ID   PSAD_CYAPA              Reviewed;         220 AA.
AC   Q9T4W8;
DT   27-SEP-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-MAY-2000, sequence version 1.
DT   03-AUG-2022, entry version 59.
DE   RecName: Full=Photosystem I reaction center subunit II, cyanelle;
DE   AltName: Full=Photosystem I 20 kDa subunit;
DE            Short=PSI-D;
DE   Flags: Precursor;
GN   Name=psaD;
OS   Cyanophora paradoxa.
OC   Eukaryota; Glaucocystophyceae; Cyanophoraceae; Cyanophora.
OX   NCBI_TaxID=2762;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA].
RC   STRAIN=Pringsheim B 29.80;
RA   Nickol A.A., Mueller N.E., Schenk H.E.A.;
RT   "Nucleotide sequence of a cDNA encoding the entire precursor polypeptide
RT   for the 20 kDa PS I polypeptide of the photosystem I reaction center from
RT   Cyanophora paradoxa.";
RL   Submitted (FEB-1999) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: PsaD can form complexes with ferredoxin and ferredoxin-
CC       oxidoreductase in photosystem I (PS I) reaction center. PSAD may encode
CC       the ferredoxin-docking protein (By similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, cyanelle thylakoid membrane
CC       {ECO:0000250}; Peripheral membrane protein {ECO:0000250}; Stromal side
CC       {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the PsaD family. {ECO:0000305}.
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DR   EMBL; AJ132477; CAB64901.1; -; mRNA.
DR   PDB; 7DR0; EM; 3.30 A; D=1-220.
DR   PDB; 7DR1; EM; 3.20 A; D=1-220.
DR   PDB; 7DR2; EM; 3.80 A; aD/bD/cD/dD=1-220.
DR   PDBsum; 7DR0; -.
DR   PDBsum; 7DR1; -.
DR   PDBsum; 7DR2; -.
DR   AlphaFoldDB; Q9T4W8; -.
DR   SMR; Q9T4W8; -.
DR   GO; GO:0033115; C:cyanelle thylakoid membrane; IEA:UniProtKB-SubCell.
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; Cyanelle; Membrane; Photosynthesis; Photosystem I; Plastid;
KW   Thylakoid; Transit peptide.
FT   TRANSIT         1..53
FT                   /note="Cyanelle"
FT                   /evidence="ECO:0000255"
FT   CHAIN           54..220
FT                   /note="Photosystem I reaction center subunit II, cyanelle"
FT                   /id="PRO_0000042150"
FT   REGION          192..220
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
SQ   SEQUENCE   220 AA;  23660 MW;  C5E08D8F7CD116D2 CRC64;
     MNAFVASVAP IAVAGSATLS SAVCAQKKAF FGAQVAAKKT TFEAAPARFI VRAEEEEAAP
     AEKVEKKAAA PKPFSVPTLN LNAPTPIFGG STGGLLRKAE VEEFYSITWT GKSETVFELP
     TGGAAIMRAG ENLLRLARKE QCIALGAQLK DKFKITDYKI YRVYPSGEVQ FLHPKDGVFP
     EKVNPGRVAV GSNKRRIGQN PDPAKLKFKG QETFDSDLKL