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Database: UniProt
Entry: A0A432MG56_9BACT
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ID   A0A432MG56_9BACT        Unreviewed;       133 AA.
AC   A0A432MG56;
DT   08-MAY-2019, integrated into UniProtKB/TrEMBL.
DT   08-MAY-2019, sequence version 1.
DT   22-FEB-2023, entry version 12.
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   ECO:0000313|EMBL:RUL85538.1};
GN   ORFNames=TsocGM_18335 {ECO:0000313|EMBL:RUL85538.1};
OS   Tautonia sociabilis.
OC   Bacteria; Planctomycetota; Planctomycetia; Isosphaerales; Isosphaeraceae;
OC   Tautonia.
OX   NCBI_TaxID=2080755 {ECO:0000313|EMBL:RUL85538.1, ECO:0000313|Proteomes:UP000280296};
RN   [1] {ECO:0000313|EMBL:RUL85538.1, ECO:0000313|Proteomes:UP000280296}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=GM2012 {ECO:0000313|EMBL:RUL85538.1,
RC   ECO:0000313|Proteomes:UP000280296};
RA   Toschakov S.V.;
RL   Submitted (DEC-2018) to the EMBL/GenBank/DDBJ databases.
RN   [2] {ECO:0000313|EMBL:RUL85538.1, ECO:0000313|Proteomes:UP000280296}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=GM2012 {ECO:0000313|EMBL:RUL85538.1,
RC   ECO:0000313|Proteomes:UP000280296};
RA   Kovaleva O.L., Elcheninov A.G., Van Heerden E., Toshchakov S.V.,
RA   Novikov A., Bonch-Osmolovskaya E.A., Kublanov I.V.;
RT   "Tautonia sociabilis, a novel thermotolerant planctomycete of
RT   Isosphaeraceae family, isolated from a 4000 m deep subterranean habitat.";
RL   Submitted (JAN-2019) to the EMBL/GenBank/DDBJ databases.
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}.
CC   -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC       whole genome shotgun (WGS) entry which is preliminary data.
CC       {ECO:0000313|EMBL:RUL85538.1}.
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DR   EMBL; RYZH01000039; RUL85538.1; -; Genomic_DNA.
DR   AlphaFoldDB; A0A432MG56; -.
DR   OrthoDB; 9795769at2; -.
DR   UniPathway; UPA00031; UER00008.
DR   Proteomes; UP000280296; Unassembled WGS sequence.
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:UP000280296};
KW   Zinc {ECO:0000256|HAMAP-Rule:MF_01021}.
FT   DOMAIN          34..107
FT                   /note="Phosphoribosyl-AMP cyclohydrolase"
FT                   /evidence="ECO:0000259|Pfam:PF01502"
FT   BINDING         81
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01021"
FT   BINDING         82
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         83
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01021"
FT   BINDING         85
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_01021"
FT   BINDING         98
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         105
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   133 AA;  14559 MW;  218501916DB6F247 CRC64;
     MTAPEPAFLN ALKWTPDGLI PAIVQDAEAG DVLMMAWMDR DAVLRTLETG QTHFYSRSRR
     SSWHKGGTSG HVQHVEEIRV DCDGDVLLIR ARQVGGACHE GYRSCFFRRV APDGQLEATG
     APVFDPSAIY GSG
//
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