ID   PSAD_THEVL              Reviewed;         139 AA.
AC   P0A422; P20452; P20899;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   23-JAN-2007, sequence version 2.
DT   25-MAY-2022, entry version 44.
DE   RecName: Full=Photosystem I reaction center subunit II;
DE   AltName: Full=Photosystem I 16 kDa polypeptide;
DE            Short=PSI-D;
GN   Name=psaD;
OS   Thermostichus vulcanus (Synechococcus vulcanus).
OC   Bacteria; Cyanobacteria; Thermostichales; Thermostichaceae; Thermostichus.
OX   NCBI_TaxID=32053;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Shichijyo S., Hiyama T.;
RL   Submitted (NOV-1994) to the EMBL/GenBank/DDBJ databases.
RN   [2]
RP   PROTEIN SEQUENCE OF 2-30.
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: PsaD can form complexes with ferredoxin and ferredoxin-
CC       oxidoreductase in photosystem I (PS I) reaction center.
CC   -!- SIMILARITY: Belongs to the PsaD family. {ECO:0000305}.
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DR   EMBL; D17355; BAA04174.1; -; Genomic_DNA.
DR   PIR; S05218; S05218.
DR   PDB; 6K33; EM; 2.74 A; aD/bD/cD=2-139.
DR   PDBsum; 6K33; -.
DR   AlphaFoldDB; P0A422; -.
DR   SMR; P0A422; -.
DR   GO; GO:0009538; C:photosystem I reaction center; IEA:InterPro.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR   InterPro; IPR003685; PsaD.
DR   InterPro; IPR036579; PsaD_sf.
DR   PANTHER; PTHR31982; PTHR31982; 1.
DR   Pfam; PF02531; PsaD; 1.
DR   SUPFAM; SSF64234; SSF64234; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Direct protein sequencing; Photosynthesis; Photosystem I.
FT   INIT_MET        1
FT                   /note="Removed"
FT                   /evidence="ECO:0000269|PubMed:2503399"
FT   CHAIN           2..139
FT                   /note="Photosystem I reaction center subunit II"
FT                   /id="PRO_0000206056"
FT   REGION          113..139
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   COMPBIAS        116..130
FT                   /note="Polar residues"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   CONFLICT        22
FT                   /note="Missing (in Ref. 2; AA sequence)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   139 AA;  15371 MW;  7073427556CF26F9 CRC64;
     MTTLTGQPPL YGGSTGGLLS AADTEEKYAI TWTSPKEQVF EMPTAGAAVM REGENLVYFA
     RKEQCLALAA QQLRPRKIND YKIYRIFPDG ETVLIHPKDG VFPEKVNKGR EAVNSVPRSI
     GQNPNPSQLK FTGKKPYDP