ID F6D776_METPW Unreviewed; 455 AA.
AC F6D776;
DT 27-JUL-2011, integrated into UniProtKB/TrEMBL.
DT 27-JUL-2011, sequence version 1.
DT 27-MAR-2024, entry version 64.
DE RecName: Full=Cobyrinate a,c-diamide synthase {ECO:0000256|HAMAP-Rule:MF_00027};
DE EC=6.3.5.11 {ECO:0000256|HAMAP-Rule:MF_00027};
DE AltName: Full=Cobyrinic acid a,c-diamide synthetase {ECO:0000256|HAMAP-Rule:MF_00027};
DE AltName: Full=Ni-sirohydrochlorin a,c-diamide synthase {ECO:0000256|HAMAP-Rule:MF_00027};
DE EC=6.3.5.12 {ECO:0000256|HAMAP-Rule:MF_00027};
DE AltName: Full=Ni-sirohydrochlorin a,c-diamide synthetase {ECO:0000256|HAMAP-Rule:MF_00027};
GN Name=cbiA {ECO:0000256|HAMAP-Rule:MF_00027};
GN Synonyms=cfbB {ECO:0000256|HAMAP-Rule:MF_00027};
GN OrderedLocusNames=MSWAN_0006 {ECO:0000313|EMBL:AEG17054.1};
OS Methanobacterium paludis (strain DSM 25820 / JCM 18151 / SWAN1).
OC Archaea; Euryarchaeota; Methanomada group; Methanobacteria;
OC Methanobacteriales; Methanobacteriaceae; Methanobacterium.
OX NCBI_TaxID=868131 {ECO:0000313|EMBL:AEG17054.1, ECO:0000313|Proteomes:UP000009231};
RN [1] {ECO:0000313|Proteomes:UP000009231}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 25820 / JCM 18151 / SWAN1
RC {ECO:0000313|Proteomes:UP000009231};
RA Lucas S., Han J., Lapidus A., Cheng J.-F., Goodwin L., Pitluck S.,
RA Peters L., Ovchinnikova G., Chertkov O., Han C., Tapia R., Land M.,
RA Hauser L., Kyrpides N., Ivanova N., Pagani I., Cadillo-Quiroz H.,
RA Imachi H., Zinder S., Liu W., Woyke T.;
RT "Complete sequence of Methanobacterium sp. SWAN-1.";
RL Submitted (MAY-2011) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:AEG17054.1, ECO:0000313|Proteomes:UP000009231}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 25820 / JCM 18151 / SWAN1
RC {ECO:0000313|Proteomes:UP000009231};
RX PubMed=24449792; DOI=10.1099/ijs.0.059964-0;
RA Cadillo-Quiroz H., Brauer S.L., Goodson N., Yavitt J.B., Zinder S.H.;
RT "Methanobacterium paludis sp. nov. and a novel strain of Methanobacterium
RT lacus isolated from northern peatlands.";
RL Int. J. Syst. Evol. Microbiol. 64:1473-1480(2014).
CC -!- FUNCTION: Catalyzes the ATP-dependent amidation of the two carboxylate
CC groups at positions a and c of cobyrinate, using either L-glutamine or
CC ammonia as the nitrogen source. Involved in the biosynthesis of the
CC unique nickel-containing tetrapyrrole coenzyme F430, the prosthetic
CC group of methyl-coenzyme M reductase (MCR), which plays a key role in
CC methanogenesis and anaerobic methane oxidation. Catalyzes the ATP-
CC dependent amidation of the two carboxylate groups at positions a and c
CC of Ni-sirohydrochlorin, using L-glutamine or ammonia as the nitrogen
CC source. {ECO:0000256|HAMAP-Rule:MF_00027}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 ATP + 2 H2O + 2 L-glutamine + Ni-sirohydrochlorin = 2 ADP +
CC 2 H(+) + 2 L-glutamate + Ni-sirohydrochlorin a,c-diamide + 2
CC phosphate; Xref=Rhea:RHEA:52896, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:29985, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:43474, ChEBI:CHEBI:58359, ChEBI:CHEBI:136841,
CC ChEBI:CHEBI:136887, ChEBI:CHEBI:456216; EC=6.3.5.12;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_00027};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 ATP + cob(II)yrinate + 2 H2O + 2 L-glutamine = 2 ADP +
CC cob(II)yrinate a,c diamide + 2 H(+) + 2 L-glutamate + 2 phosphate;
CC Xref=Rhea:RHEA:26289, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:29985, ChEBI:CHEBI:30616, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:58359, ChEBI:CHEBI:58537, ChEBI:CHEBI:58894,
CC ChEBI:CHEBI:456216; EC=6.3.5.11; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_00027};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000256|ARBA:ARBA00001946,
CC ECO:0000256|HAMAP-Rule:MF_00027};
CC -!- PATHWAY: Cofactor biosynthesis; adenosylcobalamin biosynthesis;
CC cob(II)yrinate a,c-diamide from sirohydrochlorin (anaerobic route):
CC step 10/10. {ECO:0000256|HAMAP-Rule:MF_00027}.
