PSBI_ARATH
ID PSBI_ARATH Reviewed; 36 AA.
AC P62100; P09970;
DT 21-JUN-2004, integrated into UniProtKB/Swiss-Prot.
DT 21-JUN-2004, sequence version 1.
DT 03-AUG-2022, entry version 92.
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}; OrderedLocusNames=AtCg00080;
OS Arabidopsis thaliana (Mouse-ear cress).
OG Plastid; Chloroplast.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC rosids; malvids; Brassicales; Brassicaceae; Camelineae; Arabidopsis.
OX NCBI_TaxID=3702;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=cv. Columbia;
RX PubMed=10574454; DOI=10.1093/dnares/6.5.283;
RA Sato S., Nakamura Y., Kaneko T., Asamizu E., Tabata S.;
RT "Complete structure of the chloroplast genome of Arabidopsis thaliana.";
RL DNA Res. 6:283-290(1999).
RN [2]
RP INTERACTION WITH PAM68.
RX PubMed=20923938; DOI=10.1105/tpc.110.077453;
RA Armbruster U., Zuhlke J., Rengstl B., Kreller R., Makarenko E., Ruhle T.,
RA Schunemann D., Jahns P., Weisshaar B., Nickelsen J., Leister D.;
RT "The Arabidopsis thylakoid protein PAM68 is required for efficient D1
RT biogenesis and photosystem II assembly.";
RL Plant Cell 22:3439-3460(2010).
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. Interacts with PAM68 (PubMed:20923938). {ECO:0000255|HAMAP-
CC Rule:MF_01316, ECO:0000269|PubMed:20923938}.
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; AP000423; BAA84369.1; -; Genomic_DNA.
DR RefSeq; NP_051043.1; NC_000932.1.
DR PDB; 5MDX; EM; 5.30 A; I/i=1-36.
DR PDB; 7OUI; EM; 2.79 A; I/i=1-36.
DR PDBsum; 5MDX; -.
DR PDBsum; 7OUI; -.
DR AlphaFoldDB; P62100; -.
DR SMR; P62100; -.
DR IntAct; P62100; 1.
DR STRING; 3702.ATCG00080.1; -.
DR TCDB; 3.E.2.2.3; the photosynthetic reaction center (prc) family.
DR PaxDb; P62100; -.
DR EnsemblPlants; ATCG00080.1; ATCG00080.1; ATCG00080.
DR GeneID; 844794; -.
DR Gramene; ATCG00080.1; ATCG00080.1; ATCG00080.
DR KEGG; ath:ArthCp006; -.
DR Araport; ATCG00080; -.
DR TAIR; locus:504954632; ATCG00080.
DR eggNOG; ENOG502SEUZ; Eukaryota.
DR HOGENOM; CLU_212150_0_0_1; -.
DR InParanoid; P62100; -.
DR OrthoDB; 1641960at2759; -.
DR BioCyc; MetaCyc:ATCG00080-MON; -.
DR PRO; PR:P62100; -.
DR Proteomes; UP000006548; Chloroplast.
DR ExpressionAtlas; P62100; baseline and differential.
DR Genevisible; P62100; AT.
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 1: Evidence at protein level;
KW 3D-structure; Chloroplast; Membrane; Photosynthesis; Photosystem II;
KW Plastid; Reaction center; Reference proteome; Thylakoid; Transmembrane;
KW Transmembrane helix.
FT CHAIN 1..36
FT /note="Photosystem II reaction center protein I"
FT /id="PRO_0000219617"
FT TRANSMEM 4..24
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01316"
FT HELIX 2..23
FT /evidence="ECO:0007829|PDB:7OUI"
FT TURN 24..26
FT /evidence="ECO:0007829|PDB:7OUI"
SQ SEQUENCE 36 AA; 4168 MW; 6B6C7FCB57BB6236 CRC64;
MLTLKLFVYT VVIFFVSLFI FGFLSNDPGR NPGREE
