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PYRG_TREDE
ID   PYRG_TREDE              Reviewed;         536 AA.
AC   Q73J84;
DT   12-DEC-2006, integrated into UniProtKB/Swiss-Prot.
DT   05-JUL-2004, sequence version 1.
DT   03-AUG-2022, entry version 107.
DE   RecName: Full=CTP synthase {ECO:0000255|HAMAP-Rule:MF_01227};
DE            EC=6.3.4.2 {ECO:0000255|HAMAP-Rule:MF_01227};
DE   AltName: Full=Cytidine 5'-triphosphate synthase {ECO:0000255|HAMAP-Rule:MF_01227};
DE   AltName: Full=Cytidine triphosphate synthetase {ECO:0000255|HAMAP-Rule:MF_01227};
DE            Short=CTP synthetase {ECO:0000255|HAMAP-Rule:MF_01227};
DE            Short=CTPS {ECO:0000255|HAMAP-Rule:MF_01227};
DE   AltName: Full=UTP--ammonia ligase {ECO:0000255|HAMAP-Rule:MF_01227};
GN   Name=pyrG {ECO:0000255|HAMAP-Rule:MF_01227}; OrderedLocusNames=TDE_2692;
OS   Treponema denticola (strain ATCC 35405 / DSM 14222 / CIP 103919 / JCM 8153
OS   / KCTC 15104).
OC   Bacteria; Spirochaetes; Spirochaetales; Treponemataceae; Treponema.
OX   NCBI_TaxID=243275;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 35405 / DSM 14222 / CIP 103919 / JCM 8153 / KCTC 15104;
RX   PubMed=15064399; DOI=10.1073/pnas.0307639101;
RA   Seshadri R., Myers G.S.A., Tettelin H., Eisen J.A., Heidelberg J.F.,
RA   Dodson R.J., Davidsen T.M., DeBoy R.T., Fouts D.E., Haft D.H., Selengut J.,
RA   Ren Q., Brinkac L.M., Madupu R., Kolonay J.F., Durkin S.A., Daugherty S.C.,
RA   Shetty J., Shvartsbeyn A., Gebregeorgis E., Geer K., Tsegaye G.,
RA   Malek J.A., Ayodeji B., Shatsman S., McLeod M.P., Smajs D., Howell J.K.,
RA   Pal S., Amin A., Vashisth P., McNeill T.Z., Xiang Q., Sodergren E.,
RA   Baca E., Weinstock G.M., Norris S.J., Fraser C.M., Paulsen I.T.;
RT   "Comparison of the genome of the oral pathogen Treponema denticola with
RT   other spirochete genomes.";
RL   Proc. Natl. Acad. Sci. U.S.A. 101:5646-5651(2004).
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:0000255|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:0000255|HAMAP-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:0000255|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:0000255|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:0000255|HAMAP-
CC       Rule:MF_01227}.
CC   -!- PATHWAY: Pyrimidine metabolism; CTP biosynthesis via de novo pathway;
CC       CTP from UDP: step 2/2. {ECO:0000255|HAMAP-Rule:MF_01227}.
CC   -!- SUBUNIT: Homotetramer. {ECO:0000255|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:0000255|HAMAP-Rule:MF_01227}.
CC   -!- SIMILARITY: Belongs to the CTP synthase family. {ECO:0000255|HAMAP-
CC       Rule:MF_01227}.
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DR   EMBL; AE017226; AAS13209.1; -; Genomic_DNA.
DR   RefSeq; NP_973290.1; NC_002967.9.
DR   RefSeq; WP_002667101.1; NC_002967.9.
DR   AlphaFoldDB; Q73J84; -.
DR   SMR; Q73J84; -.
DR   STRING; 243275.TDE_2692; -.
DR   EnsemblBacteria; AAS13209; AAS13209; TDE_2692.
DR   GeneID; 2739279; -.
DR   KEGG; tde:TDE_2692; -.
DR   PATRIC; fig|243275.7.peg.2542; -.
DR   eggNOG; COG0504; Bacteria.
DR   HOGENOM; CLU_011675_5_0_12; -.
DR   OMA; EFNNAYR; -.
DR   OrthoDB; 783657at2; -.
DR   UniPathway; UPA00159; UER00277.
