ID H6NGJ0_9BACL Unreviewed; 475 AA.
AC H6NGJ0;
DT 18-APR-2012, integrated into UniProtKB/TrEMBL.
DT 18-APR-2012, sequence version 1.
DT 27-MAR-2024, entry version 61.
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 ORFNames=PM3016_6442 {ECO:0000313|EMBL:AFC33072.1};
OS Paenibacillus mucilaginosus 3016.
OC Bacteria; Bacillota; Bacilli; Bacillales; Paenibacillaceae; Paenibacillus.
OX NCBI_TaxID=1116391 {ECO:0000313|EMBL:AFC33072.1, ECO:0000313|Proteomes:UP000007523};
RN [1] {ECO:0000313|EMBL:AFC33072.1, ECO:0000313|Proteomes:UP000007523}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=3016 {ECO:0000313|EMBL:AFC33072.1,
RC ECO:0000313|Proteomes:UP000007523};
RX PubMed=22535950; DOI=10.1128/JB.00323-12;
RA Ma M., Wang Z., Li L., Jiang X., Guan D., Cao F., Chen H., Wang X.,
RA Shen D., Du B., Li J.;
RT "Complete Genome Sequence of Paenibacillus mucilaginosus 3016, a Bacterium
RT Functional as Microbial Fertilizer.";
RL J. Bacteriol. 194:2777-2778(2012).
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}.
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DR EMBL; CP003235; AFC33072.1; -; Genomic_DNA.
DR RefSeq; WP_014372184.1; NC_016935.1.
DR AlphaFoldDB; H6NGJ0; -.
DR STRING; 1116391.PM3016_6442; -.
DR KEGG; pmq:PM3016_6442; -.
DR HOGENOM; CLU_022752_2_0_9; -.
DR UniPathway; UPA00148; UER00231.
DR Proteomes; UP000007523; 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 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; 2.
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 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:UP000007523}.
FT DOMAIN 10..196
FT /note="CobQ/CobB/MinD/ParA nucleotide binding"
FT /evidence="ECO:0000259|Pfam:PF01656"
FT DOMAIN 256..448
FT /note="CobB/CobQ-like glutamine amidotransferase"
FT /evidence="ECO:0000259|Pfam:PF07685"
FT ACT_SITE 338
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00027"
FT SITE 442
FT /note="Increases nucleophilicity of active site Cys"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00027"
SQ SEQUENCE 475 AA; 51191 MW; 9C4D756A448F92F3 CRC64;
MSDRKGRPGL IIAGTGSGAG KTTVTIGLMA ALQRRGLRVQ GFKCGPDYID PTYHRAVTGR
ASRNLDSWML SSEGVREIYQ RAGADADISI IEGVMGFYDG KEATSNRGST AEISLELGVP
VLLVVNCQSM ARSCAAIVKG FQLLDPRVRI AAVFANKVGS EGHYRIVKDA VEAECGIPVI
GYMTRQEELA LPERHLGLVP SIERGDLNAF FDLLADRMEA NVGLDRLLEL AAGSDPLPEE
EPRLFAPPAK TYPVKLAVAH DAAFHFYYPE NLELLELHGA ELAYFSPLGG EPLPEGAQGL
YLGGGFPEEF AERLSRQTDT AESIRRAVRQ GLPTLAECGG YMYLTESITG TDGETHPMLG
LVPGRVTMQR KLAALGLREV KGAEGNFLFE GGLTARGHEF HYSAYELPES AAQLPPAYET
SGLRGTKPEG GLLYSVVAGY THLHFGSQPK LVERWLQRCA AFEPAVPAQG EPSAG
//
