ID A0A0C5BDV5_9MICO Unreviewed; 579 AA.
AC A0A0C5BDV5;
DT 29-APR-2015, integrated into UniProtKB/TrEMBL.
DT 29-APR-2015, sequence version 1.
DT 24-JAN-2024, entry version 47.
DE RecName: Full=CTP synthase {ECO:0000256|HAMAP-Rule:MF_01227};
DE EC=6.3.4.2 {ECO:0000256|HAMAP-Rule:MF_01227};
DE AltName: Full=Cytidine 5'-triphosphate synthase {ECO:0000256|HAMAP-Rule:MF_01227};
DE AltName: Full=Cytidine triphosphate synthetase {ECO:0000256|HAMAP-Rule:MF_01227};
DE Short=CTP synthetase {ECO:0000256|HAMAP-Rule:MF_01227};
DE Short=CTPS {ECO:0000256|HAMAP-Rule:MF_01227};
DE AltName: Full=UTP--ammonia ligase {ECO:0000256|HAMAP-Rule:MF_01227};
GN Name=pyrG {ECO:0000256|HAMAP-Rule:MF_01227};
GN ORFNames=C5C51_04445 {ECO:0000313|EMBL:PPI15069.1}, VT73_09760
GN {ECO:0000313|EMBL:KKM44760.1};
OS Rathayibacter toxicus.
OC Bacteria; Actinomycetota; Actinomycetes; Micrococcales; Microbacteriaceae;
OC Rathayibacter.
OX NCBI_TaxID=145458 {ECO:0000313|EMBL:KKM44760.1, ECO:0000313|Proteomes:UP000052979};
RN [1] {ECO:0000313|EMBL:KKM44760.1, ECO:0000313|Proteomes:UP000052979}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=FH142 {ECO:0000313|EMBL:KKM44760.1,
RC ECO:0000313|Proteomes:UP000052979};
RG Consortium for Microbial Forensics and Genomics (microFORGE);
RA Knight B.M., Roberts D.P., Lin D., Hari K., Fletcher J., Melcher U.,
RA Blagden T., Luster D.G., Sechler A.J., Schneider W.L., Winegar R.A.;
RT "Draft genome sequence of Rathayibacter toxicus strain FH-142 (AKA 70134 or
RT CS 32), a Western Australian isolate.";
RL Submitted (APR-2015) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|EMBL:PPI15069.1, ECO:0000313|Proteomes:UP000237966}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=FH99 {ECO:0000313|EMBL:PPI15069.1,
RC ECO:0000313|Proteomes:UP000237966};
RA Davis E.W.II., Tabima J.F., Weisberg A.J., Lopes L.D., Wiseman M.S.,
RA Wiseman M.S., Pupko T., Belcher M.S., Sechler A.J., Tancos M.A.,
RA Schroeder B.K., Murray T.D., Luster D.G., Schneider W.L., Rogers E.,
RA Andreote F.D., Grunwald N.J., Putnam M.L., Chang J.H.;
RT "Bacteriophage NCPPB3778 and a type I-E CRISPR drive the evolution of the
RT US Biological Select Agent, Rathayibacter toxicus.";
RL Submitted (FEB-2018) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the ATP-dependent amination of UTP to CTP with
CC either L-glutamine or ammonia as the source of nitrogen. Regulates
CC intracellular CTP levels through interactions with the four
CC ribonucleotide triphosphates. {ECO:0000256|HAMAP-Rule:MF_01227}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + H2O + L-glutamine + UTP = ADP + CTP + 2 H(+) + L-
CC glutamate + phosphate; Xref=Rhea:RHEA:26426, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:15378, ChEBI:CHEBI:29985, ChEBI:CHEBI:30616,
CC ChEBI:CHEBI:37563, ChEBI:CHEBI:43474, ChEBI:CHEBI:46398,
CC ChEBI:CHEBI:58359, ChEBI:CHEBI:456216; EC=6.3.4.2;
CC Evidence={ECO:0000256|ARBA:ARBA00000314, ECO:0000256|HAMAP-
CC Rule:MF_01227};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + NH4(+) + UTP = ADP + CTP + 2 H(+) + phosphate;
CC Xref=Rhea:RHEA:16597, ChEBI:CHEBI:15378, ChEBI:CHEBI:28938,
CC ChEBI:CHEBI:30616, ChEBI:CHEBI:37563, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:46398, ChEBI:CHEBI:456216; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_01227};
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + L-glutamine = L-glutamate + NH4(+);
CC Xref=Rhea:RHEA:15889, ChEBI:CHEBI:15377, ChEBI:CHEBI:28938,
CC ChEBI:CHEBI:29985, ChEBI:CHEBI:58359; Evidence={ECO:0000256|HAMAP-
CC Rule:MF_01227};
CC -!- ACTIVITY REGULATION: Allosterically activated by GTP, when glutamine is
CC the substrate; GTP has no effect on the reaction when ammonia is the
CC substrate. The allosteric effector GTP functions by stabilizing the
CC protein conformation that binds the tetrahedral intermediate(s) formed
CC during glutamine hydrolysis. Inhibited by the product CTP, via
CC allosteric rather than competitive inhibition. {ECO:0000256|HAMAP-
CC Rule:MF_01227}.
