3IEH | pdb_00003ieh

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	AstE_AspA_N	e3iehA1	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Zn-dependent exopeptidases (From Topology)	T: Zn-dependent exopeptidases	F: AstE_AspA_N	ECOD (1.6)

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.630.10	Alpha Beta	3-Layer(aba) Sandwich	Aminopeptidase	Zn peptidases	CATH (4.3.0)

Chains	Accession	Name	Description	Comments	Source
A	PF04952	AstE/AspA barrel-sandwich hybrid domain (AstE_AspA_hybrid)	AstE/AspA barrel-sandwich hybrid domain	This entry represents the barrel-sandwich hybrid domain found in Succinylglutamate desuccinylase (AstE), aspartoacylase (AspA) and related enzymes. AstE catalyses the fifth and last step in arginine catabolism by the arginine succinyltransferase path ...	This entry represents the barrel-sandwich hybrid domain found in Succinylglutamate desuccinylase (AstE), aspartoacylase (AspA) and related enzymes. AstE catalyses the fifth and last step in arginine catabolism by the arginine succinyltransferase pathway whereas AspA cleaves acylaspartate into a fatty acid and aspartate. Mutations in human AspA lead to Canavan disease disease [1]. The domain represented by this entry has similarity to known barrel-sandwich domains that are defined by sandwich of half-barrel shaped beta-sheets. This domain is also described as shielding domain as it was found to cover the enzyme active site and thus limiting its accessibility [2].	Domain

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Putative metallopeptidase	peptidase activity catalytic activity, acting on a protein metallocarboxypeptidase activity hydrolase activity metallopeptidase activity exopeptidase activity catalytic activity metalloexopeptidase activity carboxypeptidase activity hydrolase activity, acting on ester bonds cation binding transition metal ion binding zinc ion binding ion binding peptidase activity catalytic activity, acting on a protein metallocarboxypeptidase activity hydrolase activity metallopeptidase activity exopeptidase activity catalytic activity metalloexopeptidase activity carboxypeptidase activity hydrolase activity, acting on ester bonds cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding	proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	-