ID   PSAI_THEVB              Reviewed;          38 AA.
AC   P0A427; P25900;
DT   15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-MAR-2005, sequence version 1.
DT   03-AUG-2022, entry version 98.
DE   RecName: Full=Photosystem I reaction center subunit VIII;
GN   Name=psaI; OrderedLocusNames=tsr2405;
OS   Thermosynechococcus vestitus (strain NIES-2133 / IAM M-273 / BP-1).
OC   Bacteria; Cyanobacteria; Pseudanabaenales; Thermosynechococcaceae;
OC   Thermosynechococcus.
OX   NCBI_TaxID=197221;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NIES-2133 / IAM M-273 / BP-1;
RX   PubMed=12240834; DOI=10.1093/dnares/9.4.123;
RA   Nakamura Y., Kaneko T., Sato S., Ikeuchi M., Katoh H., Sasamoto S.,
RA   Watanabe A., Iriguchi M., Kawashima K., Kimura T., Kishida Y., Kiyokawa C.,
RA   Kohara M., Matsumoto M., Matsuno A., Nakazaki N., Shimpo S., Sugimoto M.,
RA   Takeuchi C., Yamada M., Tabata S.;
RT   "Complete genome structure of the thermophilic cyanobacterium
RT   Thermosynechococcus elongatus BP-1.";
RL   DNA Res. 9:123-130(2002).
RN   [2]
RP   X-RAY CRYSTALLOGRAPHY (4.0 ANGSTROMS).
RX   PubMed=8901876; DOI=10.1038/nsb1196-965;
RA   Krauss N., Schubert W.-D., Klukas O., Fromme P., Witt H.T., Saenger W.;
RT   "Photosystem I at 4-A resolution represents the first structural model of a
RT   joint photosynthetic reaction centre and core antenna system.";
RL   Nat. Struct. Biol. 3:965-973(1996).
RN   [3]
RP   X-RAY CRYSTALLOGRAPHY (2.5 ANGSTROMS).
RX   PubMed=11418848; DOI=10.1038/35082000;
RA   Jordan P., Fromme P., Witt H.T., Klukas O., Saenger W., Krauss N.;
RT   "Three-dimensional structure of cyanobacterial photosystem I at 2.5 A
RT   resolution.";
RL   Nature 411:909-917(2001).
CC   -!- FUNCTION: May help in the organization of the PsaL subunit.
CC       {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000250};
CC       Single-pass membrane protein {ECO:0000250}.
CC   -!- SIMILARITY: Belongs to the PsaI family. {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; BA000039; BAC09957.1; -; Genomic_DNA.
DR   RefSeq; NP_683195.1; NC_004113.1.
DR   RefSeq; WP_011058237.1; NC_004113.1.
DR   PDB; 1JB0; X-ray; 2.50 A; I=1-38.
DR   PDB; 2PPS; X-ray; 4.00 A; -.
DR   PDB; 3PCQ; X-ray; 8.98 A; I=1-38.
DR   PDB; 4FE1; X-ray; 4.92 A; I=1-38.
DR   PDB; 5ZF0; X-ray; 4.20 A; I1/I2/I3/I4/I5/I6=1-38.
DR   PDB; 6LU1; EM; 3.20 A; I=1-38.
DR   PDB; 6PFY; X-ray; 2.90 A; I/R/e=1-38.
DR   PDB; 6PGK; X-ray; 2.90 A; I/R/e=1-38.
DR   PDB; 6TRA; EM; 2.85 A; I=1-38.
DR   PDB; 6TRC; EM; 2.98 A; 7/I/i=1-38.
DR   PDB; 6TRD; EM; 3.16 A; 7/I/i=1-38.
DR   PDB; 7BW2; X-ray; 6.50 A; I=1-38.
DR   PDB; 7M75; X-ray; 2.75 A; I=1-38.
DR   PDB; 7M76; X-ray; 3.00 A; I=1-38.
DR   PDB; 7M78; X-ray; 3.00 A; I=1-38.
DR   PDBsum; 1JB0; -.
DR   PDBsum; 2PPS; -.
DR   PDBsum; 3PCQ; -.
DR   PDBsum; 4FE1; -.
DR   PDBsum; 5ZF0; -.
DR   PDBsum; 6LU1; -.
DR   PDBsum; 6PFY; -.
DR   PDBsum; 6PGK; -.
DR   PDBsum; 6TRA; -.
DR   PDBsum; 6TRC; -.
DR   PDBsum; 6TRD; -.
DR   PDBsum; 7BW2; -.
DR   PDBsum; 7M75; -.
DR   PDBsum; 7M76; -.
DR   PDBsum; 7M78; -.
DR   AlphaFoldDB; P0A427; -.
DR   SMR; P0A427; -.
DR   IntAct; P0A427; 1.
DR   STRING; 197221.22296133; -.
DR   EnsemblBacteria; BAC09957; BAC09957; BAC09957.
DR   KEGG; tel:tsr2405; -.
DR   PATRIC; fig|197221.4.peg.2528; -.
DR   eggNOG; ENOG5033AVJ; Bacteria.
DR   OrthoDB; 2080297at2; -.
DR   EvolutionaryTrace; P0A427; -.
DR   Proteomes; UP000000440; Chromosome.
DR   GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR   GO; GO:0009522; C:photosystem I; IEA:UniProtKB-KW.
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_00431; PSI_PsaI; 1.
DR   InterPro; IPR001302; PSI_PsaI.
DR   InterPro; IPR036357; PSI_PsaI_sf.
DR   Pfam; PF00796; PSI_8; 1.
DR   SUPFAM; SSF81540; SSF81540; 1.
DR   TIGRFAMs; TIGR03052; PS_I_psaI; 1.
PE   1: Evidence at protein level;
KW   3D-structure; Membrane; Photosynthesis; Photosystem I; Reference proteome;
KW   Thylakoid; Transmembrane; Transmembrane helix.
FT   CHAIN           1..38
FT                   /note="Photosystem I reaction center subunit VIII"
FT                   /id="PRO_0000194682"
FT   TRANSMEM        12..32
FT                   /note="Helical"
FT                   /evidence="ECO:0000255"
FT   TURN            6..9
FT                   /evidence="ECO:0007829|PDB:1JB0"
FT   HELIX           10..19
FT                   /evidence="ECO:0007829|PDB:1JB0"
FT   HELIX           21..35
FT                   /evidence="ECO:0007829|PDB:1JB0"
SQ   SEQUENCE   38 AA;  4297 MW;  E9B0178560DE5CF5 CRC64;
     MMGSYAASFL PWIFIPVVCW LMPTVVMGLL FLYIEGEA