PETG_GRATL
ID PETG_GRATL Reviewed; 37 AA.
AC Q6B8U9;
DT 15-MAR-2005, integrated into UniProtKB/Swiss-Prot.
DT 13-SEP-2004, sequence version 1.
DT 25-MAY-2022, entry version 60.
DE RecName: Full=Cytochrome b6-f complex subunit 5 {ECO:0000255|HAMAP-Rule:MF_00432};
DE AltName: Full=Cytochrome b6-f complex subunit PetG {ECO:0000255|HAMAP-Rule:MF_00432};
DE AltName: Full=Cytochrome b6-f complex subunit V {ECO:0000255|HAMAP-Rule:MF_00432};
GN Name=petG {ECO:0000255|HAMAP-Rule:MF_00432}; OrderedLocusNames=Grc000105;
OS Gracilaria tenuistipitata var. liui (Red alga).
OG Plastid; Chloroplast.
OC Eukaryota; Rhodophyta; Florideophyceae; Rhodymeniophycidae; Gracilariales;
OC Gracilariaceae; Agarophyton; Agarophyton tenuistipitatum.
OX NCBI_TaxID=285951;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RX PubMed=15638458; DOI=10.1007/s00239-004-2638-3;
RA Hagopian J.C., Reis M., Kitajima J.P., Bhattacharya D., de Oliveira M.C.;
RT "Comparative analysis of the complete plastid genome sequence of the red
RT alga Gracilaria tenuistipitata var. liui provides insights into the
RT evolution of rhodoplasts and their relationship to other plastids.";
RL J. Mol. Evol. 59:464-477(2004).
CC -!- FUNCTION: Component of the cytochrome b6-f complex, which mediates
CC electron transfer between photosystem II (PSII) and photosystem I
CC (PSI), cyclic electron flow around PSI, and state transitions. PetG is
CC required for either the stability or assembly of the cytochrome b6-f
CC complex. {ECO:0000255|HAMAP-Rule:MF_00432}.
CC -!- SUBUNIT: The 4 large subunits of the cytochrome b6-f complex are
CC cytochrome b6, subunit IV (17 kDa polypeptide, PetD), cytochrome f and
CC the Rieske protein, while the 4 small subunits are PetG, PetL, PetM and
CC PetN. The complex functions as a dimer. {ECO:0000255|HAMAP-
CC Rule:MF_00432}.
CC -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC {ECO:0000255|HAMAP-Rule:MF_00432}; Single-pass membrane protein
CC {ECO:0000255|HAMAP-Rule:MF_00432}.
CC -!- SIMILARITY: Belongs to the PetG family. {ECO:0000255|HAMAP-
CC Rule:MF_00432}.
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DR EMBL; AY673996; AAT79686.1; -; Genomic_DNA.
DR RefSeq; YP_063611.1; NC_006137.1.
DR AlphaFoldDB; Q6B8U9; -.
DR SMR; Q6B8U9; -.
DR GeneID; 2943989; -.
DR GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR GO; GO:0009512; C:cytochrome b6f complex; IEA:InterPro.
DR GO; GO:0016021; C:integral component of membrane; IEA:UniProtKB-KW.
DR GO; GO:0045158; F:electron transporter, transferring electrons within cytochrome b6/f complex of photosystem II activity; IEA:UniProtKB-UniRule.
DR GO; GO:0017004; P:cytochrome complex assembly; IEA:UniProtKB-UniRule.
DR GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-KW.
DR HAMAP; MF_00432; Cytb6_f_PetG; 1.
DR InterPro; IPR003683; Cyt_6/f_cplx_su5.
DR InterPro; IPR036099; Cyt_6/f_cplx_su5_sf.
DR PANTHER; PTHR35516; PTHR35516; 1.
DR Pfam; PF02529; PetG; 1.
DR PIRSF; PIRSF000034; Cyt_b6-f_V; 1.
DR SUPFAM; SSF103446; SSF103446; 1.
PE 3: Inferred from homology;
KW Chloroplast; Electron transport; Membrane; Photosynthesis; Plastid;
KW Thylakoid; Transmembrane; Transmembrane helix; Transport.
FT CHAIN 1..37
FT /note="Cytochrome b6-f complex subunit 5"
FT /id="PRO_0000216383"
FT TRANSMEM 5..25
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00432"
SQ SEQUENCE 37 AA; 4033 MW; 2197659F4A646A4C CRC64;
MVEPLLSGIV LGLIPVTLFG LLVAAYLQYR RGNQFGL