Annotations: 6NFF

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PepX_C	e6nffA1	A: beta sandwiches	X: jelly-roll	H: Concanavalin A-like	T: Galactose-binding domain-like	F: PepX_C	ECOD (1.6)
A	PepX_N	e6nffA3	A: alpha bundles	X: CH domain-like	H: X-Prolyl dipeptidyl aminopeptidase PepX, N-terminal domain (From Topology)	T: X-Prolyl dipeptidyl aminopeptidase PepX, N-terminal domain	F: PepX_N	ECOD (1.6)
A	Hydrolase_4	e6nffA2	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Hydrolase_4	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.1820	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Alpha/Beta hydrolase fold, catalytic domain	CATH (utative)
A	1.10.246.70	Mainly Alpha	Orthogonal Bundle	Serum Albumin	Chain A, Domain 1	CATH (utative)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF08530	X-Pro dipeptidyl-peptidase C-terminal non-catalytic domain (PepX_C)	X-Pro dipeptidyl-peptidase C-terminal non-catalytic domain	This domain contains a beta sandwich domain.	Domain
A	PF09168	X-Prolyl dipeptidyl aminopeptidase PepX, N-terminal (PepX_N)	X-Prolyl dipeptidyl aminopeptidase PepX, N-terminal	Members of this family adopt a secondary structure consisting of a helical bundle of eight alpha helices and three beta strands, the last alpha helix connecting to the first strand of the catalytic domain. The first strand of the N-terminus also form ...	Members of this family adopt a secondary structure consisting of a helical bundle of eight alpha helices and three beta strands, the last alpha helix connecting to the first strand of the catalytic domain. The first strand of the N-terminus also forms a small parallel beta sheet with strand 5' of catalytic domain. The domain mediates dimerisation of the protein, with two proline residues present in the domain being critical for interaction [1].	Domain
A	PF02129	X-Pro dipeptidyl-peptidase (S15 family) (Peptidase_S15)	X-Pro dipeptidyl-peptidase (S15 family)		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	Xaa-Pro dipeptidyl-peptidase	peptidase activity catalytic activity, acting on a protein dipeptidyl-peptidase activity hydrolase activity exopeptidase activity catalytic activity serine hydrolase activity serine-type peptidase activity aminopeptidase activity	proteolysis metabolic process cellular process primary metabolic process protein metabolic process macromolecule metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036313	PepX, N-terminal domain superfamily	Homologous Superfamily
A	IPR050585	Xaa-Pro dipeptidyl-peptidase/Cocaine esterase	Family
A	IPR000383	Xaa-Pro dipeptidyl-peptidase-like domain	Domain
A	IPR013736	Xaa-Pro dipeptidyl-peptidase, C-terminal	Domain
A	IPR008252	Peptidase S15, X-Pro dipeptidyl-peptidase	Family
A	IPR008979	Galactose-binding-like domain superfamily	Homologous Superfamily
A	IPR015251	X-Prolyl dipeptidyl aminopeptidase PepX, N-terminal domain	Domain
A	IPR029058	Alpha/Beta hydrolase fold	Homologous Superfamily
A	IPR005674	CocE/Serine esterase	Family

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 R01GM157729.