CYF_NOSS1
ID CYF_NOSS1 Reviewed; 333 AA.
AC Q93SW9;
DT 10-JAN-2003, integrated into UniProtKB/Swiss-Prot.
DT 01-DEC-2001, sequence version 1.
DT 03-AUG-2022, entry version 126.
DE RecName: Full=Cytochrome f {ECO:0000255|HAMAP-Rule:MF_00610};
DE Flags: Precursor;
GN Name=petA {ECO:0000255|HAMAP-Rule:MF_00610}; OrderedLocusNames=all2452;
OS Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576).
OC Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Nostoc.
OX NCBI_TaxID=103690;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA Arnold M.;
RT "b6f complex of Anabaena sp., possible function of alternative Rieske-FeS
RT proteins.";
RL Submitted (MAY-2001) to the EMBL/GenBank/DDBJ databases.
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PCC 7120 / SAG 25.82 / UTEX 2576;
RX PubMed=11759840; DOI=10.1093/dnares/8.5.205;
RA Kaneko T., Nakamura Y., Wolk C.P., Kuritz T., Sasamoto S., Watanabe A.,
RA Iriguchi M., Ishikawa A., Kawashima K., Kimura T., Kishida Y., Kohara M.,
RA Matsumoto M., Matsuno A., Muraki A., Nakazaki N., Shimpo S., Sugimoto M.,
RA Takazawa M., Yamada M., Yasuda M., Tabata S.;
RT "Complete genomic sequence of the filamentous nitrogen-fixing
RT cyanobacterium Anabaena sp. strain PCC 7120.";
RL DNA Res. 8:205-213(2001).
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. {ECO:0000255|HAMAP-
CC Rule:MF_00610}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid membrane {ECO:0000255|HAMAP-
CC Rule:MF_00610}; Single-pass membrane protein {ECO:0000255|HAMAP-
CC Rule:MF_00610}.
CC -!- SIMILARITY: Belongs to the cytochrome f family. {ECO:0000255|HAMAP-
CC Rule:MF_00610}.
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DR EMBL; AJ319646; CAC39605.1; -; Genomic_DNA.
DR EMBL; BA000019; BAB74151.1; -; Genomic_DNA.
DR PIR; AE2112; AE2112.
DR RefSeq; WP_010996608.1; NZ_RSCN01000002.1.
DR PDB; 1TU2; NMR; -; B=45-298.
DR PDB; 2ZT9; X-ray; 3.00 A; C=45-333.
DR PDB; 4H44; X-ray; 2.70 A; C=45-333.
DR PDB; 4OGQ; X-ray; 2.50 A; C=1-333.
DR PDBsum; 1TU2; -.
DR PDBsum; 2ZT9; -.
DR PDBsum; 4H44; -.
DR PDBsum; 4OGQ; -.
DR AlphaFoldDB; Q93SW9; -.
DR SMR; Q93SW9; -.
DR DIP; DIP-61002N; -.
DR IntAct; Q93SW9; 1.
DR STRING; 103690.17131544; -.
DR TCDB; 3.D.3.5.6; the proton-translocating quinol:cytochrome c reductase (qcr) superfamily.
DR EnsemblBacteria; BAB74151; BAB74151; BAB74151.
DR KEGG; ana:all2452; -.
DR eggNOG; COG3258; Bacteria.
DR OMA; FWAQQNY; -.
DR OrthoDB; 744890at2; -.
DR EvolutionaryTrace; Q93SW9; -.
DR Proteomes; UP000002483; Chromosome.
DR GO; GO:0031361; C:integral component of thylakoid membrane; IEA:InterPro.
DR GO; GO:0031676; C:plasma membrane-derived thylakoid membrane; IEA:UniProtKB-SubCell.
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 1: Evidence at protein level;
KW 3D-structure; Electron transport; Heme; Iron; Membrane; Metal-binding;
KW Photosynthesis; Reference proteome; Signal; Thylakoid; Transmembrane;
KW Transmembrane helix; Transport.
FT SIGNAL 1..44
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00610"
FT CHAIN 45..333
FT /note="Cytochrome f"
FT /id="PRO_0000023842"
FT TRANSMEM 299..318
FT /note="Helical"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00610"
FT BINDING 45
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 66
FT /ligand="heme"
FT /ligand_id="ChEBI:CHEBI:30413"
FT /note="covalent"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00610"
FT BINDING 69
FT /ligand="heme"
FT /ligand_id="ChEBI:CHEBI:30413"
FT /note="covalent"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00610"
FT BINDING 70
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 HELIX 46..52
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 65..68
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 77..79
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 82..84
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 89..95
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 109..112
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 115..121
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 131..133
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 136..142
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 148..151
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 157..164
FT /evidence="ECO:0007829|PDB:4OGQ"
FT TURN 165..167
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 169..176
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 180..182
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 188..200
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 212..214
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 219..222
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 232..236
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 238..241
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 246..248
FT /evidence="ECO:0007829|PDB:2ZT9"
FT STRAND 249..251
FT /evidence="ECO:0007829|PDB:1TU2"
FT STRAND 253..259
FT /evidence="ECO:0007829|PDB:4OGQ"
FT STRAND 274..276
FT /evidence="ECO:0007829|PDB:1TU2"
FT STRAND 283..293
FT /evidence="ECO:0007829|PDB:4OGQ"
FT HELIX 296..329
FT /evidence="ECO:0007829|PDB:4OGQ"
SQ SEQUENCE 333 AA; 35925 MW; 523055089993C728 CRC64;
MRNACTRARL TRTARAMVKT LFIAIASVTF FFTSDLALPQ SAAAYPFWAQ QTYPETPREP
TGRIVCANCH LAAKPTEVEV PQSVLPDTVF KAVVKIPYDT SVQQVGADGS KVGLNVGAVL
MLPEGFKIAP EDRIPEELKE EIGDVYFQPY GEDKDNIVIV GPLPGEQYQE IVFPVLSPNP
ANDKNIHFGK YSVHVGGNRG RGQVYPTGEK SNNNLYSAAA TGTISKIAKQ EGEDGSVKYL
VDIKTESGEV VSDTIPAGPE LIVSEGQAVT AGDALTNNPN VGGFGQLDAE IVLQDANRVG
WLIAFVALVM LAQVMLVLKK KQVEKVQAAE MNF
