CYC3_DESDE
ID CYC3_DESDE Reviewed; 102 AA.
AC P00134;
DT 21-JUL-1986, integrated into UniProtKB/Swiss-Prot.
DT 21-JUL-1986, sequence version 1.
DT 03-AUG-2022, entry version 87.
DE RecName: Full=Cytochrome c3;
OS Desulfovibrio desulfuricans.
OC Bacteria; Proteobacteria; Deltaproteobacteria; Desulfovibrionales;
OC Desulfovibrionaceae; Desulfovibrio.
OX NCBI_TaxID=876;
RN [1]
RP PROTEIN SEQUENCE.
RC STRAIN=DSM 1926 / NCIMB 8380 / El Agheila Z;
RX PubMed=11946159; DOI=10.1016/0014-5793(71)80483-0;
RA Ambler R.P., Bruschi M., le Gall J.;
RT "The amino acid sequence of cytochrome c-3 from Desulfovibrio desulfuricans
RT (strain El Agheila Z, NCIB 8380).";
RL FEBS Lett. 18:347-350(1971).
CC -!- FUNCTION: Participates in sulfate respiration coupled with
CC phosphorylation by transferring electrons from the enzyme dehydrogenase
CC to ferredoxin.
CC -!- COFACTOR:
CC Name=heme; Xref=ChEBI:CHEBI:30413;
CC Evidence={ECO:0000250|UniProtKB:P38554};
CC Note=Binds 4 heme c groups covalently per monomer.
CC {ECO:0000250|UniProtKB:P38554};
CC -!- SUBCELLULAR LOCATION: Periplasm.
CC -!- MISCELLANEOUS: The second heme binding site has an unusual CXXXXCH
CC motif. {ECO:0000250|UniProtKB:P38554}.
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DR PIR; A00127; CCDV3D.
DR AlphaFoldDB; P00134; -.
DR SMR; P00134; -.
DR GO; GO:0042597; C:periplasmic space; IEA:UniProtKB-SubCell.
DR GO; GO:0009055; F:electron transfer activity; IEA:InterPro.
DR GO; GO:0020037; F:heme binding; IEA:InterPro.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0009061; P:anaerobic respiration; IEA:UniProtKB-KW.
DR InterPro; IPR002322; Cyt_c_III.
DR InterPro; IPR020942; Cyt_c_III_dom.
DR InterPro; IPR036280; Multihaem_cyt_sf.
DR Pfam; PF02085; Cytochrom_CIII; 1.
DR PRINTS; PR00609; CYTOCHROMEC3.
DR SUPFAM; SSF48695; SSF48695; 1.
DR PROSITE; PS51008; MULTIHEME_CYTC; 1.
PE 1: Evidence at protein level;
KW Direct protein sequencing; Electron transport; Heme; Iron; Metal-binding;
KW Periplasm; Sulfate respiration; Transport.
FT CHAIN 1..102
FT /note="Cytochrome c3"
FT /id="PRO_0000108357"
FT BINDING 26
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="1"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 29
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="3"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 34
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="1"
FT /note="covalent"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 37
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="1"
FT /note="covalent"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 38
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="1"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 39
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="2"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 50
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="2"
FT /note="covalent"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 55
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="2"
FT /note="covalent"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 56
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="2"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 73
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="4"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 81
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="3"
FT /note="covalent"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 84
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="3"
FT /note="covalent"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 85
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="3"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 95
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="4"
FT /note="covalent"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 98
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="4"
FT /note="covalent"
FT /evidence="ECO:0000250|UniProtKB:P38554"
FT BINDING 99
FT /ligand="heme c"
FT /ligand_id="ChEBI:CHEBI:61717"
FT /ligand_label="4"
FT /ligand_part="Fe"
FT /ligand_part_id="ChEBI:CHEBI:18248"
FT /note="axial binding residue"
FT /evidence="ECO:0000250|UniProtKB:P38554"
SQ SEQUENCE 102 AA; 10913 MW; C6EA11CD4746623A CRC64;
VDAPADMVIK APAGAKVTKA PVAFSHKGHA SMDCKTCHHK WDGAGAIQPC QASGCHANTE
SKKGDDSFYM AFHERKSEKS CVGCHKSMKK GPTKCTECHP KN
