., Copeland A., Lucas S., Han C.,
RA   Pitluck S., Land M.L., Kyrpides N.C., Woyke T.;
RT   "Complete genome sequence of Anabaena variabilis ATCC 29413.";
RL   Stand. Genomic Sci. 9:562-573(2014).
RN   [2]
RP   PROTEIN SEQUENCE OF 2-60.
RX   PubMed=1618755; DOI=10.1016/s0021-9258(18)42303-4;
RA   Nyhus K.J., Ikeuchi M., Inoue Y., Whitmarsh J., Pakrasi H.B.;
RT   "Purification and characterization of the photosystem I complex from the
RT   filamentous cyanobacterium Anabaena variabilis ATCC 29413.";
RL   J. Biol. Chem. 267:12489-12495(1992).
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; CP000117; ABA20894.1; -; Genomic_DNA.
DR   PIR; D42799; D42799.
DR   AlphaFoldDB; P31090; -.
DR   SMR; P31090; -.
DR   STRING; 240292.Ava_1270; -.
DR   EnsemblBacteria; ABA20894; ABA20894; Ava_1270.
DR   KEGG; ava:Ava_1270; -.
DR   eggNOG; ENOG503313D; Bacteria.
DR   HOGENOM; CLU_136462_2_1_3; -.
DR   OMA; NYSGINT; -.
DR   Proteomes; UP000002533; Chromosome.
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   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000269|PubMed:1618755"
FT   CHAIN           2..71
FT                   /note="Photosystem I reaction center subunit IV"
FT                   /id="PRO_0000204400"
FT   CONFLICT        60
FT                   /note="E -> N (in Ref. 2; AA sequence)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   71 AA;  7999 MW;  8903FCF0F6686B04 CRC64;
     MVQRGSKVRI LRPESYWFQD VGTVASVDQS GIKYPVIVRF DKVNYSGINT NNFAVDELIE
     VEAPKAKPAK K