ID Q2YQL7_BRUA2 Unreviewed; 436 AA.
AC Q2YQL7;
DT 07-FEB-2006, integrated into UniProtKB/TrEMBL.
DT 07-FEB-2006, sequence version 1.
DT 27-MAR-2024, entry version 109.
DE RecName: Full=Hydrogenobyrinate a,c-diamide synthase {ECO:0000256|HAMAP-Rule:MF_00027};
DE EC=6.3.5.9 {ECO:0000256|HAMAP-Rule:MF_00027};
DE AltName: Full=Hydrogenobyrinic acid a,c-diamide synthase {ECO:0000256|HAMAP-Rule:MF_00027};
GN Name=cobB {ECO:0000256|HAMAP-Rule:MF_00027};
GN OrderedLocusNames=BAB1_1316 {ECO:0000313|EMBL:CAJ11272.1};
OS Brucella abortus (strain 2308).
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Hyphomicrobiales;
OC Brucellaceae; Brucella/Ochrobactrum group; Brucella.
OX NCBI_TaxID=359391 {ECO:0000313|EMBL:CAJ11272.1, ECO:0000313|Proteomes:UP000002719};
RN [1] {ECO:0000313|EMBL:CAJ11272.1, ECO:0000313|Proteomes:UP000002719}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=2308 {ECO:0000313|EMBL:CAJ11272.1,
RC ECO:0000313|Proteomes:UP000002719};
RX PubMed=16299333; DOI=10.1128/IAI.73.12.8353-8361.2005;
RG Microbial Genomics Group;
RG Lawrence Livermore National Laboratory;
RG and the Genome Analysis Group;
RG Oak Ridge National Laboratory;
RA Chain P., Comerci D.J., Tolmasky M.E., Larimer F.W., Malfatti S.,
RA Vergez L.M., Aguero F., Land M.L., Ugalde R.A., Garcia E.;
RT "Whole-genome analyses of speciation events in pathogenic Brucellae.";
RL Infect. Immun. 73:8353-8361(2005).
CC -!- FUNCTION: Catalyzes the ATP-dependent amidation of the two carboxylate
CC groups at positions a and c of hydrogenobyrinate, using either L-
CC glutamine or ammonia as the nitrogen source. {ECO:0000256|HAMAP-
CC Rule:MF_00027}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=2 ATP + 2 H2O + hydrogenobyrinate + 2 L-glutamine = 2 ADP + 2
CC H(+) + hydrogenobyrinate a,c-diamide + 2 L-glutamate + 2 phosphate;
CC Xref=Rhea:RHEA:12544, ChEBI:CHEBI:15377, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:29985, ChEBI:CHEBI:30616, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:58359, ChEBI:CHEBI:77873, ChEBI:CHEBI:77874,
CC ChEBI:CHEBI:456216; EC=6.3.5.9; 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 precorrin-2 (aerobic route): step 9/10.
CC {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 hydrogenobyrinate and catalyzes the
CC ultimate 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 hydrogenobyrinate are
CC activated for nucleophilic attack via formation of a phosphorylated
CC intermediate by ATP. CobB catalyzes first the amidation of the c-
CC carboxylate, and then that of the a-carboxylate. {ECO:0000256|HAMAP-
CC Rule:MF_00027}.
CC -!- SIMILARITY: Belongs to the CobB/CbiA family. {ECO:0000256|HAMAP-
CC Rule:MF_00027}.
CC -!- SIMILARITY: Belongs to the CobB/CobQ family. CobQ subfamily.
CC {ECO:0000256|ARBA:ARBA00006205}.
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DR EMBL; AM040264; CAJ11272.1; -; Genomic_DNA.
DR RefSeq; WP_002964414.1; NZ_KN046823.1.
DR AlphaFoldDB; Q2YQL7; -.
DR SMR; Q2YQL7; -.
DR STRING; 359391.BAB1_1316; -.
DR GeneID; 58775635; -.
DR KEGG; bmf:BAB1_1316; -.
DR PATRIC; fig|359391.11.peg.765; -.
DR HOGENOM; CLU_022752_0_0_5; -.
DR PhylomeDB; Q2YQL7; -.
DR UniPathway; UPA00148; UER00220.
DR Proteomes; UP000002719; Chromosome I.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0042242; F:cobyrinic acid a,c-diamide synthase activity; IEA:InterPro.
DR GO; GO:0043802; F:hydrogenobyrinic acid a,c-diamide synthase (glutamine-hydrolysing) 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 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 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:UP000002719}.
FT DOMAIN 5..188
FT /note="CobQ/CobB/MinD/ParA nucleotide binding"
FT /evidence="ECO:0000259|Pfam:PF01656"
FT DOMAIN 244..430
FT /note="CobB/CobQ-like glutamine amidotransferase"
FT /evidence="ECO:0000259|Pfam:PF07685"
FT ACT_SITE 327
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00027"
FT SITE 427
FT /note="Increases nucleophilicity of active site Cys"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00027"
SQ SEQUENCE 436 AA; 47034 MW; AED85D8A1549862B CRC64;
MKGFMIAAPA SGSGKTTVTL GLLRALKRRG EVLAPVKAGP DYIDPAYHRA ASGVDCFNLD
PWAMRPELIS ALSSRMTESG ARVLVAEGMM GLFDGAIDGK GSSADLARLL DLPVVLVVDC
ARQSHSIAAL VWGFSQFRKD VLIEGVILNR VGSPRHEAML RGALAPLGVP VLGALPRDPA
LSLPERHLGL VQADEHAGLE SFLEQAADVM EAHIDMDALQ TIWLRPKRYD AMANVARLKP
LGNRIAVARD DAFAFAYMHL FEGWRRRGAE ISFFSPLADE APKADADAIY LPGGYPELHA
QRLAGASRFR TAIGDAAARG VTVYGECGGY MVLGKTLEDA AGVHHPMLGL LPLETSFARR
KLHLGYRLLE PLGGLPWDMP LKAHEFHYAS IVREEKADRL FRVRDASGEN LGEAGLRVGS
VSGSFMHVID FSGEAA
//
