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Entry: A0A126RN31_9SPHN
LinkDB: A0A126RN31_9SPHN
Original site: A0A126RN31_9SPHN 
ID   A0A126RN31_9SPHN        Unreviewed;       137 AA.
AC   A0A126RN31;
DT   11-MAY-2016, integrated into UniProtKB/TrEMBL.
DT   11-MAY-2016, sequence version 1.
DT   24-JAN-2024, entry version 28.
DE   RecName: Full=Phosphoribosyl-AMP cyclohydrolase {ECO:0000256|HAMAP-Rule:MF_01021};
DE            Short=PRA-CH {ECO:0000256|HAMAP-Rule:MF_01021};
DE            EC=3.5.4.19 {ECO:0000256|HAMAP-Rule:MF_01021};
GN   Name=hisI {ECO:0000256|HAMAP-Rule:MF_01021};
GN   ORFNames=K426_12405 {ECO:0000313|EMBL:AMK23416.1};
OS   Sphingobium sp. TKS.
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Sphingomonadales;
OC   Sphingomonadaceae; Sphingobium.
OX   NCBI_TaxID=1315974 {ECO:0000313|EMBL:AMK23416.1, ECO:0000313|Proteomes:UP000060779};
RN   [1] {ECO:0000313|Proteomes:UP000060779}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=TKS {ECO:0000313|Proteomes:UP000060779};
RA   Tabata M.;
RT   "Whole genome sequence of gamma-HCH degrading bacterium Sphingobium sp.
RT   TKS.";
RL   Submitted (APR-2013) to the EMBL/GenBank/DDBJ databases.
RN   [2] {ECO:0000313|EMBL:AMK23416.1, ECO:0000313|Proteomes:UP000060779}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=TKS {ECO:0000313|EMBL:AMK23416.1,
RC   ECO:0000313|Proteomes:UP000060779};
RX   PubMed=27056231;
RA   Tabata M., Ohhata S., Kawasumi T., Nikawadori Y., Kishida K., Sato T.,
RA   Ohtsubo Y., Tsuda M., Nagata Y.;
RT   "Complete Genome Sequence of a gamma-Hexachlorocyclohexane Degrader,
RT   Sphingobium sp. Strain TKS, Isolated from a gamma-Hexachlorocyclohexane-
RT   Degrading Microbial Community.";
RL   Genome Announc. 4:0-0(2016).
CC   -!- FUNCTION: Catalyzes the hydrolysis of the adenine ring of
CC       phosphoribosyl-AMP. {ECO:0000256|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;
CC         Evidence={ECO:0000256|ARBA:ARBA00000024, ECO:0000256|HAMAP-
CC         Rule:MF_01021};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000256|HAMAP-Rule:MF_01021};
CC       Note=Binds 1 Mg(2+) ion per subunit. {ECO:0000256|HAMAP-Rule:MF_01021};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000256|HAMAP-Rule:MF_01021};
CC       Note=Binds 1 zinc ion per subunit. {ECO:0000256|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:0000256|ARBA:ARBA00005169, ECO:0000256|HAMAP-Rule:MF_01021}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000256|HAMAP-Rule:MF_01021}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_01021}.
CC   -!- SIMILARITY: Belongs to the PRA-CH family. {ECO:0000256|HAMAP-
CC       Rule:MF_01021}.
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DR   EMBL; CP005083; AMK23416.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A126RN31; -.
DR   STRING; 1315974.K426_12405; -.
DR   KEGG; spht:K426_12405; -.
DR   PATRIC; fig|1315974.3.peg.2612; -.
DR   UniPathway; UPA00031; UER00008.
DR   Proteomes; UP000060779; Chromosome 1.
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; Phosphoribosyl-AMP cyclohydrolase; 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   PANTHER; PTHR42945; HISTIDINE BIOSYNTHESIS BIFUNCTIONAL PROTEIN; 1.
DR   PANTHER; PTHR42945:SF1; HISTIDINE BIOSYNTHESIS BIFUNCTIONAL PROTEIN HIS7; 1.
DR   Pfam; PF01502; PRA-CH; 1.
DR   SUPFAM; SSF141734; HisI-like; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW   Rule:MF_01021};
KW   Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_01021};
KW   Histidine biosynthesis {ECO:0000256|ARBA:ARBA00023102, ECO:0000256|HAMAP-
KW   Rule:MF_01021};
KW   Hydrolase {ECO:0000256|ARBA:ARBA00022801, ECO:0000256|HAMAP-Rule:MF_01021};
KW   Magnesium {ECO:0000256|HAMAP-Rule:MF_01021};
KW   Metal-binding {ECO:0000256|HAMAP-Rule:MF_01021};
KW   Reference proteome {ECO:0000313|Proteomes:UP000060779};
KW   Zinc {ECO:0000256|HAMAP-Rule:MF_01021}.
FT   DOMAIN          45..118
FT                   /note="Phosphoribosyl-AMP cyclohydrolase"
FT                   /evidence="ECO:0000259|Pfam:PF01502"
FT   BINDING         92
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01021"
FT   BINDING         93
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01021"
FT   BINDING         94
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01021"
FT   BINDING         96
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01021"
FT   BINDING         109
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01021"
FT   BINDING         116
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /ligand_note="ligand shared between dimeric partners"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01021"
SQ   SEQUENCE   137 AA;  15140 MW;  73698100E168DE1C CRC64;
     MRLRALYSPL MDEARDRGLT LNPKYDRDGL ITAVVTDVDS GEVLMVAHMN AEALKLTMNT
     GFAHFWSRSR QSLWKKGETS GHMLEVRDLR IDCDQDAVWV KAVPAGPTCH TGARSCFFRH
     IGPEGLAPVT PDADAAD
//
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