CC -!- PATHWAY: Pyrimidine metabolism; CTP biosynthesis via de novo pathway;
CC CTP from UDP: step 2/2. {ECO:0000256|ARBA:ARBA00005171,
CC ECO:0000256|HAMAP-Rule:MF_01227}.
CC -!- SUBUNIT: Homotetramer. {ECO:0000256|HAMAP-Rule:MF_01227}.
CC -!- MISCELLANEOUS: CTPSs have evolved a hybrid strategy for distinguishing
CC between UTP and CTP. The overlapping regions of the product feedback
CC inhibitory and substrate sites recognize a common feature in both
CC compounds, the triphosphate moiety. To differentiate isosteric
CC substrate and product pyrimidine rings, an additional pocket far from
CC the expected kinase/ligase catalytic site, specifically recognizes the
CC cytosine and ribose portions of the product inhibitor.
CC {ECO:0000256|HAMAP-Rule:MF_01227}.
CC -!- SIMILARITY: Belongs to the CTP synthase family.
CC {ECO:0000256|ARBA:ARBA00007533, ECO:0000256|HAMAP-Rule:MF_01227}.
CC -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_01227}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KKM44760.1}.
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DR EMBL; LBFI01000053; KKM44760.1; -; Genomic_DNA.
DR EMBL; PSWU01000007; PPI15069.1; -; Genomic_DNA.
DR RefSeq; WP_027692018.1; NZ_PSXM01000008.1.
DR AlphaFoldDB; A0A0C5BDV5; -.
DR STRING; 145458.APU90_01795; -.
DR GeneID; 66874524; -.
DR KEGG; rtc:APU90_01795; -.
DR KEGG; rtx:TI83_04680; -.
DR PATRIC; fig|145458.7.peg.1076; -.
DR eggNOG; COG0504; Bacteria.
DR OrthoDB; 9801107at2; -.
DR UniPathway; UPA00159; UER00277.
DR Proteomes; UP000052979; Unassembled WGS sequence.
DR Proteomes; UP000237966; Unassembled WGS sequence.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR GO; GO:0003883; F:CTP synthase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR GO; GO:0044210; P:'de novo' CTP biosynthetic process; IEA:UniProtKB-UniPathway.
DR GO; GO:0006541; P:glutamine metabolic process; IEA:UniProtKB-UniRule.
DR CDD; cd03113; CTPS_N; 1.
DR CDD; cd01746; GATase1_CTP_Synthase; 1.
DR Gene3D; 3.40.50.880; -; 1.
DR Gene3D; 3.40.50.300; P-loop containing nucleotide triphosphate hydrolases; 1.
DR HAMAP; MF_01227; PyrG; 1.
DR InterPro; IPR029062; Class_I_gatase-like.
DR InterPro; IPR004468; CTP_synthase.
DR InterPro; IPR017456; CTP_synthase_N.
DR InterPro; IPR017926; GATASE.
DR InterPro; IPR033828; GATase1_CTP_Synthase.
DR InterPro; IPR027417; P-loop_NTPase.
DR NCBIfam; TIGR00337; PyrG; 1.
