PSBH_PROHO
ID PSBH_PROHO Reviewed; 64 AA.
AC P31095;
DT 01-JUL-1993, integrated into UniProtKB/Swiss-Prot.
DT 15-MAR-2004, sequence version 2.
DT 25-MAY-2022, entry version 87.
DE RecName: Full=Photosystem II reaction center protein H {ECO:0000255|HAMAP-Rule:MF_00752};
DE Short=PSII-H {ECO:0000255|HAMAP-Rule:MF_00752};
GN Name=psbH {ECO:0000255|HAMAP-Rule:MF_00752};
OS Prochlorothrix hollandica.
OC Bacteria; Cyanobacteria; Pseudanabaenales; Prochlorotrichaceae;
OC Prochlorothrix.
OX NCBI_TaxID=1223;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=1623188; DOI=10.1007/bf00023383;
RA Greer K.L., Golden S.S.;
RT "Conserved relationship between psbH and petBD genes: presence of a shared
RT upstream element in Prochlorothrix hollandica.";
RL Plant Mol. Biol. 19:355-365(1992).
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_00752}.
CC -!- SUBUNIT: PSII is composed of 1 copy each of membrane proteins PsbA,
CC PsbB, PsbC, PsbD, numerous small proteins, at least 3 peripheral
CC proteins of the oxygen-evolving complex and a large number of
CC cofactors. It forms dimeric complexes. {ECO:0000255|HAMAP-
CC Rule:MF_00752}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC Rule:MF_00752}; Single-pass membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_00752}.
CC -!- SIMILARITY: Belongs to the PsbH family. {ECO:0000255|HAMAP-
CC Rule:MF_00752}.
CC -!- SEQUENCE CAUTION:
CC Sequence=CAA42862.1; Type=Erroneous initiation; Note=Extended N-terminus.; Evidence={ECO:0000305};
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DR EMBL; X60314; CAA42862.1; ALT_INIT; Genomic_DNA.
DR EMBL; X60314; CAA42863.1; -; Genomic_DNA.
DR PIR; S22473; S16854.
DR AlphaFoldDB; P31095; -.
DR SMR; P31095; -.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0009523; C:photosystem II; IEA:UniProtKB-KW.
DR GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0042301; F:phosphate ion binding; IEA:InterPro.
DR GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR GO; GO:0050821; P:protein stabilization; IEA:InterPro.
DR Gene3D; 1.20.5.880; -; 1.
DR HAMAP; MF_00752; PSII_PsbH; 1.
DR InterPro; IPR001056; PSII_PsbH.
DR InterPro; IPR036863; PSII_PsbH_sf.
DR PANTHER; PTHR34469; PTHR34469; 1.
DR Pfam; PF00737; PsbH; 1.
DR SUPFAM; SSF161025; SSF161025; 1.
PE 3: Inferred from homology;
KW Membrane; Photosynthesis; Photosystem II; Thylakoid; Transmembrane;
KW Transmembrane helix.
FT CHAIN 1..64
FT /note="Photosystem II reaction center protein H"
FT /id="PRO_0000070542"
FT TRANSMEM 29..49
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00752"
SQ SEQUENCE 64 AA; 6863 MW; 9D38608E861DA32A CRC64;
MGQKTALSNF LKPFNSNAGK VVPGWGTTPL MGLFMGLLFV FLLIILQIYN STIVLDAFSV
NVGG