ID CYC6_TRIV2 Reviewed; 111 AA.
AC Q3MDW2; P00113; P28597; P80062;
DT 21-MAR-2006, integrated into UniProtKB/Swiss-Prot.
DT 25-OCT-2005, sequence version 1.
DT 27-MAR-2024, entry version 99.
DE RecName: Full=Cytochrome c6;
DE AltName: Full=Cytochrome c-553;
DE AltName: Full=Cytochrome c553;
DE AltName: Full=Soluble cytochrome f;
DE Flags: Precursor;
GN Name=petJ; OrderedLocusNames=Ava_1200;
OS Trichormus variabilis (strain ATCC 29413 / PCC 7937) (Anabaena variabilis).
OC Bacteria; Cyanobacteriota; Cyanophyceae; Nostocales; Nostocaceae;
OC Trichormus.
OX NCBI_TaxID=240292;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=1320427; DOI=10.1007/bf00023397;
RA Bovy A.G., de Vrieze G., Borrias W.E., Weisbeek P.J.;
RT "Isolation and sequence analysis of a gene encoding a basic cytochrome c-
RT 553 from the cyanobacterium Anabaena SP. PCC 7937.";
RL Plant Mol. Biol. 19:491-492(1992).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29413 / PCC 7937;
RX PubMed=25197444; DOI=10.4056/sigs.3899418;
RA Thiel T., Pratte B.S., Zhong J., Goodwin L., Copeland A., Lucas S., Han C.,
RA Pitluck S., Land M.L., Kyrpides N.C., Woyke T.;
RT "Complete genome sequence of Anabaena variabilis ATCC 29413.";
RL Stand. Genomic Sci. 9:562-573(2014).
CC -!- FUNCTION: Functions as an electron carrier between membrane-bound
CC cytochrome b6-f and photosystem I in oxygenic photosynthesis.
CC {ECO:0000250}.
CC -!- SUBUNIT: Monomer. {ECO:0000250}.
CC -!- SUBCELLULAR LOCATION: Cellular thylakoid lumen {ECO:0000305}.
CC -!- PTM: Binds 1 heme c group covalently per subunit. {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the cytochrome c family. PetJ subfamily.
CC {ECO:0000305}.
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DR EMBL; X63194; CAA44876.1; -; Genomic_DNA.
DR EMBL; CP000117; ABA20824.1; -; Genomic_DNA.
DR AlphaFoldDB; Q3MDW2; -.
DR SMR; Q3MDW2; -.
DR STRING; 240292.Ava_1200; -.
DR KEGG; ava:Ava_1200; -.
DR eggNOG; COG2010; Bacteria.
DR HOGENOM; CLU_101159_1_0_3; -.
DR Proteomes; UP000002533; Chromosome.
DR GO; GO:0031979; C:plasma membrane-derived thylakoid lumen; 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; 1.10.760.10; Cytochrome c-like domain; 1.
DR HAMAP; MF_00594; Cytc_PetJ; 1.
DR InterPro; IPR009056; Cyt_c-like_dom.
DR InterPro; IPR036909; Cyt_c-like_dom_sf.
DR InterPro; IPR023655; Cyt_C6.
DR InterPro; IPR008168; Cyt_C_IC.
DR PANTHER; PTHR34688:SF4; CYTOCHROME C-553; 1.
DR PANTHER; PTHR34688; CYTOCHROME C6, CHLOROPLASTIC; 1.
DR Pfam; PF13442; Cytochrome_CBB3; 1.
DR PRINTS; PR00605; CYTCHROMECIC.
DR SUPFAM; SSF46626; Cytochrome c; 1.
DR PROSITE; PS51007; CYTC; 1.
PE 3: Inferred from homology;
KW Electron transport; Heme; Iron; Metal-binding; Photosynthesis; Signal;
KW Thylakoid; Transport.
FT SIGNAL 1..26
FT /evidence="ECO:0000250"
FT CHAIN 27..111
FT /note="Cytochrome c6"
FT /id="PRO_0000023856"
FT BINDING 39
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000250"
FT BINDING 42
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /note="covalent"
FT /evidence="ECO:0000250"
FT BINDING 43
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000250"
FT BINDING 83
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000250"
SQ SEQUENCE 111 AA; 11840 MW; 551FDF473ED2CF9F CRC64;
MKKIFSLVLL GIALFTFAFS SPALAADVAN GAKIFSANCA SCHAGGKNLV QAQKTLKKED
LEKFGMYSAE AIIAQVTNGK NAMPAFKGRL KPDQIEDVAA YVLGQADKSW K
//
