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Database: UniProt
Entry: E2ZC05_9FIRM
LinkDB: E2ZC05_9FIRM
Original site: E2ZC05_9FIRM 
ID   E2ZC05_9FIRM            Unreviewed;       458 AA.
AC   E2ZC05;
DT   11-JAN-2011, integrated into UniProtKB/TrEMBL.
DT   11-JAN-2011, sequence version 1.
DT   24-JAN-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};
GN   Name=cbiA {ECO:0000256|HAMAP-Rule:MF_00027};
GN   Synonyms=cobB {ECO:0000313|EMBL:EFQ03992.1};
GN   ORFNames=HMPREF9429_01175 {ECO:0000313|EMBL:EFQ03992.1};
OS   Megasphaera micronuciformis F0359.
OC   Bacteria; Bacillota; Negativicutes; Veillonellales; Veillonellaceae;
OC   Megasphaera.
OX   NCBI_TaxID=706434 {ECO:0000313|EMBL:EFQ03992.1, ECO:0000313|Proteomes:UP000003195};
RN   [1] {ECO:0000313|EMBL:EFQ03992.1, ECO:0000313|Proteomes:UP000003195}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=F0359 {ECO:0000313|EMBL:EFQ03992.1,
RC   ECO:0000313|Proteomes:UP000003195};
RA   Weinstock G., Sodergren E., Clifton S., Fulton L., Fulton B., Courtney L.,
RA   Fronick C., Harrison M., Strong C., Farmer C., Delahaunty K., Markovic C.,
RA   Hall O., Minx P., Tomlinson C., Mitreva M., Hou S., Chen J., Wollam A.,
RA   Pepin K.H., Johnson M., Bhonagiri V., Zhang X., Suruliraj S., Warren W.,
RA   Chinwalla A., Mardis E.R., Wilson R.K.;
RL   Submitted (AUG-2010) to the EMBL/GenBank/DDBJ databases.
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. {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 and catalyzes the ultimate
CC       synthesis of the diamide product. The ammonia produced via the
CC       glutaminase domain is probably translocated to the adjacent domain via
CC       a molecular tunnel, where it reacts with an activated intermediate.
CC       {ECO:0000256|HAMAP-Rule:MF_00027}.
CC   -!- MISCELLANEOUS: The a and c carboxylates of cobyrinate are activated for
CC       nucleophilic attack via formation of a phosphorylated intermediate by
CC       ATP. CbiA catalyzes first the amidation of the c-carboxylate, and then
CC       that of the a-carboxylate. {ECO:0000256|HAMAP-Rule:MF_00027}.
CC   -!- SIMILARITY: Belongs to the CobB/CbiA family. {ECO:0000256|HAMAP-
CC       Rule:MF_00027}.
CC   -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC       whole genome shotgun (WGS) entry which is preliminary data.
CC       {ECO:0000313|EMBL:EFQ03992.1}.
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DR   EMBL; AECS01000037; EFQ03992.1; -; Genomic_DNA.
DR   RefSeq; WP_006942300.1; NZ_GL538208.1.
DR   AlphaFoldDB; E2ZC05; -.
DR   STRING; 706434.HMPREF9429_01175; -.
DR   GeneID; 78569054; -.
DR   eggNOG; COG1797; Bacteria.
DR   HOGENOM; CLU_022752_2_0_9; -.
DR   UniPathway; UPA00148; UER00231.
DR   Proteomes; UP000003195; Unassembled WGS sequence.
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   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_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   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   Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW   Rule:MF_00027}; Reference proteome {ECO:0000313|Proteomes:UP000003195}.
FT   DOMAIN          8..163
FT                   /note="CobQ/CobB/MinD/ParA nucleotide binding"
FT                   /evidence="ECO:0000259|Pfam:PF01656"
FT   DOMAIN          252..439
FT                   /note="CobB/CobQ-like glutamine amidotransferase"
FT                   /evidence="ECO:0000259|Pfam:PF07685"
FT   ACT_SITE        334
FT                   /note="Nucleophile"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00027"
FT   SITE            433
FT                   /note="Increases nucleophilicity of active site Cys"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_00027"
SQ   SEQUENCE   458 AA;  49737 MW;  4A8E7C780BF94018 CRC64;
     MKVRVSRILL AAPSSGSGKT TVVMAVTGGF KRKGLGVQAF KVGPDYIDPM FHRAVTGVEA
     HNLDLFLCGG HGKGEDVCKE ILSRHGEKAD ICVLEGAMGF YDGLGLSSDF SAYDTACRLE
     TPVVLVVNGR GSALSTAAVL KGLAEFRRDS HVVGFIVNHI KPGVYLFYKE LWEKESGLKA
     YGCFPDLPDG ALKSRHLGLV TADEIDDLQH KAGILAEAAL EYIDLDGLAA LAEEAPPVSY
     IPKDIKAVGQ ATIAVARDEA FCFYYEDGLN ELVRYGAKIV EFSPLHDKQL PPCDGLYIGG
     GYPELYAETL SNNESMRFSI QKAVQAGLPC VGECGGYMYL AESFRHEGTV LPMVHVVPGR
     ISMTNRLVGF GYAEMTAHED NLLYSAAETM RAHEFHYSQS TDSGSAFTIT KRGRRAAGEA
     VFAKGSIFAG YPHFHFSGET KAAERFVRAC VNFRKKEK
//
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