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Database: UniProt
Entry: PYRB_MYCLE
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ID   PYRB_MYCLE              Reviewed;         321 AA.
AC   Q9CCR5;
DT   11-JUL-2001, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2001, sequence version 1.
DT   24-JAN-2024, entry version 120.
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=ML0532;
OS   Mycobacterium leprae (strain TN).
OC   Bacteria; Actinomycetota; Actinomycetes; Mycobacteriales; Mycobacteriaceae;
OC   Mycobacterium.
OX   NCBI_TaxID=272631;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=TN;
RX   PubMed=11234002; DOI=10.1038/35059006;
RA   Cole S.T., Eiglmeier K., Parkhill J., James K.D., Thomson N.R.,
RA   Wheeler P.R., Honore N., Garnier T., Churcher C.M., Harris D.E.,
RA   Mungall K.L., Basham D., Brown D., Chillingworth T., Connor R.,
RA   Davies R.M., Devlin K., Duthoy S., Feltwell T., Fraser A., Hamlin N.,
RA   Holroyd S., Hornsby T., Jagels K., Lacroix C., Maclean J., Moule S.,
RA   Murphy L.D., Oliver K., Quail M.A., Rajandream M.A., Rutherford K.M.,
RA   Rutter S., Seeger K., Simon S., Simmonds M., Skelton J., Squares R.,
RA   Squares S., Stevens K., Taylor K., Whitehead S., Woodward J.R.,
RA   Barrell B.G.;
RT   "Massive gene decay in the leprosy bacillus.";
RL   Nature 409:1007-1011(2001).
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       ECO:0000305}.
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DR   EMBL; AL583918; CAC30040.1; -; Genomic_DNA.
DR   PIR; D86975; D86975.
DR   RefSeq; NP_301452.1; NC_002677.1.
DR   RefSeq; WP_010907776.1; NC_002677.1.
DR   AlphaFoldDB; Q9CCR5; -.
DR   SMR; Q9CCR5; -.
DR   STRING; 272631.gene:17574353; -.
DR   KEGG; mle:ML0532; -.
DR   PATRIC; fig|272631.5.peg.932; -.
DR   Leproma; ML0532; -.
DR   eggNOG; COG0540; Bacteria.
DR   HOGENOM; CLU_043846_2_0_11; -.
DR   OMA; FPTEREY; -.
DR   OrthoDB; 9774690at2; -.
DR   UniPathway; UPA00070; UER00116.
DR   Proteomes; UP000000806; 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..321
FT                   /note="Aspartate carbamoyltransferase catalytic subunit"
FT                   /id="PRO_0000113160"
FT   BINDING         57
FT                   /ligand="carbamoyl phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58228"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT   BINDING         58
FT                   /ligand="carbamoyl phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58228"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT   BINDING         85
FT                   /ligand="L-aspartate"
FT                   /ligand_id="ChEBI:CHEBI:29991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT   BINDING         107
FT                   /ligand="carbamoyl phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58228"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT   BINDING         142
FT                   /ligand="carbamoyl phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58228"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT   BINDING         145
FT                   /ligand="carbamoyl phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58228"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT   BINDING         175
FT                   /ligand="L-aspartate"
FT                   /ligand_id="ChEBI:CHEBI:29991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT   BINDING         229
FT                   /ligand="L-aspartate"
FT                   /ligand_id="ChEBI:CHEBI:29991"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT   BINDING         270
FT                   /ligand="carbamoyl phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58228"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
FT   BINDING         271
FT                   /ligand="carbamoyl phosphate"
FT                   /ligand_id="ChEBI:CHEBI:58228"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00001"
SQ   SEQUENCE   321 AA;  34257 MW;  DDC76151F3EAEE86 CRC64;
     MMRRHLLNAG DLSRDDAIAI FDDADRFAHA LVGREIKKLP TLRGRTVITM FYENSTRTRV
     SFEVAGKWMS ANVINVSPAG SSVGKGESLR DTALTLRAAG ADALIIRHPA SGAAHLLADW
     TAAETGEDGP AVINAGDGTH EHPTQALLDA LTIRQRLGSI EGRRILIVGD ILHSRVARSN
     VVLLDTLGAE VVLVAPRTLL PIGVDGWPAT VSCDFDAELP AADAVLMLRV QAERMNGGFF
     PSVREYSCLY GLTERRQALL PGHAVVLHPG PMLRGMEIAS SVADSSQSAV LQQVSNGVHV
     RMAVLFHVLV GTQSAEEEGA A
//
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