ID D8A490_ECOLX Unreviewed; 545 AA. AC D8A490; DT 05-OCT-2010, integrated into UniProtKB/TrEMBL. DT 05-OCT-2010, sequence version 1. DT 05-SEP-2012, entry version 11. DE RecName: Full=CTP synthase; DE EC=6.3.4.2; DE AltName: Full=CTP synthetase; DE AltName: Full=UTP--ammonia ligase; GN Name=pyrG; ORFNames=HMPREF9530_01328; OS Escherichia coli MS 21-1. OC Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacteriales; OC Enterobacteriaceae; Escherichia. OX NCBI_TaxID=749527; RN [1] RP NUCLEOTIDE SEQUENCE. RC STRAIN=MS 21-1; RA Weinstock G., Sodergren E., Clifton S., Fulton L., Fulton B., RA Courtney L., Fronick C., Harrison M., Strong C., Farmer C., RA Delahaunty K., Markovic C., Hall O., Minx P., Tomlinson C., RA Mitreva M., Hou S., Chen J., Wollam A., Pepin K.H., Johnson M., RA Bhonagiri V., Zhang X., Suruliraj S., Warren W., Chinwalla A., RA Mardis E.R., Wilson R.K.; RL Submitted (JUN-2010) 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 (By CC similarity). CC -!- CATALYTIC ACTIVITY: ATP + UTP + NH(3) = ADP + phosphate + CTP. CC -!- ENZYME REGULATION: Allosterically activated by GTP, when glutamine CC is the substrate. Inhibited by CTP (By similarity). CC -!- PATHWAY: Pyrimidine metabolism; CTP biosynthesis via de novo CC pathway; CTP from UDP: step 2/2. CC -!- SUBUNIT: Homotetramer (By similarity). CC -!- SIMILARITY: Belongs to the CTP synthase family. CC -!- SIMILARITY: Contains 1 glutamine amidotransferase type-1 domain. CC --------------------------------------------------------------------------- CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms CC Distributed under the Creative Commons Attribution (CC BY 4.0) License CC --------------------------------------------------------------------------- DR EMBL; ADTR01000124; EFK22050.1; -; Genomic_DNA. DR ProteinModelPortal; D8A490; -. DR SMR; D8A490; 1-545. DR PRIDE; D8A490; -. DR PATRIC; 41827339; VBIEscCol155740_1230. DR UniPathway; UPA00159; UER00277. DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW. DR GO; GO:0003883; F:CTP synthase activity; IEA:HAMAP. DR GO; GO:0006541; P:glutamine metabolic process; IEA:HAMAP. DR GO; GO:0006221; P:pyrimidine nucleotide biosynthetic process; IEA:HAMAP. DR HAMAP; MF_01227; PyrG; 1; -. DR InterPro; IPR004468; CTP_synthase. DR InterPro; IPR017456; CTP_synthase_N. DR InterPro; IPR017926; GATASE_1. DR PANTHER; PTHR11550; PyrG_synth; 1. DR Pfam; PF06418; CTP_synth_N; 1. DR Pfam; PF00117; GATase; 1. DR TIGRFAMs; TIGR00337; PyrG; 1. DR PROSITE; PS51273; GATASE_TYPE_1; 1. PE 3: Inferred from homology; KW ATP-binding; Glutamine amidotransferase; Ligase; Nucleotide-binding; KW Pyrimidine biosynthesis. FT DOMAIN 291 542 Glutamine amidotransferase type-1 (By FT similarity). FT REGION 1 253 Aminator domain (By similarity). FT ACT_SITE 379 379 Nucleophile (By similarity). FT ACT_SITE 515 515 By similarity. FT ACT_SITE 517 517 By similarity. SQ SEQUENCE 545 AA; 60374 MW; FBB9E2E18FA355FC CRC64; MTTNYIFVTG GVVSSLGKGI AAASLAAILE ARGLNVTIMK LDPYINVDPG TMSPIQHGEV FVTEDGAETD LDLGHYERFI RTKMSRRNNF TTGRIYSDVL RKERRGDYLG ATVQVIPHIT NAIKERVLEG GEGHDVVLVE IGGTVGDIES LPFLEAIRQM AVEIGREHTL FMHLTLVPYM AASGEVKTKP TQHSVKELLS IGIQPDILIC RSDRAVPANE RAKIALFCNV PEKAVISLKD VDSIYKIPGL LKSQGLDDYI CKRFSLNCPE ANLSEWEQVI FEEANPVSEV TIGMVGKYIE LPDAYKSVIE ALKHGGLKNR VSVNIKLIDS QDVETRGVEI LKGLDAILVP GGFGYRGVEG MITTARFARE NNIPYLGICL GMQVALIDYA RHVANMENAN STEFVPDCKY PVVALITEWR DENGNVEVRS EKSDLGGTMR LGAQQCQLVD DSLVRQLYNA PTIVERHRHR YEVNNMLLKQ IEDAGLRVAG RSGDDQLVEI IEVPNHPWFV ACQFHPEFTS TPRDGHPLFA GFVKAASEFQ KRQAK //