ID   PSAE_THEVL              Reviewed;          26 AA.
AC   P20900;
DT   01-FEB-1991, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1991, sequence version 1.
DT   25-MAY-2022, entry version 71.
DE   RecName: Full=Photosystem I reaction center subunit IV;
DE   AltName: Full=Photosystem I 8.1 kDa protein;
DE   AltName: Full=p30 protein;
DE   Flags: Fragment;
GN   Name=psaE;
OS   Thermostichus vulcanus (Synechococcus vulcanus).
OC   Bacteria; Cyanobacteria; Thermostichales; Thermostichaceae; Thermostichus.
OX   NCBI_TaxID=32053;
RN   [1]
RP   PROTEIN SEQUENCE.
RX   PubMed=2503399; DOI=10.1016/0014-5793(89)80971-8;
RA   Koike H., Ikeuchi M., Hiyama T., Inoue Y.;
RT   "Identification of photosystem I components from the cyanobacterium,
RT   Synechococcus vulcanus by N-terminal sequencing.";
RL   FEBS Lett. 253:257-263(1989).
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; P20900; -.
DR   SMR; P20900; -.
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-KW.
DR   InterPro; IPR008990; Elect_transpt_acc-like_dom_sf.
DR   InterPro; IPR003375; PSI_PsaE.
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..>26
FT                   /note="Photosystem I reaction center subunit IV"
FT                   /id="PRO_0000204413"
FT   NON_TER         26
SQ   SEQUENCE   26 AA;  2911 MW;  1A0915AD0153B837 CRC64;
     MVQRGSKVKI LRPESYVYNE VGTVAS