CFBA_META3
ID CFBA_META3 Reviewed; 143 AA.
AC A6UWT5;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 21-AUG-2007, sequence version 1.
DT 03-AUG-2022, entry version 74.
DE RecName: Full=Sirohydrochlorin cobaltochelatase {ECO:0000255|HAMAP-Rule:MF_00785};
DE EC=4.99.1.3 {ECO:0000255|HAMAP-Rule:MF_00785};
DE AltName: Full=CbiXS {ECO:0000255|HAMAP-Rule:MF_00785};
DE AltName: Full=Sirohydrochlorin nickelchelatase {ECO:0000255|HAMAP-Rule:MF_00785};
DE EC=4.99.1.11 {ECO:0000255|HAMAP-Rule:MF_00785};
GN Name=cbiX {ECO:0000255|HAMAP-Rule:MF_00785};
GN Synonyms=cfbA {ECO:0000255|HAMAP-Rule:MF_00785};
GN OrderedLocusNames=Maeo_1381;
OS Methanococcus aeolicus (strain ATCC BAA-1280 / DSM 17508 / OCM 812 /
OS Nankai-3).
OC Archaea; Euryarchaeota; Methanomada group; Methanococci; Methanococcales;
OC Methanococcaceae; Methanococcus.
OX NCBI_TaxID=419665;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-1280 / DSM 17508 / OCM 812 / Nankai-3;
RG US DOE Joint Genome Institute;
RA Copeland A., Lucas S., Lapidus A., Barry K., Glavina del Rio T., Dalin E.,
RA Tice H., Pitluck S., Chain P., Malfatti S., Shin M., Vergez L., Schmutz J.,
RA Larimer F., Land M., Hauser L., Kyrpides N., Lykidis A.,
RA Sieprawska-Lupa M., Whitman W.B., Richardson P.;
RT "Complete sequence of Methanococcus aeolicus Nankai-3.";
RL Submitted (JUN-2007) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the insertion of Co(2+) into sirohydrochlorin as
CC part of the anaerobic pathway to cobalamin biosynthesis. Involved in
CC the biosynthesis of the unique nickel-containing tetrapyrrole coenzyme
CC F430, the prosthetic group of methyl-coenzyme M reductase (MCR), which
CC plays a key role in methanogenesis and anaerobic methane oxidation.
CC Catalyzes the insertion of Ni(2+) into sirohydrochlorin to yield Ni-
CC sirohydrochlorin. {ECO:0000255|HAMAP-Rule:MF_00785}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=Co-sirohydrochlorin + 2 H(+) = Co(2+) + sirohydrochlorin;
CC Xref=Rhea:RHEA:15893, ChEBI:CHEBI:15378, ChEBI:CHEBI:48828,
CC ChEBI:CHEBI:58351, ChEBI:CHEBI:60049; EC=4.99.1.3;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00785};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 H(+) + Ni-sirohydrochlorin = Ni(2+) + sirohydrochlorin;
CC Xref=Rhea:RHEA:52796, ChEBI:CHEBI:15378, ChEBI:CHEBI:49786,
CC ChEBI:CHEBI:58351, ChEBI:CHEBI:136841; EC=4.99.1.11;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00785};
CC -!- PATHWAY: Cofactor biosynthesis; adenosylcobalamin biosynthesis;
CC cob(II)yrinate a,c-diamide from sirohydrochlorin (anaerobic route):
CC step 1/10. {ECO:0000255|HAMAP-Rule:MF_00785}.
CC -!- SUBUNIT: Homotetramer; dimer of dimers. {ECO:0000255|HAMAP-
CC Rule:MF_00785}.
CC -!- SIMILARITY: Belongs to the CbiX family. CbiXS subfamily.
CC {ECO:0000255|HAMAP-Rule:MF_00785}.
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DR EMBL; CP000743; ABR56957.1; -; Genomic_DNA.
DR RefSeq; WP_011974089.1; NC_009635.1.
DR AlphaFoldDB; A6UWT5; -.
DR SMR; A6UWT5; -.
DR STRING; 419665.Maeo_1381; -.
DR EnsemblBacteria; ABR56957; ABR56957; Maeo_1381.
DR GeneID; 5326995; -.
DR KEGG; mae:Maeo_1381; -.
DR eggNOG; arCOG02246; Archaea.
DR HOGENOM; CLU_065901_2_1_2; -.
DR OMA; HEHEKLE; -.
DR OrthoDB; 93992at2157; -.
DR UniPathway; UPA00148; UER00223.
DR Proteomes; UP000001106; Chromosome.
DR GO; GO:0050897; F:cobalt ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016151; F:nickel cation binding; IEA:UniProtKB-UniRule.
DR GO; GO:0016852; F:sirohydrochlorin cobaltochelatase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0019251; P:anaerobic cobalamin biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0015948; P:methanogenesis; IEA:UniProtKB-KW.
DR HAMAP; MF_00785; CbiX; 1.
DR InterPro; IPR002762; CbiX-like.
DR InterPro; IPR023652; SiroHydchlorin_Cochelatase.
DR Pfam; PF01903; CbiX; 1.
PE 3: Inferred from homology;
KW Cobalamin biosynthesis; Cobalt; Lyase; Metal-binding; Methanogenesis;
KW Nickel; Reference proteome.
FT CHAIN 1..143
FT /note="Sirohydrochlorin cobaltochelatase"
FT /id="PRO_1000046840"
FT ACT_SITE 9
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00785"
FT BINDING 9
FT /ligand="Co(2+)"
FT /ligand_id="ChEBI:CHEBI:48828"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00785"
FT BINDING 9
FT /ligand="Ni(2+)"
FT /ligand_id="ChEBI:CHEBI:49786"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00785"
FT BINDING 45
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00785"
FT BINDING 70..75
FT /ligand="substrate"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00785"
FT BINDING 75
FT /ligand="Co(2+)"
FT /ligand_id="ChEBI:CHEBI:48828"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00785"
FT BINDING 75
FT /ligand="Ni(2+)"
FT /ligand_id="ChEBI:CHEBI:49786"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00785"
SQ SEQUENCE 143 AA; 16090 MW; B3D6F965BF072BAE CRC64;
MEALVLLGHG SRLPYSKEIV GKVAEKIKEK NIYDIVEIGM MEFNEPTIPQ TINKVIAEGA
KKIIIVPVFL AHGNHTKRDI PQILGLIECE EHHHEGEGGH HHHHHHHHGE KIEVPEGVEI
IYRDPMGADD RVVDIVLDRA KGN