CC -!- DOMAIN: Comprises of two domains. The C-terminal domain contains the
CC binding site for glutamine and catalyzes the hydrolysis of this
CC substrate to glutamate and ammonia. The N-terminal domain is
CC anticipated to bind ATP, and cobyrinate or Ni-sirohydrochlorin, and
CC catalyzes the ultimate synthesis of the diamide product. The ammonia
CC produced via the glutaminase domain is probably translocated to the
CC adjacent domain via a molecular tunnel, where it reacts with an
CC activated intermediate. {ECO:0000256|HAMAP-Rule:MF_00027}.
CC -!- MISCELLANEOUS: The a and c carboxylates of cobyrinate and Ni-
CC sirohydrochlorin are activated for nucleophilic attack via formation of
CC a phosphorylated intermediate by ATP. CbiA catalyzes first the
CC amidation of the c-carboxylate, and then that of the a-carboxylate.
CC {ECO:0000256|HAMAP-Rule:MF_00027}.
CC -!- SIMILARITY: Belongs to the CobB/CbiA family. {ECO:0000256|HAMAP-
CC Rule:MF_00027}.
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DR EMBL; CP002772; AEG17054.1; -; Genomic_DNA.
DR RefSeq; WP_013824556.1; NC_015574.1.
DR AlphaFoldDB; F6D776; -.
DR STRING; 868131.MSWAN_0006; -.
DR GeneID; 10667482; -.
DR KEGG; mew:MSWAN_0006; -.
DR eggNOG; arCOG00106; Archaea.
DR HOGENOM; CLU_022752_2_0_2; -.
DR OrthoDB; 8896at2157; -.
DR UniPathway; UPA00148; UER00231.
DR Proteomes; UP000009231; Chromosome.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0042242; F:cobyrinic acid a,c-diamide synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0009236; P:cobalamin biosynthetic process; IEA:UniProtKB-UniRule.
DR GO; GO:0006541; P:glutamine metabolic process; IEA:UniProtKB-UniRule.
DR GO; GO:0015948; P:methanogenesis; IEA:UniProtKB-KW.
DR CDD; cd05388; CobB_N; 1.
DR CDD; cd03130; GATase1_CobB; 1.
DR Gene3D; 3.40.50.880; -; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR HAMAP; MF_00027; CobB_CbiA; 1.
DR InterPro; IPR004484; CbiA/CobB_synth.
DR InterPro; IPR029062; Class_I_gatase-like.
DR InterPro; IPR002586; CobQ/CobB/MinD/ParA_Nub-bd_dom.
DR InterPro; IPR011698; GATase_3.
DR InterPro; IPR027417; P-loop_NTPase.
DR NCBIfam; TIGR00379; cobB; 1.
DR NCBIfam; NF033195; F430_CfbB; 1.
DR PANTHER; PTHR43873; COBYRINATE A,C-DIAMIDE SYNTHASE; 1.
DR PANTHER; PTHR43873:SF1; COBYRINATE A,C-DIAMIDE SYNTHASE; 1.
DR Pfam; PF01656; CbiA; 1.
DR Pfam; PF07685; GATase_3; 1.
DR SUPFAM; SSF52317; Class I glutamine amidotransferase-like; 1.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR PROSITE; PS51274; GATASE_COBBQ; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_00027}; Cobalamin biosynthesis {ECO:0000256|HAMAP-Rule:MF_00027};
KW Glutamine amidotransferase {ECO:0000256|ARBA:ARBA00022962,
KW ECO:0000256|HAMAP-Rule:MF_00027};
KW Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_00027};
KW Magnesium {ECO:0000256|ARBA:ARBA00022842, ECO:0000256|HAMAP-Rule:MF_00027};
KW Methanogenesis {ECO:0000256|HAMAP-Rule:MF_00027};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_00027}.
FT DOMAIN 3..190
FT /note="CobQ/CobB/MinD/ParA nucleotide binding"
FT /evidence="ECO:0000259|Pfam:PF01656"
FT DOMAIN 248..438
FT /note="CobB/CobQ-like glutamine amidotransferase"
FT /evidence="ECO:0000259|Pfam:PF07685"
FT ACT_SITE 330
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00027"
FT SITE 434
FT /note="Increases nucleophilicity of active site Cys"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00027"
SQ SEQUENCE 455 AA; 50181 MW; E13FDF08E4F0AF46 CRC64;
MRVVLAGTGS AVGKTTISTG IMKALSNNYK VQPFKVGPDY IDPTYHTMAT GNRSRNLDSF
FMSKGQIRET FQRAMNISKS QLGIIEGVRG LYEGMSAVED VGSTAAMAKA LNAPVVLILN
SRSLVRSAAA IVLGFKNLDP AVRIEGVILN QVKNRNHYLK TKEAVETLVK TPVIGGIPRD
DALKVEDRHL GLVPAVERES ILRSIENWGQ VMEENIDLDA LLSIMKGDGK LPEGREKLWK
VENHKKVKIG VAMDEVFTFY YQENLEAMEA NNAELVYFSP LHDEEVPDVD ALYIGGGYPE
IFEKELESNQ SMRSSVKMVH DEERPIYAEC GGLMYLTKSI NGRDMCNVFG YNSLMTKKPQ
ALSYVIAEAV KDNIVLKSGE TFRGHEFHYS KVDMDAGKLK DLKPEFAFKI LRGKGITDSK
DGLMSKNTVA SYVHAHVAAC PGFASNFTSS AADMG
//
