4EME

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Peptidase_M18_2nd	e4emeA2	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Peptidase_M18_2nd	ECOD (1.6)
A	Peptidase_M18_1st	e4emeA1	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Zn-dependent exopeptidases (From Topology)	T: Zn-dependent exopeptidases	F: Peptidase_M18_1st	ECOD (1.6)
B	Peptidase_M18_2nd	e4emeB6	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Peptidase_M18_2nd	ECOD (1.6)
B	Peptidase_M18_1st	e4emeB5	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Zn-dependent exopeptidases (From Topology)	T: Zn-dependent exopeptidases	F: Peptidase_M18_1st	ECOD (1.6)
C	Peptidase_M18_2nd	e4emeC6	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Peptidase_M18_2nd	ECOD (1.6)
C	Peptidase_M18_1st	e4emeC5	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Zn-dependent exopeptidases (From Topology)	T: Zn-dependent exopeptidases	F: Peptidase_M18_1st	ECOD (1.6)
D	Peptidase_M18_2nd	e4emeD6	A: beta barrels	X: cradle loop barrel	H: RIFT-related	T: Alanine racemase-C	F: Peptidase_M18_2nd	ECOD (1.6)
D	Peptidase_M18_1st	e4emeD5	A: a/b three-layered sandwiches	X: Phosphorylase/hydrolase-like	H: Zn-dependent exopeptidases (From Topology)	T: Zn-dependent exopeptidases	F: Peptidase_M18_1st	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

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)
A	2.30.250.10	Mainly Beta	Roll	Aminopeptidase i, Domain 2	Aminopeptidase i, Domain 2	CATH (4.3.0)
B	3.40.630.10	Alpha Beta	3-Layer(aba) Sandwich	Aminopeptidase	Zn peptidases	CATH (4.3.0)
B	2.30.250.10	Mainly Beta	Roll	Aminopeptidase i, Domain 2	Aminopeptidase i, Domain 2	CATH (4.3.0)
C	3.40.630.10	Alpha Beta	3-Layer(aba) Sandwich	Aminopeptidase	Zn peptidases	CATH (4.3.0)
C	2.30.250.10	Mainly Beta	Roll	Aminopeptidase i, Domain 2	Aminopeptidase i, Domain 2	CATH (4.3.0)
D	3.40.630.10	Alpha Beta	3-Layer(aba) Sandwich	Aminopeptidase	Zn peptidases	CATH (4.3.0)
D	2.30.250.10	Mainly Beta	Roll	Aminopeptidase i, Domain 2	Aminopeptidase i, Domain 2	CATH (4.3.0)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	M18 aspartyl aminopeptidase	cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding peptidase activity catalytic activity, acting on a protein hydrolase activity metallopeptidase activity aminopeptidase activity metalloaminopeptidase activity exopeptidase activity cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding peptidase activity catalytic activity, acting on a protein hydrolase activity metallopeptidase activity aminopeptidase activity metalloaminopeptidase activity exopeptidase activity catalytic activity metalloexopeptidase activity	cellular catabolic process organic substance metabolic process catabolic process cellular metabolic process metabolic process cellular process organic substance catabolic process peptide metabolic process peptide catabolic process organonitrogen compound metabolic process proteolysis primary metabolic process protein metabolic process macromolecule metabolic process	intracellular anatomical structure cytoplasm cellular anatomical entity