ID A0A143Q8K9_9NOCA Unreviewed; 466 AA.
AC A0A143Q8K9;
DT 08-JUN-2016, integrated into UniProtKB/TrEMBL.
DT 08-JUN-2016, sequence version 1.
DT 27-MAR-2024, entry version 36.
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_3 {ECO:0000313|EMBL:AMY18792.1};
GN Synonyms=cobB {ECO:0000256|HAMAP-Rule:MF_00027};
GN ORFNames=A3Q40_01402 {ECO:0000313|EMBL:AMY18792.1};
OS Rhodococcus sp. PBTS 1.
OC Bacteria; Actinomycetota; Actinomycetes; Mycobacteriales; Nocardiaceae;
OC Rhodococcus.
OX NCBI_TaxID=1653478 {ECO:0000313|EMBL:AMY18792.1, ECO:0000313|Proteomes:UP000076180};
RN [1] {ECO:0000313|EMBL:AMY18792.1, ECO:0000313|Proteomes:UP000076180}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PBTS 1 {ECO:0000313|EMBL:AMY18792.1,
RC ECO:0000313|Proteomes:UP000076180};
RX PubMed=27284129;
RA Stamler R.A., Vereecke D., Zhang Y., Schilkey F., Devitt N., Randall J.J.;
RT "Complete Genome and Plasmid Sequences for Rhodococcus fascians D188 and
RT Draft Sequences for Rhodococcus Isolates PBTS 1 and PBTS 2.";
RL Genome Announc. 4:0-0(2016).
RN [2] {ECO:0000313|Proteomes:UP000076180}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=PBTS 1 {ECO:0000313|Proteomes:UP000076180};
RA Stamer R., Vereecke D., Zhang Y., Schilkey F., Devitt N., Randall J.;
RT "Complete Genome and Plasmid Sequences for Rhodococcus fascians D188 and
RT Draft Sequences for Rhodococcus spp. Isolates PBTS 1 and PBTS 2.";
RL Submitted (APR-2016) 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 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}.
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DR EMBL; CP015219; AMY18792.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A143Q8K9; -.
DR STRING; 1653478.A3Q40_01402; -.
DR KEGG; rhu:A3Q40_01402; -.
DR PATRIC; fig|1653478.3.peg.1406; -.
DR UniPathway; UPA00148; UER00220.
DR Proteomes; UP000076180; Chromosome.
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 CDD; cd05388; CobB_N; 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:UP000076180}.
FT DOMAIN 8..201
FT /note="CobQ/CobB/MinD/ParA nucleotide binding"
FT /evidence="ECO:0000259|Pfam:PF01656"
FT DOMAIN 264..445
FT /note="CobB/CobQ-like glutamine amidotransferase"
FT /evidence="ECO:0000259|Pfam:PF07685"
FT ACT_SITE 346
FT /note="Nucleophile"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00027"
FT SITE 443
FT /note="Increases nucleophilicity of active site Cys"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00027"
SQ SEQUENCE 466 AA; 47407 MW; 1ED7095148A4BDD6 CRC64;
MTESLAAVVV AAPSSGSGKT TIATGIMGAL RRAGHRVAPF KVGPDYIDPG YHAVAAGRPG
RNLDAVMVGV DALVPMVRWG ARDCDIAVVE GVMGLFDGRI APDDTAAVGP AAEGSTAAVA
TTIGAPVILV IDARGQSQSV GAVVHGFATH DPGVRLGGVI LNKVGSARHE AVLRQACERV
GVPVIGAIPR SGALDVPSRH LGLVTAAEHG TAAVAAVDAM AALVARHVDL DAVVRLGRTA
SVPAATPWSP DAAVGEVPSG PRPTIAVAGG PAFTFGYTEH QEVLVAAGAD VVTIDPRHDR
LPDGVAGLVV PGGFPELHAE DLAANEALST DVRALADRGA PIHGECAGLL YLAAALDGHA
MAGVFDLDAE FGSGLTLGYR DAVALTDSVL FDAGTRVTGH EFHRTRVVRA GDHAPAWGWR
RDGVTVREGA VSVSGRVHAS YLHTHPVATA SALTRFVGAA RSVRFG
//