DR   Proteomes; UP000008212; Chromosome.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0003883; F:CTP synthase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0004359; F:glutaminase activity; IEA:RHEA.
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-KW.
DR   CDD; cd03113; CTPS_N; 1.
DR   CDD; cd01746; GATase1_CTP_Synthase; 1.
DR   Gene3D; 3.40.50.300; -; 1.
DR   Gene3D; 3.40.50.880; -; 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   PANTHER; PTHR11550; PTHR11550; 1.
DR   Pfam; PF06418; CTP_synth_N; 1.
DR   Pfam; PF00117; GATase; 1.
DR   SUPFAM; SSF52317; SSF52317; 1.
DR   SUPFAM; SSF52540; SSF52540; 1.
DR   TIGRFAMs; TIGR00337; PyrG; 1.
DR   PROSITE; PS51273; GATASE_TYPE_1; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Glutamine amidotransferase; Ligase; Magnesium; Metal-binding;
KW   Nucleotide-binding; Pyrimidine biosynthesis; Reference proteome.
FT   CHAIN           1..536
FT                   /note="CTP synthase"
FT                   /id="PRO_0000266255"
FT   DOMAIN          293..535
FT                   /note="Glutamine amidotransferase type-1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   REGION          1..268
FT                   /note="Amidoligase domain"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   ACT_SITE        383
FT                   /note="Nucleophile; for glutamine hydrolysis"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   ACT_SITE        508
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   ACT_SITE        510
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         14
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /ligand_note="allosteric inhibitor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         14
FT                   /ligand="UTP"
FT                   /ligand_id="ChEBI:CHEBI:46398"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         15..20
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         55
FT                   /ligand="L-glutamine"
FT                   /ligand_id="ChEBI:CHEBI:58359"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         72
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         72
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         142
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         149..151
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /ligand_note="allosteric inhibitor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         189..194
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /ligand_note="allosteric inhibitor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         189..194
FT                   /ligand="UTP"
FT                   /ligand_id="ChEBI:CHEBI:46398"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         225
FT                   /ligand="CTP"
FT                   /ligand_id="ChEBI:CHEBI:37563"
FT                   /ligand_note="allosteric inhibitor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         225
FT                   /ligand="UTP"
FT                   /ligand_id="ChEBI:CHEBI:46398"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         356
FT                   /ligand="L-glutamine"
FT                   /ligand_id="ChEBI:CHEBI:58359"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         384..387
FT                   /ligand="L-glutamine"
FT                   /ligand_id="ChEBI:CHEBI:58359"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         407
FT                   /ligand="L-glutamine"
FT                   /ligand_id="ChEBI:CHEBI:58359"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
FT   BINDING         463
FT                   /ligand="L-glutamine"
FT                   /ligand_id="ChEBI:CHEBI:58359"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01227"
SQ   SEQUENCE   536 AA;  60048 MW;  26BB965479D999C3 CRC64;
     MKSKFIFITG GVVSSLGKGL TAASIGMLLK SRGYSVVNQK FDPYLNVDPG TMNPYQHGEV
     FVTEDGGETD LDLGHYERFT DVPLHKFNST SAGKVYLAIL DRERAGGYNG GTVQVVPHVT
     DEIQSRILGT AEQTGADFVI SEIGGTVGDI EALPFIEAIR QIRYTVGKEN CMFVHLGLLP
     YLKECGEIKT KPMQHSVKEL LSFGIQPDIL ICRSEKRLSK STREKLSLFS NIPQDAIIEN
     LTAKSIYEVP LMLEEAGLGK VLCKLFNIEN KEPNLEEWKK MVQTYYNPEK EITIALVGKY
     VELPDAYLSV AEALTAAGIY HKTSIKLLWI DSKKIETKED AAAFLKDADG IIVPGGFGDR
     GINGMLLTAQ FARENKIPYF GICLGMQISA IEYALNALHI EEANSSEFDK NAKNPVIDLM
     PDQKDVKIGG TLRLGLYRCM IAEGSLAEKA YKSHEIQERH RHRYEFNNLY REKFDNSDMI
     FSGLNPERNL VEIVELKSHP WFVAVQFHPE FASRPNKPHP LFRDFIKAAV DNKINR
 
 
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