ID PYRB_CUPMC Reviewed; 323 AA. AC Q1LJR3; DT 26-FEB-2008, integrated into UniProtKB/Swiss-Prot. DT 30-MAY-2006, sequence version 1. DT 27-MAR-2024, entry version 98. DE RecName: Full=Aspartate carbamoyltransferase catalytic subunit {ECO:0000255|HAMAP-Rule:MF_00001}; DE EC=2.1.3.2 {ECO:0000255|HAMAP-Rule:MF_00001}; DE AltName: Full=Aspartate transcarbamylase {ECO:0000255|HAMAP-Rule:MF_00001}; DE Short=ATCase {ECO:0000255|HAMAP-Rule:MF_00001}; GN Name=pyrB {ECO:0000255|HAMAP-Rule:MF_00001}; GN OrderedLocusNames=Rmet_2740; OS Cupriavidus metallidurans (strain ATCC 43123 / DSM 2839 / NBRC 102507 / OS CH34) (Ralstonia metallidurans). OC Bacteria; Pseudomonadota; Betaproteobacteria; Burkholderiales; OC Burkholderiaceae; Cupriavidus. OX NCBI_TaxID=266264; RN [1] RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=ATCC 43123 / DSM 2839 / NBRC 102507 / CH34; RX PubMed=20463976; DOI=10.1371/journal.pone.0010433; RA Janssen P.J., Van Houdt R., Moors H., Monsieurs P., Morin N., Michaux A., RA Benotmane M.A., Leys N., Vallaeys T., Lapidus A., Monchy S., Medigue C., RA Taghavi S., McCorkle S., Dunn J., van der Lelie D., Mergeay M.; RT "The complete genome sequence of Cupriavidus metallidurans strain CH34, a RT master survivalist in harsh and anthropogenic environments."; RL PLoS ONE 5:E10433-E10433(2010). CC -!- FUNCTION: Catalyzes the condensation of carbamoyl phosphate and CC aspartate to form carbamoyl aspartate and inorganic phosphate, the CC committed step in the de novo pyrimidine nucleotide biosynthesis CC pathway. {ECO:0000255|HAMAP-Rule:MF_00001}. CC -!- CATALYTIC ACTIVITY: CC Reaction=carbamoyl phosphate + L-aspartate = H(+) + N-carbamoyl-L- CC aspartate + phosphate; Xref=Rhea:RHEA:20013, ChEBI:CHEBI:15378, CC ChEBI:CHEBI:29991, ChEBI:CHEBI:32814, ChEBI:CHEBI:43474, CC ChEBI:CHEBI:58228; EC=2.1.3.2; Evidence={ECO:0000255|HAMAP- CC Rule:MF_00001}; CC -!- PATHWAY: Pyrimidine metabolism; UMP biosynthesis via de novo pathway; CC (S)-dihydroorotate from bicarbonate: step 2/3. {ECO:0000255|HAMAP- CC Rule:MF_00001}. CC -!- SUBUNIT: Heterododecamer (2C3:3R2) of six catalytic PyrB chains CC organized as two trimers (C3), and six regulatory PyrI chains organized CC as three dimers (R2). {ECO:0000255|HAMAP-Rule:MF_00001}. CC -!- SIMILARITY: Belongs to the aspartate/ornithine carbamoyltransferase CC superfamily. ATCase family. {ECO:0000255|HAMAP-Rule:MF_00001}. 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; CP000352; ABF09613.1; -; Genomic_DNA. DR RefSeq; WP_008646281.1; NC_007973.1. DR AlphaFoldDB; Q1LJR3; -. DR SMR; Q1LJR3; -. DR STRING; 266264.Rmet_2740; -. DR GeneID; 60820809; -. DR KEGG; rme:Rmet_2740; -. DR eggNOG; COG0540; Bacteria. DR HOGENOM; CLU_043846_2_0_4; -. DR UniPathway; UPA00070; UER00116. DR Proteomes; UP000002429; Chromosome. DR GO; GO:0016597; F:amino acid binding; IEA:InterPro. DR GO; GO:0004070; F:aspartate carbamoyltransferase activity; IEA:UniProtKB-UniRule. DR GO; GO:0006207; P:'de