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1INP

CRYSTAL STRUCTURE OF INOSITOL POLYPHOSPHATE 1-PHOSPHATASE AT 2.3 ANGSTROMS RESOLUTION

Functional Information from GO Data
ChainGOidnamespacecontents
A0004441molecular_functioninositol-1,4-bisphosphate 1-phosphatase activity
A0016787molecular_functionhydrolase activity
A0046854biological_processphosphatidylinositol phosphate biosynthetic process
A0046872molecular_functionmetal ion binding
A0052829molecular_functioninositol-1,3,4-trisphosphate 1-phosphatase activity
Functional Information from PDB Data
site_idAC1
Number of Residues3
DetailsBINDING SITE FOR RESIDUE MG A 401
ChainResidue
AASP317
AASP153
AASP156

site_idAC2
Number of Residues5
DetailsBINDING SITE FOR RESIDUE MG A 402
ChainResidue
AASP54
AGLU79
AASP153
AILE155
ATHR158

site_idMAG
Number of Residues7
Details
ChainResidue
AASP54
AGLU79
AGLU80
AASP153
AASP156
AASP317
AHOH447

Functional Information from PROSITE/UniProt
site_idPS00629
Number of Residues13
DetailsIMP_1 Inositol monophosphatase family signature 1. W.VDPIDSTyqYiK
ChainResidueDetails
ATRP151-LYS163

site_idPS00630
Number of Residues15
DetailsIMP_2 Inositol monophosphatase family signature 2. WDsCAAhAILramGG
ChainResidueDetails
ATRP316-GLY330

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues20
DetailsRegion: {"description":"Disordered","evidences":[{"source":"SAM","id":"MobiDB-lite","evidenceCode":"ECO:0000256"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues19
DetailsCompositional bias: {"description":"Polar residues","evidences":[{"source":"SAM","id":"MobiDB-lite","evidenceCode":"ECO:0000256"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"33172890","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues4
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"7947723","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1INP","evidenceCode":"ECO:0000312"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues9
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"33172890","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"7KIR","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues1
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P49441","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idMCSA1
Number of Residues7
DetailsM-CSA 856
ChainResidueDetails
AASP54electrostatic stabiliser, proton acceptor, proton donor
AGLU79metal ligand
AASP153metal ligand
AILE155metal ligand
AASP156metal ligand
ATHR158electrostatic stabiliser, enhance reactivity, increase nucleophilicity, proton acceptor, proton donor, proton relay
AASP317metal ligand

246031

PDB entries from 2025-12-10

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