ID   PSBI_CARPA              Reviewed;          36 AA.
AC   B1A919;
DT   04-NOV-2008, integrated into UniProtKB/Swiss-Prot.
DT   08-APR-2008, sequence version 1.
DT   25-MAY-2022, entry version 39.
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   Carica papaya (Papaya).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   rosids; malvids; Brassicales; Caricaceae; Carica.
OX   NCBI_TaxID=3649;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. SunUp;
RX   PubMed=18432245; DOI=10.1038/nature06856;
RA   Ming R., Hou S., Feng Y., Yu Q., Dionne-Laporte A., Saw J.H., Senin P.,
RA   Wang W., Ly B.V., Lewis K.L., Salzberg S.L., Feng L., Jones M.R.,
RA   Skelton R.L., Murray J.E., Chen C., Qian W., Shen J., Du P., Eustice M.,
RA   Tong E., Tang H., Lyons E., Paull R.E., Michael T.P., Wall K., Rice D.W.,
RA   Albert H., Wang M.L., Zhu Y.J., Schatz M., Nagarajan N., Acob R.A.,
RA   Guan P., Blas A., Wai C.M., Ackerman C.M., Ren Y., Liu C., Wang J.,
RA   Wang J., Na J.K., Shakirov E.V., Haas B., Thimmapuram J., Nelson D.,
RA   Wang X., Bowers J.E., Gschwend A.R., Delcher A.L., Singh R., Suzuki J.Y.,
RA   Tripathi S., Neupane K., Wei H., Irikura B., Paidi M., Jiang N., Zhang W.,
RA   Presting G., Windsor A., Navajas-Perez R., Torres M.J., Feltus F.A.,
RA   Porter B., Li Y., Burroughs A.M., Luo M.C., Liu L., Christopher D.A.,
RA   Mount S.M., Moore P.H., Sugimura T., Jiang J., Schuler M.A., Friedman V.,
RA   Mitchell-Olds T., Shippen D.E., dePamphilis C.W., Palmer J.D., Freeling M.,
RA   Paterson A.H., Gonsalves D., Wang L., Alam M.;
RT   "The draft genome of the transgenic tropical fruit tree papaya (Carica
RT   papaya Linnaeus).";
RL   Nature 452:991-996(2008).
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; EU431223; ABY86766.1; -; Genomic_DNA.
DR   RefSeq; YP_001671667.1; NC_010323.1.
DR   AlphaFoldDB; B1A919; -.
DR   SMR; B1A919; -.
DR   GeneID; 5878372; -.
DR   KEGG; cpap:5878372; -.
DR   OrthoDB; 1641960at2759; -.
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_0000353220"
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