PSBI_SECCE
ID PSBI_SECCE Reviewed; 36 AA.
AC P62107; P09970;
DT 21-JUN-2004, integrated into UniProtKB/Swiss-Prot.
DT 21-JUN-2004, sequence version 1.
DT 25-MAY-2022, entry version 54.
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 Secale cereale (Rye).
OG Plastid; Chloroplast.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; Liliopsida; Poales; Poaceae; BOP clade;
OC Pooideae; Triticodae; Triticeae; Hordeinae; Secale.
OX NCBI_TaxID=4550;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=2644624; DOI=10.1093/nar/17.2.798;
RA Bukharov A.A., Kolosov V.L., Klezovich O.N., Zolotarev A.S.;
RT "Nucleotide sequence of rye chloroplast DNA fragment, comprising psbD, psbC
RT and trnS genes.";
RL Nucleic Acids Res. 17:798-798(1989).
RN [2]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=1888340;
RA Kolosov V.L., Bukharov A.A., Zolotarev A.S.;
RT "Photosystem II of rye. Nucleotide sequence of psbD, psbI genes encoding
RT reaction center proteins.";
RL Bioorg. Khim. 17:448-455(1991).
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; X61674; CAA43849.1; -; Genomic_DNA.
DR PIR; JN0315; JN0315.
DR RefSeq; YP_008239156.1; NC_021761.1.
DR AlphaFoldDB; P62107; -.
DR SMR; P62107; -.
DR GeneID; 16792744; -.
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; Thylakoid; Transmembrane; Transmembrane helix.
FT CHAIN 1..36
FT /note="Photosystem II reaction center protein I"
FT /id="PRO_0000219653"
FT TRANSMEM 4..24
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01316"
SQ SEQUENCE 36 AA; 4168 MW; 6B6C7FCB57BB6236 CRC64;
MLTLKLFVYT VVIFFVSLFI FGFLSNDPGR NPGREE
