CBIA_PELPD
ID CBIA_PELPD Reviewed; 463 AA.
AC A1AT17;
DT 20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT 23-JAN-2007, sequence version 1.
DT 25-MAY-2022, entry version 89.
DE RecName: Full=Cobyrinate a,c-diamide synthase {ECO:0000255|HAMAP-Rule:MF_00027};
DE EC=6.3.5.11 {ECO:0000255|HAMAP-Rule:MF_00027};
DE AltName: Full=Cobyrinic acid a,c-diamide synthetase {ECO:0000255|HAMAP-Rule:MF_00027};
GN Name=cbiA {ECO:0000255|HAMAP-Rule:MF_00027}; OrderedLocusNames=Ppro_2890;
OS Pelobacter propionicus (strain DSM 2379 / NBRC 103807 / OttBd1).
OC Bacteria; Proteobacteria; Deltaproteobacteria; Desulfuromonadales;
OC Desulfuromonadaceae; Pelobacter.
OX NCBI_TaxID=338966;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 2379 / NBRC 103807 / OttBd1;
RG US DOE Joint Genome Institute;
RA Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA Glavina del Rio T., Hammon N., Israni S., Dalin E., Tice H., Pitluck S.,
RA Saunders E., Brettin T., Bruce D., Han C., Tapia R., Schmutz J.,
RA Larimer F., Land M., Hauser L., Kyrpides N., Kim E., Lovley D.,
RA Richardson P.;
RT "Complete sequence of chromosome of Pelobacter propionicus DSM 2379.";
RL Submitted (OCT-2006) 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:0000255|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:0000255|HAMAP-
CC Rule:MF_00027};
CC -!- COFACTOR:
CC Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC Evidence={ECO:0000255|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:0000255|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:0000255|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:0000255|HAMAP-Rule:MF_00027}.
CC -!- SIMILARITY: Belongs to the CobB/CbiA family. {ECO:0000255|HAMAP-
CC Rule:MF_00027}.
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DR EMBL; CP000482; ABL00488.1; -; Genomic_DNA.
DR RefSeq; WP_011736723.1; NC_008609.1.
DR AlphaFoldDB; A1AT17; -.
DR SMR; A1AT17; -.
DR STRING; 338966.Ppro_2890; -.
DR EnsemblBacteria; ABL00488; ABL00488; Ppro_2890.
DR KEGG; ppd:Ppro_2890; -.
DR eggNOG; COG1797; Bacteria.
DR HOGENOM; CLU_022752_2_0_7; -.
DR OMA; QPFKCGP; -.
DR OrthoDB; 692368at2; -.
DR UniPathway; UPA00148; UER00231.
DR Proteomes; UP000006732; 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-KW.
DR Gene3D; 3.40.50.300; -; 2.
DR Gene3D; 3.40.50.880; -; 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 PANTHER; PTHR43873; PTHR43873; 1.
DR Pfam; PF01656; CbiA; 1.
DR Pfam; PF07685; GATase_3; 1.
DR SUPFAM; SSF52317; SSF52317; 1.
DR SUPFAM; SSF52540; SSF52540; 1.
DR TIGRFAMs; TIGR00379; cobB; 1.
DR PROSITE; PS51274; GATASE_COBBQ; 1.
PE 3: Inferred from homology;
KW ATP-binding; Cobalamin biosynthesis; Glutamine amidotransferase; Ligase;
KW Magnesium; Nucleotide-binding; Reference proteome.
FT CHAIN 1..463
FT /note="Cobyrinate a,c-diamide synthase"
FT /id="PRO_1000074393"
FT DOMAIN 250..445
FT /note="GATase cobBQ-type"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00027"
FT ACT_SITE 333
FT /note="Nucleophile"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00027"
FT SITE 437
FT /note="Increases nucleophilicity of active site Cys"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00027"
SQ SEQUENCE 463 AA; 48879 MW; 7843322AFFDD76FC CRC64;
MSINGFLIAA PQSGSGKTTI SLAIMAALRR RGLVVAPFKC GPDFIDPGYH RMASGRASIN
LDGWMCPESF VAETFRLHAE AADVAVIEAV MGLFDGLGAS PLQGSSAQIA AICGAPVVLV
VNARGMAASA AALVKGFAEF DPDVRLAGVI FNNVGSAGHA ELLARVMASA LPEIALLGCI
PRDEALAIPS RHLGLVTAED NPLPPEYLDR LADLAEKHLD LAGLAGLRIT PRSVGASLSR
TNGGGMLPVR IAVARDAAFC FVYQDNLRLL REAGGELLFF SPLADGALPE GISGIYLPGG
YPELYAERLA VNVPMLDAIR GAARDGMPLY AECGGFIYLT RGMEDSQGAP LADFAGIFPV
RARMLPKRKA LGYRQVECLS VSILGPAGET ARGHEFHYSE ICEMPVDVTR TYSVTRQGAF
LGQEGYCLSN CLASYVHLHF GSNPCLAPSL VAACRKFAAT RRS
