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HIS3_BACC7
ID   HIS3_BACC7              Reviewed;         101 AA.
AC   B7HKD5;
DT   14-APR-2009, integrated into UniProtKB/Swiss-Prot.
DT   10-FEB-2009, sequence version 1.
DT   03-AUG-2022, entry version 59.
DE   RecName: Full=Phosphoribosyl-AMP cyclohydrolase {ECO:0000255|HAMAP-Rule:MF_01021};
DE            Short=PRA-CH {ECO:0000255|HAMAP-Rule:MF_01021};
DE            EC=3.5.4.19 {ECO:0000255|HAMAP-Rule:MF_01021};
GN   Name=hisI {ECO:0000255|HAMAP-Rule:MF_01021};
GN   OrderedLocusNames=BCAH187_A1570;
OS   Bacillus cereus (strain AH187).
OC   Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Bacillus;
OC   Bacillus cereus group.
OX   NCBI_TaxID=405534;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AH187;
RA   Dodson R.J., Durkin A.S., Rosovitz M.J., Rasko D.A., Kolsto A.B.,
RA   Okstad O.A., Ravel J., Sutton G.;
RT   "Genome sequence of Bacillus cereus AH187.";
RL   Submitted (OCT-2008) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the hydrolysis of the adenine ring of
CC       phosphoribosyl-AMP. {ECO:0000255|HAMAP-Rule:MF_01021}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=1-(5-phospho-beta-D-ribosyl)-5'-AMP + H2O = 1-(5-phospho-beta-
CC         D-ribosyl)-5-[(5-phospho-beta-D-
CC         ribosylamino)methylideneamino]imidazole-4-carboxamide;
CC         Xref=Rhea:RHEA:20049, ChEBI:CHEBI:15377, ChEBI:CHEBI:58435,
CC         ChEBI:CHEBI:59457; EC=3.5.4.19; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_01021};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01021};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01021};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_01021};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_01021};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-histidine biosynthesis; L-histidine
CC       from 5-phospho-alpha-D-ribose 1-diphosphate: step 3/9.
CC       {ECO:0000255|HAMAP-Rule:MF_01021}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_01021}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_01021}.
CC   -!- SIMILARITY: Belongs to the PRA-CH family. {ECO:0000255|HAMAP-
CC       Rule:MF_01021}.
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DR   EMBL; CP001177; ACJ82482.1; -; Genomic_DNA.
DR   RefSeq; WP_000803967.1; NC_011658.1.
DR   AlphaFoldDB; B7HKD5; -.
DR   SMR; B7HKD5; -.
DR   EnsemblBacteria; ACJ82482; ACJ82482; BCAH187_A1570.
DR   KEGG; bcr:BCAH187_A1570; -.
DR   HOGENOM; CLU_048577_5_3_9; -.
DR   OMA; TGYRSCF; -.
DR   OrthoDB; 1842189at2; -.
DR   UniPathway; UPA00031; UER00008.
DR   Proteomes; UP000002214; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0004635; F:phosphoribosyl-AMP cyclohydrolase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0000105; P:histidine biosynthetic process; IEA:UniProtKB-UniRule.
DR   Gene3D; 3.10.20.810; -; 1.
DR   HAMAP; MF_01021; HisI; 1.
DR   InterPro; IPR026660; PRA-CH.
DR   InterPro; IPR002496; PRib_AMP_CycHydrolase_dom.
DR   InterPro; IPR038019; PRib_AMP_CycHydrolase_sf.
DR   Pfam; PF01502; PRA-CH; 1.
DR   SUPFAM; SSF141734; SSF141734; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Cytoplasm; Histidine biosynthesis; Hydrolase;
KW   Magnesium; Metal-binding; Zinc.
FT   CHAIN           1..101
FT                   /note="Phosphoribosyl-AMP cyclohydrolase"
FT                   /id="PRO_1000135333"
FT   BINDING         71
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01021"
FT   BINDING         72
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01021"
FT   BINDING         73
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01021"
FT   BINDING         75
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01021"
FT   BINDING         88
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01021"
FT   BINDING         95
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_01021"
SQ   SEQUENCE   101 AA;  11598 MW;  E4AE61120A14EEF1 CRC64;
     MKPNFSKGLL PAIVIEEGTK EVLMLAYMNE EAYEKTLKTK RTWFYSRSRR SLWNKGETSG
     NVQHVQSLYL DCDQDAIVVV VKQVGPACHT GEKTCFHYKI I
 
 
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