ID   PYRI_BUCAT              Reviewed;         154 AA.
AC   B8D7Q7;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-MAR-2009, sequence version 1.
DT   03-AUG-2022, entry version 59.
DE   RecName: Full=Aspartate carbamoyltransferase regulatory chain {ECO:0000255|HAMAP-Rule:MF_00002};
GN   Name=pyrI {ECO:0000255|HAMAP-Rule:MF_00002};
GN   OrderedLocusNames=BUAPTUC7_364;
OS   Buchnera aphidicola subsp. Acyrthosiphon pisum (strain Tuc7).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=561501;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Tuc7;
RX   PubMed=19150844; DOI=10.1126/science.1167140;
RA   Moran N.A., McLaughlin H.J., Sorek R.;
RT   "The dynamics and time scale of ongoing genomic erosion in symbiotic
RT   bacteria.";
RL   Science 323:379-382(2009).
CC   -!- FUNCTION: Involved in allosteric regulation of aspartate
CC       carbamoyltransferase. {ECO:0000255|HAMAP-Rule:MF_00002}.
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00002};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_00002};
CC   -!- SUBUNIT: Contains catalytic and regulatory chains. {ECO:0000255|HAMAP-
CC       Rule:MF_00002}.
CC   -!- SIMILARITY: Belongs to the PyrI family. {ECO:0000255|HAMAP-
CC       Rule:MF_00002}.
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DR   EMBL; CP001158; ACL30172.1; -; Genomic_DNA.
DR   RefSeq; WP_012619524.1; NC_011834.1.
DR   AlphaFoldDB; B8D7Q7; -.
DR   SMR; B8D7Q7; -.
DR   KEGG; bau:BUAPTUC7_364; -.
DR   HOGENOM; CLU_128576_0_0_6; -.
DR   OMA; CPNRNCI; -.
DR   GO; GO:0009347; C:aspartate carbamoyltransferase complex; IEA:InterPro.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0006207; P:'de novo' pyrimidine nucleobase biosynthetic process; IEA:InterPro.
DR   GO; GO:0006221; P:pyrimidine nucleotide biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.30.70.140; -; 1.
DR   HAMAP; MF_00002; Asp_carb_tr_reg; 1.
DR   InterPro; IPR020545; Asp_carbamoyltransf_reg_N.
DR   InterPro; IPR002801; Asp_carbamoylTrfase_reg.
DR   InterPro; IPR020542; Asp_carbamoyltrfase_reg_C.
DR   InterPro; IPR036792; Asp_carbatrfase_reg_C_sf.
DR   InterPro; IPR036793; Asp_carbatrfase_reg_N_sf.
DR   PANTHER; PTHR35805; PTHR35805; 1.
DR   Pfam; PF01948; PyrI; 1.
DR   Pfam; PF02748; PyrI_C; 1.
DR   SUPFAM; SSF54893; SSF54893; 1.
DR   SUPFAM; SSF57825; SSF57825; 1.
DR   TIGRFAMs; TIGR00240; ATCase_reg; 1.
PE   3: Inferred from homology;
KW   Metal-binding; Pyrimidine biosynthesis; Zinc.
FT   CHAIN           1..154
FT                   /note="Aspartate carbamoyltransferase regulatory chain"
FT                   /id="PRO_1000193104"
FT   BINDING         108
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00002"
FT   BINDING         113
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00002"
FT   BINDING         138
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00002"
FT   BINDING         141
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00002"
SQ   SEQUENCE   154 AA;  17942 MW;  7F753FDA11BB9DEF CRC64;
     MEINKLQVEA IKSGSVIDHI PEYIGFKLLS LFRFTETEKR ITIGLNLPSK KLGRKDIIKI
     ENTFLSDEQI NQLAIYAPHA TVNYINEYNL VRKVFPTLPK TIDRILICPN SNCVTNHHLI
     NSSFILKEDQ FFNMNLKCKY CEKEFYKKIV LSCQ