ID   CYF_SOLBU               Reviewed;         320 AA.
AC   Q2MIH4;
DT   06-FEB-2007, integrated into UniProtKB/Swiss-Prot.
DT   07-FEB-2006, sequence version 1.
DT   03-AUG-2022, entry version 68.
DE   RecName: Full=Cytochrome f {ECO:0000255|HAMAP-Rule:MF_00610};
DE   Flags: Precursor;
GN   Name=petA {ECO:0000255|HAMAP-Rule:MF_00610};
OS   Solanum bulbocastanum (Wild potato).
OG   Plastid; Chloroplast.
OC   Eukaryota; Viridiplantae; Streptophyta; Embryophyta; Tracheophyta;
OC   Spermatophyta; Magnoliopsida; eudicotyledons; Gunneridae; Pentapetalae;
OC   asterids; lamiids; Solanales; Solanaceae; Solanoideae; Solaneae; Solanum.
OX   NCBI_TaxID=147425;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=cv. PT29;
RX   PubMed=16575560; DOI=10.1007/s00122-006-0254-x;
RA   Daniell H., Lee S.-B., Grevich J., Saski C., Quesada-Vargas T., Guda C.,
RA   Tomkins J., Jansen R.K.;
RT   "Complete chloroplast genome sequences of Solanum bulbocastanum, Solanum
RT   lycopersicum and comparative analyses with other Solanaceae genomes.";
RL   Theor. Appl. Genet. 112:1503-1518(2006).
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.
CC       {ECO:0000255|HAMAP-Rule:MF_00610}.
CC   -!- COFACTOR:
CC       Name=heme; Xref=ChEBI:CHEBI:30413;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00610};
CC       Note=Binds 1 heme group covalently. {ECO:0000255|HAMAP-Rule:MF_00610};
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 (By similarity). {ECO:0000250}.
CC   -!- SUBCELLULAR LOCATION: Plastid, chloroplast thylakoid membrane
CC       {ECO:0000255|HAMAP-Rule:MF_00610}; Single-pass membrane protein
CC       {ECO:0000255|HAMAP-Rule:MF_00610}.
CC   -!- SIMILARITY: Belongs to the cytochrome f family. {ECO:0000255|HAMAP-
CC       Rule:MF_00610}.
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DR   EMBL; DQ347958; ABC56226.1; -; Genomic_DNA.
DR   RefSeq; YP_538861.1; NC_007943.1.
DR   AlphaFoldDB; Q2MIH4; -.
DR   SMR; Q2MIH4; -.
DR   GeneID; 3989437; -.
DR   GO; GO:0009535; C:chloroplast thylakoid membrane; IEA:UniProtKB-SubCell.
DR   GO; GO:0031361; C:integral component of thylakoid membrane; IEA:InterPro.
DR   GO; GO:0009055; F:electron transfer activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0020037; F:heme binding; IEA:InterPro.
DR   GO; GO:0005506; F:iron ion binding; IEA:InterPro.
DR   GO; GO:0015979; P:photosynthesis; IEA:UniProtKB-UniRule.
DR   Gene3D; 2.60.40.830; -; 1.
DR   HAMAP; MF_00610; Cytb6_f_cytF; 1.
DR   InterPro; IPR024058; Cyt-f_TM.
DR   InterPro; IPR002325; Cyt_f.
DR   InterPro; IPR024094; Cyt_f_lg_dom.
DR   InterPro; IPR036826; Cyt_f_lg_dom_sf.
DR   InterPro; IPR011054; Rudment_hybrid_motif.
DR   Pfam; PF01333; Apocytochr_F_C; 1.
DR   Pfam; PF16639; Apocytochr_F_N; 1.
DR   PRINTS; PR00610; CYTOCHROMEF.
DR   SUPFAM; SSF103431; SSF103431; 1.
DR   SUPFAM; SSF49441; SSF49441; 1.
DR   SUPFAM; SSF51246; SSF51246; 1.
DR   PROSITE; PS51010; CYTF; 1.
PE   3: Inferred from homology;
KW   Chloroplast; Electron transport; Heme; Iron; Membrane; Metal-binding;
KW   Photosynthesis; Plastid; Signal; Thylakoid; Transmembrane;
KW   Transmembrane helix; Transport.
FT   SIGNAL          1..35
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00610"
FT   CHAIN           36..320
FT                   /note="Cytochrome f"
FT                   /id="PRO_0000275449"
FT   TRANSMEM        286..306
FT                   /note="Helical"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00610"
FT   BINDING         36
FT                   /ligand="heme"
FT                   /ligand_id="ChEBI:CHEBI:30413"
FT                   /ligand_part="Fe"
FT                   /ligand_part_id="ChEBI:CHEBI:18248"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00610"
FT   BINDING         56
FT                   /ligand="heme"
FT                   /ligand_id="ChEBI:CHEBI:30413"
FT                   /note="covalent"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00610"
FT   BINDING         59
FT                   /ligand="heme"
FT                   /ligand_id="ChEBI:CHEBI:30413"
FT                   /note="covalent"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00610"
FT   BINDING         60
FT                   /ligand="heme"
FT                   /ligand_id="ChEBI:CHEBI:30413"
FT                   /ligand_part="Fe"
FT                   /ligand_part_id="ChEBI:CHEBI:18248"
FT                   /note="axial binding residue"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00610"
SQ   SEQUENCE   320 AA;  35218 MW;  6053D37CD5A84097 CRC64;
     MQTRNAFSWL KKQITRSISV SLMIYILTRT SISSAYPIFA QQGYENPREA TGRIVCANCH
     LANKPVEIEV PQAVLPDTVF EAVVRIPYDM QLKQVLANGK KGGLNVGAVL ILPEGFELAP
     PDRISPEMKE KIGNLSFQSY RPNKTNILVV GPVPGKKYSE ITFPILSPDP ATKKDVHFLK
     YPIYVGGNRG RGQIYPDGNK SNNTVYNATA AGIVSKIIRK EKGGYEITIT DASEGRQVVD
     IIPPGPELLV SEGESIKFDQ PLTSNPNVGG FGQGDAEIVL QDPLRVQGLL FFLASVILAQ
     IFLVLKKKQF EKVQLAEMNF