ID   IPYR_BUCAP              Reviewed;         180 AA.
AC   Q8KA31;
DT   08-NOV-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-OCT-2002, sequence version 1.
DT   03-AUG-2022, entry version 101.
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}; OrderedLocusNames=BUsg_081;
OS   Buchnera aphidicola subsp. Schizaphis graminum (strain Sg).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Erwiniaceae; Buchnera.
OX   NCBI_TaxID=198804;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=Sg;
RX   PubMed=12089438; DOI=10.1126/science.1071278;
RA   Tamas I., Klasson L., Canbaeck B., Naeslund A.K., Eriksson A.-S.,
RA   Wernegreen J.J., Sandstroem J.P., Moran N.A., Andersson S.G.E.;
RT   "50 million years of genomic stasis in endosymbiotic bacteria.";
RL   Science 296:2376-2379(2002).
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; AE013218; AAM67651.1; -; Genomic_DNA.
DR   RefSeq; WP_011053617.1; NC_004061.1.
DR   AlphaFoldDB; Q8KA31; -.
DR   SMR; Q8KA31; -.
DR   STRING; 198804.BUsg_081; -.
DR   EnsemblBacteria; AAM67651; AAM67651; BUsg_081.
DR   KEGG; bas:BUsg_081; -.
DR   eggNOG; COG0221; Bacteria.
DR   HOGENOM; CLU_073198_1_0_6; -.
DR   OMA; DEPTFPG; -.
DR   OrthoDB; 1767807at2; -.
DR   Proteomes; UP000000416; Chromosome.
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..180
FT                   /note="Inorganic pyrophosphatase"
FT                   /id="PRO_0000137485"
FT   BINDING         30
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         44
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         56
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         66
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         71
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         71
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         103
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
FT   BINDING         142
FT                   /ligand="substrate"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00209"
SQ   SEQUENCE   180 AA;  20510 MW;  B954B88307F091EF CRC64;
     MNLNLIKAGN NIPSDIYVII EISSNSSPIK YEVDKQSGVL FVDRFIPTPM FYPCNYGYIN
     ETLSLDGDPL DVLVPSPYPI QSNVVINCKP VGILKMHDES GNDAKIIAVP NDKVSKEYEN
     INDISDISEL LKKQISHFFQ YYKTLEKEKW VEIIGWGDHH EAKLEIKNSY DRAKKNTSLK