ID A0LQK8_SYNFM Unreviewed; 487 AA.
AC A0LQK8;
DT 12-DEC-2006, integrated into UniProtKB/TrEMBL.
DT 12-DEC-2006, sequence version 1.
DT 24-JAN-2024, entry version 102.
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 OrderedLocusNames=Sfum_4044 {ECO:0000313|EMBL:ABK19710.1};
OS Syntrophobacter fumaroxidans (strain DSM 10017 / MPOB).
OC Bacteria; Thermodesulfobacteriota; Syntrophobacteria; Syntrophobacterales;
OC Syntrophobacteraceae; Syntrophobacter.
OX NCBI_TaxID=335543 {ECO:0000313|EMBL:ABK19710.1, ECO:0000313|Proteomes:UP000001784};
RN [1] {ECO:0000313|EMBL:ABK19710.1, ECO:0000313|Proteomes:UP000001784}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 10017 / MPOB {ECO:0000313|Proteomes:UP000001784};
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., Pitluck S., Goltsman E.G.,
RA Martinez M., Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N.,
RA Kim E., Boone D.R., Brockman F., Culley D., Ferry J., Gunsalus R.,
RA McInerney M.J., Morrison M., Plugge C., Rohlin L., Scholten J., Sieber J.,
RA Stams A.J.M., Worm P., Henstra A.M., Richardson P.;
RT "Complete sequence of Syntrophobacter fumaroxidans MPOB.";
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: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; CP000478; ABK19710.1; -; Genomic_DNA.
DR AlphaFoldDB; A0LQK8; -.
DR STRING; 335543.Sfum_4044; -.
DR KEGG; sfu:Sfum_4044; -.
DR eggNOG; COG1797; Bacteria.
DR HOGENOM; CLU_022752_2_1_7; -.
DR InParanoid; A0LQK8; -.
DR OMA; MYLTNSI; -.
DR UniPathway; UPA00148; UER00231.
DR Proteomes; UP000001784; 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; 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:UP000001784}.
FT DOMAIN 11..194
FT /note="CobQ/CobB/MinD/ParA nucleotide binding"
FT /evidence="ECO:0000259|Pfam:PF01656"
FT DOMAIN 259..447
FT /note="CobB/CobQ-like glutamine amidotransferase"
FT /evidence="ECO:0000259|Pfam:PF07685"
FT ACT_SITE 340
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 487 AA; 53209 MW; E56C085BDA22B20F CRC64;
MFSMTFEKPR LMIAALRGGS GKTVVSLGLA AAWRLYKGLR VVPFKKGPDY IDAAWLSAAA
RHACYNLDPF LMKPDEMLCS FLRRANKGDG AVIEGNRGLY DGVDVQGSYS TAELSKLLRT
PVIIVLDATK VTRTAAALVL GCQHLDPEVG IAGVILNQVA GRRHERVLRG AIERYCRIPV
LGVVPKESTN FFPERHLGLV PPQEAGDISG AVEFAAGRMK ECIDLDALWD IASTAEPLGW
PTRMADLQAG AGMRGPVSIG VIRDSAFQFY YPENIEALEE RGAAIVEVNS LADRPLPDVD
ALYIGGGFPE THLERLSLNE TFRKSLKDRI EIGLPVYAEC GGLMYLCRGI LQGGNSFPMT
GVFPFDVVLG SRPQGHGYTV MECVRGNPFL GVGQSCKGHE FHYSRIIGPA RDFPFVFRLE
KGHGIVAGWD GMCYKNVLAS YSHIHAVGHD CWAEGLVRAA LCFRQAKAHG SIDNEWTHEV
CRESVVS
//