PSBI_ANTAG
ID PSBI_ANTAG Reviewed; 36 AA.
AC Q85CN1;
DT 03-JUL-2003, integrated into UniProtKB/Swiss-Prot.
DT 01-JUN-2003, sequence version 1.
DT 25-MAY-2022, entry version 58.
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 Anthoceros angustus (Hornwort) (Anthoceros formosae).
OG Plastid; Chloroplast.
OC Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Anthocerotophyta;
OC Anthocerotopsida; Anthocerotidae; Anthocerotales; Anthocerotaceae;
OC Anthoceros.
OX NCBI_TaxID=48387;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=12527781; DOI=10.1093/nar/gkg155;
RA Kugita M., Kaneko A., Yamamoto Y., Takeya Y., Matsumoto T., Yoshinaga K.;
RT "The complete nucleotide sequence of the hornwort (Anthoceros formosae)
RT chloroplast genome: insight into the earliest land plants.";
RL Nucleic Acids Res. 31:716-721(2003).
RN [2]
RP NUCLEOTIDE SEQUENCE [MRNA], AND ABSENCE OF RNA EDITING.
RC TISSUE=Thallus;
RX PubMed=12711687; DOI=10.1093/nar/gkg327;
RA Kugita M., Yamamoto Y., Fujikawa T., Matsumoto T., Yoshinaga K.;
RT "RNA editing in hornwort chloroplasts makes more than half the genes
RT functional.";
RL Nucleic Acids Res. 31:2417-2423(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; AB086179; BAC55336.1; -; Genomic_DNA.
DR EMBL; AB087428; BAC55427.1; -; mRNA.
DR RefSeq; NP_777400.1; NC_004543.1.
DR AlphaFoldDB; Q85CN1; -.
DR SMR; Q85CN1; -.
DR GeneID; 2553403; -.
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 2: Evidence at transcript level;
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_0000219616"
FT TRANSMEM 4..24
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_01316"
SQ SEQUENCE 36 AA; 4224 MW; 11088FCB57BB623D CRC64;
MLTLKLFVYT VVIFFVSLFV FGFLSNDPKR NPGRKE