novo' pyrimidine nucleobase biosynthetic process; IEA:InterPro. DR GO; GO:0044205; P:'de novo' UMP biosynthetic process; IEA:UniProtKB-UniPathway. DR GO; GO:0006520; P:amino acid metabolic process; IEA:InterPro. DR Gene3D; 3.40.50.1370; Aspartate/ornithine carbamoyltransferase; 2. DR HAMAP; MF_00001; Asp_carb_tr; 1. DR InterPro; IPR006132; Asp/Orn_carbamoyltranf_P-bd. DR InterPro; IPR006130; Asp/Orn_carbamoylTrfase. DR InterPro; IPR036901; Asp/Orn_carbamoylTrfase_sf. DR InterPro; IPR002082; Asp_carbamoyltransf. DR InterPro; IPR006131; Asp_carbamoyltransf_Asp/Orn-bd. DR NCBIfam; TIGR00670; asp_carb_tr; 1. DR PANTHER; PTHR45753:SF6; ASPARTATE CARBAMOYLTRANSFERASE; 1. DR PANTHER; PTHR45753; ORNITHINE CARBAMOYLTRANSFERASE, MITOCHONDRIAL; 1. DR Pfam; PF00185; OTCace; 1. DR Pfam; PF02729; OTCace_N; 1. DR PRINTS; PR00100; AOTCASE. DR PRINTS; PR00101; ATCASE. DR SUPFAM; SSF53671; Aspartate/ornithine carbamoyltransferase; 1. DR PROSITE; PS00097; CARBAMOYLTRANSFERASE; 1. PE 3: Inferred from homology; KW Pyrimidine biosynthesis; Reference proteome; Transferase. FT CHAIN 1..323 FT /note="Aspartate carbamoyltransferase catalytic subunit" FT /id="PRO_0000321147" FT BINDING 71 FT /ligand="carbamoyl phosphate" FT /ligand_id="ChEBI:CHEBI:58228" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001" FT BINDING 72 FT /ligand="carbamoyl phosphate" FT /ligand_id="ChEBI:CHEBI:58228" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001" FT BINDING 99 FT /ligand="L-aspartate" FT /ligand_id="ChEBI:CHEBI:29991" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001" FT BINDING 121 FT /ligand="carbamoyl phosphate" FT /ligand_id="ChEBI:CHEBI:58228" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001" FT BINDING 151 FT /ligand="carbamoyl phosphate" FT /ligand_id="ChEBI:CHEBI:58228" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001" FT BINDING 154 FT /ligand="carbamoyl phosphate" FT /ligand_id="ChEBI:CHEBI:58228" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001" FT BINDING 184 FT /ligand="L-aspartate" FT /ligand_id="ChEBI:CHEBI:29991" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001" FT BINDING 239 FT /ligand="L-aspartate" FT /ligand_id="ChEBI:CHEBI:29991" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001" FT BINDING 280 FT /ligand="carbamoyl phosphate" FT /ligand_id="ChEBI:CHEBI:58228" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001" FT BINDING 281 FT /ligand="carbamoyl phosphate" FT /ligand_id="ChEBI:CHEBI:58228" FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001" SQ SEQUENCE 323 AA; 35248 MW; 1BAE62504717E8A1 CRC64; MTKTFRNPQL TKNGELKHLL SIEGLSRDMI THILDTASQF VSLSDSDREV KKVPLLRGKS VFNLFFENST RTRTTFEIAA KRLSADVLNL NINASSTSKG ESLLDTINNL SAMSADMFVV RHASSGAPYL IAEHVAPHVH VINAGDGRHA HPTQGLLDMY TIRHFKKDFT NLTVAIVGDI LHSRVARSDI HALTTLGVPE VRAIGPRTLL PSGLEQMGVR VFHNMEEGLK GVDVVIMLRL QNERMTGALL PSAQEYFKAY GLTPERLALA KPDAIVMHPG PMNRGVEIDS AVADGPQSVI LNQVTFGIAV RMAVMGIVAG NND //