Annotations: 1PTD

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1ptda_	Alpha and beta proteins (a/b)	TIM beta/alpha-barrel	PLC-like phosphodiesterases	Bacterial PLC	Phosphatidylinositol-specific phospholipase C	(Bacillus cereus ) [TaxId: 1396 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	PLC-like phosphodiesterases	8043840	3000615	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF00388	e1ptdA1	A: a/b barrels	X: TIM beta/alpha-barrel	H: TIM barrels (From Topology)	T: TIM barrels	F: PF00388	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.20.20.190	Alpha Beta	Alpha-Beta Barrel	TIM Barrel	Phosphatidylinositol (PI) phosphodiesterase	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF00388	Phosphatidylinositol-specific phospholipase C, X domain (PI-PLC-X)	Phosphatidylinositol-specific phospholipase C, X domain	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	PHOSPHATIDYLINOSITOL-SPECIFIC PHOSPHOLIPASE C	phosphorus-oxygen lyase activity phosphatidylinositol diacylglycerol-lyase activity lyase activity catalytic activity phosphoric ester hydrolase activity hydrolase activity, acting on ester bonds phosphoric diester hydrolase activity hydrolase activity	lipid catabolic process organic substance metabolic process catabolic process primary metabolic process metabolic process organic substance catabolic process lipid metabolic process	extracellular region cellular anatomical entity

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR000909	Phosphatidylinositol-specific phospholipase C, X domain	Domain
A	IPR017946	PLC-like phosphodiesterase, TIM beta/alpha-barrel domain superfamily	Homologous Superfamily

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

Chains	Enzyme Name	Description	Catalytic Residues
A	phosphatidylinositol diacylglycerol-lyase M-CSA #26	Phosphatidylinositol-specific phospholipase C (PI-PLC) is a ubiquitous enzyme involved in a vast range of cellular signalling cascades. Prokaryotic PLCs act as virulence factors in some bacteria, catalysing the hydrolysis of the sn-3 phosphodiester bond of phosphatidylinositol (PI) producing diacylglycerol (DAG) and inositol 1-phosphate (I(1)P). For the bacterial enzyme, the main product is the cyclic intermediate, myo-inositol 1,2-cyclic phosphate, which is rapidly hydrolysed to I(1)P by the eukaryotic PI-PLCs whereas the mammalian enzyme undergoes complete catalysis. PI-PLC from Bacillus cereus, and the nearly identical enzyme from B. thuringiensis have been used as model systems for the study of IP-PLCs as a whole. Bacterial PI-PLCs are metal-ion-independent. This is in contrast to mammalian PI-PLCs which are Ca(II) dependent. The R69D mutant of B. thuringiensis PI-PLC is calcium dependent and has been used to investigate the role of calcium in catalysis by PI-PLCs [PMID:16042375].	Defined by 5 residues: HIS:A-32ASP:A-33ARG:A-69HIS:A-82ASP:A-274 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 3.1.4.10 (PDB Primary Data) Search M-CSA Motif + EC 3.1.4.10

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM133198.