ID PYRB_LIMRJ Reviewed; 309 AA.
AC B2G5A1;
DT 24-MAR-2009, integrated into UniProtKB/Swiss-Prot.
DT 10-JUN-2008, sequence version 1.
DT 27-MAR-2024, entry version 82.
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=LAR_0117;
OS Limosilactobacillus reuteri subsp. reuteri (strain JCM 1112) (Lactobacillus
OS reuteri).
OC Bacteria; Bacillota; Bacilli; Lactobacillales; Lactobacillaceae;
OC Limosilactobacillus.
OX NCBI_TaxID=557433;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JCM 1112;
RX PubMed=18487258; DOI=10.1093/dnares/dsn009;
RA Morita H., Toh H., Fukuda S., Horikawa H., Oshima K., Suzuki T.,
RA Murakami M., Hisamatsu S., Kato Y., Takizawa T., Fukuoka H., Yoshimura T.,
RA Itoh K., O'Sullivan D.J., McKay L.L., Ohno H., Kikuchi J., Masaoka T.,
RA Hattori M.;
RT "Comparative genome analysis of Lactobacillus reuteri and Lactobacillus
RT fermentum reveal a genomic island for reuterin and cobalamin production.";
RL DNA Res. 15:151-161(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; AP007281; BAG24633.1; -; Genomic_DNA.
DR RefSeq; WP_003669696.1; NC_010609.1.
DR AlphaFoldDB; B2G5A1; -.
DR SMR; B2G5A1; -.
DR KEGG; lrf:LAR_0117; -.
DR HOGENOM; CLU_043846_2_1_9; -.
DR UniPathway; UPA00070; UER00116.
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..309
FT /note="Aspartate carbamoyltransferase catalytic subunit"
FT /id="PRO_1000088773"
FT BINDING 56
FT /ligand="carbamoyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58228"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT BINDING 57
FT /ligand="carbamoyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58228"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT BINDING 84
FT /ligand="L-aspartate"
FT /ligand_id="ChEBI:CHEBI:29991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT BINDING 106
FT /ligand="carbamoyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58228"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT BINDING 136
FT /ligand="carbamoyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58228"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT BINDING 139
FT /ligand="carbamoyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58228"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT BINDING 169
FT /ligand="L-aspartate"
FT /ligand_id="ChEBI:CHEBI:29991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT BINDING 221
FT /ligand="L-aspartate"
FT /ligand_id="ChEBI:CHEBI:29991"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT BINDING 264
FT /ligand="carbamoyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58228"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT BINDING 265
FT /ligand="carbamoyl phosphate"
FT /ligand_id="ChEBI:CHEBI:58228"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
SQ SEQUENCE 309 AA; 34293 MW; A07FD77C6751C6E4 CRC64;
MISTERIQPN LVTVADMDAA DAIDLIHEAQ AYKAGKQAVL TAPAYAVNLF FENSTRTKTS
FQMAQMKLGM NVLEFEAGTS SVKKGESLYD TVKTMESIGV NVAVIRHPEN EYYNQLINHS
DLKIGIVNGG DGSGQHPSQC LLDMMTINEE FGDFKGLKVL IIGDLSHSRV AHSNAMMLNR
LGAEVYFAGP EKWYDPTLEQ YGTFGDFDEL LPQMDVVNLL RVQNERLTTA DGQAFDANQY
HQAYGLTLER AAKMKQGAII MHPAPVNRGV EIDSSLVEAP NSRIFQQMTN GVYTRMAILS
RVLRYQGLM
//
