PSBI_CYAM1
ID PSBI_CYAM1 Reviewed; 38 AA.
AC Q85FP4;
DT 03-JUL-2003, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 03-AUG-2022, entry version 76.
DE RecName: Full=Photosystem II reaction center protein I {ECO:0000255|HAMAP-Rule:MF_01316};
DE Short=PSII-I {ECO:0000255|HAMAP-Rule:MF_01316};
DE AltName: Full=PSII 4.8 kDa protein {ECO:0000255|HAMAP-Rule:MF_01316};
GN Name=psbI {ECO:0000255|HAMAP-Rule:MF_01316};
OS Cyanidioschyzon merolae (strain NIES-3377 / 10D) (Unicellular red alga).
OG Plastid; Chloroplast.
OC Eukaryota; Rhodophyta; Bangiophyceae; Cyanidiales; Cyanidiaceae;
OC Cyanidioschyzon.
OX NCBI_TaxID=280699;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=NIES-3377 / 10D;
RX PubMed=12755171; DOI=10.1093/dnares/10.2.67;
RA Ohta N., Matsuzaki M., Misumi O., Miyagishima S.-Y., Nozaki H., Tanaka K.,
RA Shin-i T., Kohara Y., Kuroiwa T.;
RT "Complete sequence and analysis of the plastid genome of the unicellular
RT red alga Cyanidioschyzon merolae.";
RL DNA Res. 10:67-77(2003).
CC -!- FUNCTION: One of the components of the core complex of photosystem II
CC (PSII), required for its stability and/or assembly. PSII is a light-
CC driven water:plastoquinone oxidoreductase that uses light energy to
CC abstract electrons from H(2)O, generating O(2) and a proton gradient
CC subsequently used for ATP formation. It consists of a core antenna
CC complex that captures photons, and an electron transfer chain that
CC converts photonic excitation into a charge separation.
CC {ECO:0000255|HAMAP-Rule:MF_01316}.
CC -!- SUBUNIT: PSII is composed of 1 copy each of membrane proteins PsbA,
CC PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT,
CC PsbX, PsbY, PsbZ, Ycf12, at least 3 peripheral proteins of the oxygen-
CC evolving complex and a large number of cofactors. It forms dimeric
CC complexes. {ECO:0000255|HAMAP-Rule:MF_01316}.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC {ECO:0000255|HAMAP-Rule:MF_01316}; Single-pass membrane protein
CC {ECO:0000255|HAMAP-Rule:MF_01316}.
CC -!- SIMILARITY: Belongs to the PsbI family. {ECO:0000255|HAMAP-
CC Rule:MF_01316}.
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DR EMBL; AB002583; BAC76301.1; -; Genomic_DNA.
DR RefSeq; NP_849139.1; NC_004799.1.
DR AlphaFoldDB; Q85FP4; -.
DR SMR; Q85FP4; -.
DR STRING; 45157.CMV240CT; -.
DR EnsemblPlants; CMV240CT; CMV240CT; CMV240C.
DR GeneID; 844953; -.
DR Gramene; CMV240CT; CMV240CT; CMV240C.
DR KEGG; cme:CymeCp207; -.
DR eggNOG; ENOG502SEUZ; Eukaryota.
DR HOGENOM; CLU_212150_0_0_1; -.
DR Proteomes; UP000007014; Chloroplast.
DR GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0009539; C:photosystem II reaction center; IEA:InterPro.
DR GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR HAMAP; MF_01316; PSII_PsbI; 1.
DR InterPro; IPR003686; PSII_PsbI.
DR InterPro; IPR037271; PSII_PsbI_sf.
DR PANTHER; PTHR35772; PTHR35772; 1.
DR Pfam; PF02532; PsbI; 1.
DR SUPFAM; SSF161041; SSF161041; 1.
PE 3: Inferred from homology;
KW Chloroplast; Membrane; Photosynthesis; Photosystem II; Plastid;
KW Reaction center; Reference proteome; Thylakoid; Transmembrane;
KW Transmembrane helix.
FT CHAIN 1..38
FT /note="Photosystem II reaction center protein I"
FT /id="PRO_0000219624"
FT TRANSMEM 4..24
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01316"
SQ SEQUENCE 38 AA; 4474 MW; C049BEB00E82610D CRC64;
MLTLKIFVYT CVIFFSSLFI FGFLSNDPSR NPNRKDLE
