ID   IPYR_AQUPY              Reviewed;         177 AA.
AC   Q8GQS5;
DT   11-APR-2003, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   03-AUG-2022, entry version 57.
DE   RecName: Full=Inorganic pyrophosphatase {ECO:0000255|HAMAP-Rule:MF_00209};
DE            EC=3.6.1.1 {ECO:0000255|HAMAP-Rule:MF_00209};
DE   AltName: Full=Pyrophosphate phospho-hydrolase {ECO:0000255|HAMAP-Rule:MF_00209};
DE            Short=PPase {ECO:0000255|HAMAP-Rule:MF_00209};
GN   Name=ppa {ECO:0000255|HAMAP-Rule:MF_00209};
OS   Aquifex pyrophilus.
OC   Bacteria; Aquificae; Aquificales; Aquificaceae; Aquifex.
OX   NCBI_TaxID=2714;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RA   Hoe H.-S., Kim H.-K., Kwon S.-T.;
RT   "Molecular cloning, expression, and characterization of inorganic
RT   pyrophosphatase from Aquifex pyrophilus.";
RL   Submitted (OCT-2000) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the hydrolysis of inorganic pyrophosphate (PPi)
CC       forming two phosphate ions. {ECO:0000255|HAMAP-Rule:MF_00209}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=diphosphate + H2O = H(+) + 2 phosphate; Xref=Rhea:RHEA:24576,
CC         ChEBI:CHEBI:15377, ChEBI:CHEBI:15378, ChEBI:CHEBI:33019,
CC         ChEBI:CHEBI:43474; EC=3.6.1.1; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00209};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00209};
CC   -!- SUBUNIT: Homohexamer. {ECO:0000255|HAMAP-Rule:MF_00209}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00209}.
CC   -!- SIMILARITY: Belongs to the PPase family. {ECO:0000255|HAMAP-
CC       Rule:MF_00209}.
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DR   EMBL; AF312862; AAN39919.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q8GQS5; -.
DR   SMR; Q8GQS5; -.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004427; F:inorganic diphosphatase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0000287; F:magnesium ion binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006796; P:phosphate-containing compound metabolic process; IEA:InterPro.
DR   CDD; cd00412; pyrophosphatase; 1.
DR   Gene3D; 3.90.80.10; -; 1.
DR   HAMAP; MF_00209; Inorganic_PPase; 1.
DR   InterPro; IPR008162; Pyrophosphatase.
DR   InterPro; IPR036649; Pyrophosphatase_sf.
DR   PANTHER; PTHR10286; PTHR10286; 1.
DR   Pfam; PF00719; Pyrophosphatase; 1.
DR   SUPFAM; SSF50324; SSF50324; 1.
DR   PROSITE; PS00387; PPASE; 1.
PE   3: Inferred from homology;
KW   Cytoplasm; Hydrolase; Magnesium; Metal-binding.
FT   CHAIN           1..177
FT                   /note="Inorganic pyrophosphatase"
FT                   /id="PRO_0000137476"
FT   BINDING         29
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         43
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         55
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         65
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         70
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         70
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         102
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         141
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
SQ   SEQUENCE   177 AA;  20330 MW;  3B682C5DE65AB075 CRC64;
     MGYKDLPPGK NPPEDIYVVI EIPQGSGIKY ELDKDTGVIF VDRFLFTAMY YPFNYGFIPQ
     TLADDGDPVD VLVISREPVA PGSVMRCRPI GMLEMRDEEG IDTKLIAVPH EKLDPTYSDI
     KTVDQLPEII RERIKHFFEH YKELEPGKWV KVENWRGLQD AIEEIKKGIE NYKKGGK