ID PYRB_CUPTR Reviewed; 323 AA.
AC B3R5Y0;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 02-SEP-2008, sequence version 1.
DT 27-MAR-2024, entry version 86.
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}; OrderedLocusNames=RALTA_A2394;
OS Cupriavidus taiwanensis (strain DSM 17343 / BCRC 17206 / CCUG 44338 / CIP
OS 107171 / LMG 19424 / R1) (Ralstonia taiwanensis (strain LMG 19424)).
OC Bacteria; Pseudomonadota; Betaproteobacteria; Burkholderiales;
OC Burkholderiaceae; Cupriavidus.
OX NCBI_TaxID=977880;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 17343 / BCRC 17206 / CCUG 44338 / CIP 107171 / LMG 19424 / R1;
RX PubMed=18490699; DOI=10.1101/gr.076448.108;
RA Amadou C., Pascal G., Mangenot S., Glew M., Bontemps C., Capela D.,
RA Carrere S., Cruveiller S., Dossat C., Lajus A., Marchetti M., Poinsot V.,
RA Rouy Z., Servin B., Saad M., Schenowitz C., Barbe V., Batut J., Medigue C.,
RA Masson-Boivin C.;
RT "Genome sequence of the beta-rhizobium Cupriavidus taiwanensis and
RT comparative genomics of rhizobia.";
RL Genome Res. 18:1472-1483(2008).
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}.
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DR EMBL; CU633749; CAQ70328.1; -; Genomic_DNA.
DR RefSeq; WP_012353628.1; NC_010528.1.
DR AlphaFoldDB; B3R5Y0; -.
DR SMR; B3R5Y0; -.
DR GeneID; 29760856; -.
DR KEGG; cti:RALTA_A2394; -.
DR eggNOG; COG0540; Bacteria.
DR HOGENOM; CLU_043846_2_0_4; -.
DR BioCyc; CTAI977880:RALTA_RS11635-MONOMER; -.
DR UniPathway; UPA00070; UER00116.
DR Proteomes; UP000001692; Chromosome 1.
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; Transferase.
FT CHAIN 1..323
FT /note="Aspartate carbamoyltransferase catalytic subunit"
FT /id="PRO_1000088757"
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; 35166 MW; C78A8B70C240DBBF CRC64;
MTKTFRNPQL TKNGELKHLL SIEGLSRDMI THILDTASQF VSLSDSDRDV KKVPLLRGKS
VFNLFFENST RTRTTFEIAA KRLSADVLNL NINASSTSKG ESLLDTINNL SAMSADMFVV
RHASSGAPYL IAEHVAPHVH VINAGDGRHA HPTQGLLDMY TIRHFKKDFT NLTVAIVGDI
LHSRVARSDI HALTTLGVPE VRAIGPRTLL PSGLEQMGVR VFHSMEEGLK GVDVVIMLRL
QNERMSGALL PSAQEYFKAY GLTPERLALA KPDAIVMHPG PMNRGVEIDS AVADGAQSVI
LNQVTFGIAV RMAVMGIVAG NND
//