DR PANTHER; PTHR11550; CTP SYNTHASE; 1.
DR PANTHER; PTHR11550:SF0; CTP SYNTHASE-RELATED; 1.
DR Pfam; PF06418; CTP_synth_N; 1.
DR Pfam; PF00117; GATase; 1.
DR SUPFAM; SSF52317; Class I glutamine amidotransferase-like; 1.
DR SUPFAM; SSF52540; P-loop containing nucleoside triphosphate hydrolases; 1.
DR PROSITE; PS51273; GATASE_TYPE_1; 1.
PE 3: Inferred from homology;
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_01227};
KW Glutamine amidotransferase {ECO:0000256|ARBA:ARBA00022962,
KW ECO:0000256|HAMAP-Rule:MF_01227};
KW Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_01227};
KW Magnesium {ECO:0000256|HAMAP-Rule:MF_01227};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_01227};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_01227};
KW Pyrimidine biosynthesis {ECO:0000256|ARBA:ARBA00022975, ECO:0000256|HAMAP-
KW Rule:MF_01227}; Reference proteome {ECO:0000313|Proteomes:UP000052979}.
FT DOMAIN 28..293
FT /note="CTP synthase N-terminal"
FT /evidence="ECO:0000259|Pfam:PF06418"
FT DOMAIN 328..558
FT /note="Glutamine amidotransferase"
FT /evidence="ECO:0000259|Pfam:PF00117"
FT REGION 1..293
FT /note="Amidoligase domain"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT ACT_SITE 408
FT /note="Nucleophile"
FT /evidence="ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 408
FT /note="Nucleophile; for glutamine hydrolysis"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT ACT_SITE 539
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
FT ACT_SITE 541
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227,
FT ECO:0000256|PROSITE-ProRule:PRU00605"
FT BINDING 38
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /ligand_note="allosteric inhibitor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 38
FT /ligand="UTP"
FT /ligand_id="ChEBI:CHEBI:46398"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 39..44
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 96
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 96
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 167
FT /ligand="Mg(2+)"
FT /ligand_id="ChEBI:CHEBI:18420"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 174..176
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /ligand_note="allosteric inhibitor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 214..219
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /ligand_note="allosteric inhibitor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 214..219
FT /ligand="UTP"
FT /ligand_id="ChEBI:CHEBI:46398"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 250
FT /ligand="CTP"
FT /ligand_id="ChEBI:CHEBI:37563"
FT /ligand_note="allosteric inhibitor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 250
FT /ligand="UTP"
FT /ligand_id="ChEBI:CHEBI:46398"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 266..268
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 381
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 409..412
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 432
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
FT BINDING 492
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_01227"
SQ SEQUENCE 579 AA; 62630 MW; D76A11A1E1DBE960 CRC64;
MADITDTGSY SSDSFLVGQA SSSAPVTKHI FVTGGVVSSL GKGLTAASLG NLLTARGLRV
VMQKLDPYLN VDPGTMNPFQ HGEVFVTDDG AETDLDIGHY ERFLDINLNQ AANVTTGQIY
SRVIARERAG EYLGDTVQVI PHITDEIKRR MRLQAEDQPQ PDVIITEIGG TVGDIESQPF
LESARQVRHE LGRRNVFFVH VSLVPFMAAS GEQKTKPTQH SVAALRSIGI QPDALVLRSD
RPVSESNKRK IALMCDVDEQ AVVNAKDVAS IYEIPQMLND QGLDAYIIHQ LGLPAGEVVW
DGWAHLVEAV HEPKHAVSIG LVGKYIDLPD AYLSVTEALR AGGFAQRTKV TIRWIASDGL
EDQAAAAAAL AELDGICVPG GFGVRGIEGK LGALRFAREN GIPTLGLCLG LQCMVIEYAR
NEAGLTGASS SEFDPDTPFP VIATMAEQVD ILAAGDMGGT MRLGLYPATL AEGSIVAEVY
GSAEVAERHR HRYEVNNAYR DRIAEAGLWF SGTSPDGKLV EYVELPRDRH PYYVGTQAHP
ELRSRPNSAH PLFRGLITAA RERQEASRLF PASEAGVNE
//
