Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

ChainsTypeFamily Name Domain Identifier Family IdentifierProvenance Source (Version)
ASCOP2 FamilyPhosphatidylinositol phosphate kinase IIbeta, PIPK IIbeta 8024217 4002087 SCOP2 (2022-06-29)
ASCOP2 SuperfamilySAICAR synthase-like 8036596 3000802 SCOP2 (2022-06-29)
BSCOP2B SuperfamilySAICAR synthase-like 8036596 3000802 SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

ChainsFamily NameDomain Identifier ArchitecturePossible HomologyHomologyTopologyFamilyProvenance Source (Version)
APIP5Ke1bo1A1 A: a+b complex topologyX: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)H: Protein kinase/SAICAR synthase/ATP-graspT: SAICAR synthaseF: PIP5KECOD (1.6)
BPIP5Ke1bo1B1 A: a+b complex topologyX: Protein kinase/SAICAR synthase/ATP-grasp (From Homology)H: Protein kinase/SAICAR synthase/ATP-graspT: SAICAR synthaseF: PIP5KECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Protein Family Annotation Pfam Database Homepage

ChainsAccessionNameDescriptionCommentsSource
A, B
PF01504Phosphatidylinositol-4-phosphate 5-Kinase (PIP5K)Phosphatidylinositol-4-phosphate 5-Kinase- Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

ChainsPolymerMolecular FunctionBiological ProcessCellular Component
A, B
PROTEIN (PHOSPHATIDYLINOSITOL PHOSPHATE KINASE IIBETA)

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

ChainsEnzyme NameDescriptionCatalytic Residues
1-phosphatidylinositol-5-phosphate 4-kinase  M-CSA #662

Type II beta phosphotidylinositol phosphate kinase catalyses the phosphorylation of PI3P or PI5P on the 4-hydroxyl group and therefore it plays a central role in signal transduction. It has been shown to interact with its alpha isoform to enhance its enzymatic activity.

Defined by 2 residues: LYS:A-150ASP:A-278
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