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1M38

Structure of Inorganic Pyrophosphatase

Functional Information from GO Data
ChainGOidnamespacecontents
A0000287molecular_functionmagnesium ion binding
A0004427molecular_functioninorganic diphosphate phosphatase activity
A0005515molecular_functionprotein binding
A0005634cellular_componentnucleus
A0005737cellular_componentcytoplasm
A0005739cellular_componentmitochondrion
A0006796biological_processphosphate-containing compound metabolic process
A0016787molecular_functionhydrolase activity
A0046872molecular_functionmetal ion binding
B0000287molecular_functionmagnesium ion binding
B0004427molecular_functioninorganic diphosphate phosphatase activity
B0005515molecular_functionprotein binding
B0005634cellular_componentnucleus
B0005737cellular_componentcytoplasm
B0005739cellular_componentmitochondrion
B0006796biological_processphosphate-containing compound metabolic process
B0016787molecular_functionhydrolase activity
B0046872molecular_functionmetal ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues8
DetailsBINDING SITE FOR RESIDUE CO A 401
ChainResidue
AASP115
AASP120
AASP152
ACO402
APO43301
AHOH3667
AHOH3668
AHOH3670

site_idAC2
Number of Residues8
DetailsBINDING SITE FOR RESIDUE CO A 402
ChainResidue
ACO401
APO43301
AHOH3324
AHOH3667
AHOH3669
AHOH3671
AHOH3672
AASP120

site_idAC3
Number of Residues4
DetailsBINDING SITE FOR RESIDUE CO A 403
ChainResidue
ALYS56
AGLU58
APO43301
AHOH3464

site_idAC4
Number of Residues7
DetailsBINDING SITE FOR RESIDUE CO A 404
ChainResidue
AASP147
AASP152
APO43301
AHOH3364
AHOH3386
AHOH3565
AHOH3668

site_idAC5
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CO B 401
ChainResidue
BASP115
BASP120
BASP152
BHOH3545
BHOH3788
BHOH3789

site_idAC6
Number of Residues7
DetailsBINDING SITE FOR RESIDUE CO B 402
ChainResidue
BASP120
BHOH3542
BHOH3545
BHOH3790
BHOH3791
BHOH3792
BHOH3793

site_idAC7
Number of Residues10
DetailsBINDING SITE FOR RESIDUE PO4 B 3501
ChainResidue
ALYS74
BLYS56
BARG78
BASP147
BTYR192
BLYS193
BHOH3642
BHOH3653
BHOH3766
BHOH3781

site_idAC8
Number of Residues18
DetailsBINDING SITE FOR RESIDUE PO4 A 3301
ChainResidue
ALYS56
AGLU58
ATYR93
AASP115
AASP117
AASP120
AASP152
ACO401
ACO402
ACO403
ACO404
AHOH3364
AHOH3464
AHOH3565
AHOH3667
AHOH3668
AHOH3669
AHOH3672

Functional Information from PROSITE/UniProt
site_idPS00387
Number of Residues7
DetailsPPASE Inorganic pyrophosphatase signature. DNDPIDV
ChainResidueDetails
AASP115-VAL121

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues2
DetailsActive site: {"description":"Proton donor","evidences":[{"source":"PubMed","id":"1322842","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues8
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"18407956","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"PubMed","id":"15665377","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"17330950","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"18407956","evidenceCode":"ECO:0007744"},{"source":"PubMed","id":"19779198","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues6
DetailsCross-link: {"description":"Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in ubiquitin)","evidences":[{"source":"PubMed","id":"22106047","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues1
DetailsAnnotated By Reference To The Literature 1wgi
ChainResidueDetails
AASP117

site_idCSA2
Number of Residues1
DetailsAnnotated By Reference To The Literature 1wgi
ChainResidueDetails
BASP117

247536

PDB entries from 2026-01-14

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