Annotations: 3JYH

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	Peptidase_S28_2nd	e3jyhA2	A: alpha arrays	X: Dipeptidyl-peptidase 2 helical domain (From Topology)	H: Dipeptidyl-peptidase 2 helical domain (From Topology)	T: Dipeptidyl-peptidase 2 helical domain	F: Peptidase_S28_2nd	ECOD (1.6)
A	Peptidase_S28_1st	e3jyhA1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Peptidase_S28_1st	ECOD (1.6)
B	Peptidase_S28_2nd	e3jyhB2	A: alpha arrays	X: Dipeptidyl-peptidase 2 helical domain (From Topology)	H: Dipeptidyl-peptidase 2 helical domain (From Topology)	T: Dipeptidyl-peptidase 2 helical domain	F: Peptidase_S28_2nd	ECOD (1.6)
B	Peptidase_S28_1st	e3jyhB1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Peptidase_S28_1st	ECOD (1.6)
C	Peptidase_S28_2nd	e3jyhC2	A: alpha arrays	X: Dipeptidyl-peptidase 2 helical domain (From Topology)	H: Dipeptidyl-peptidase 2 helical domain (From Topology)	T: Dipeptidyl-peptidase 2 helical domain	F: Peptidase_S28_2nd	ECOD (1.6)
C	Peptidase_S28_1st	e3jyhC1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Peptidase_S28_1st	ECOD (1.6)
D	Peptidase_S28_2nd	e3jyhD2	A: alpha arrays	X: Dipeptidyl-peptidase 2 helical domain (From Topology)	H: Dipeptidyl-peptidase 2 helical domain (From Topology)	T: Dipeptidyl-peptidase 2 helical domain	F: Peptidase_S28_2nd	ECOD (1.6)
D	Peptidase_S28_1st	e3jyhD1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Peptidase_S28_1st	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 (4.3.0)
A	1.20.120.980	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Serine carboxypeptidase S28, SKS domain	CATH (4.3.0)
B	3.40.50.1820	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Alpha/Beta hydrolase fold, catalytic domain	CATH (4.3.0)
B	1.20.120.980	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Serine carboxypeptidase S28, SKS domain	CATH (4.3.0)
C	3.40.50.1820	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Alpha/Beta hydrolase fold, catalytic domain	CATH (4.3.0)
C	1.20.120.980	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Serine carboxypeptidase S28, SKS domain	CATH (4.3.0)
D	3.40.50.1820	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Alpha/Beta hydrolase fold, catalytic domain	CATH (4.3.0)
D	1.20.120.980	Mainly Alpha	Up-down Bundle	Four Helix Bundle (Hemerythrin (Met), subunit A)	Serine carboxypeptidase S28, SKS domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B, C, D	PF05577	Serine carboxypeptidase S28 (Peptidase_S28)	Serine carboxypeptidase S28	These serine proteases include several eukaryotic enzymes such as lysosomal Pro-X carboxypeptidase, dipeptidyl-peptidase II, and thymus-specific serine peptidase.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B, C, D	Dipeptidyl-peptidase 2	peptidase activity catalytic activity, acting on a protein dipeptidyl-peptidase activity hydrolase activity exopeptidase activity catalytic activity serine-type exopeptidase activity serine hydrolase activity serine-type peptidase activity aminopeptidase activity	catabolic process protein catabolic process in the vacuole lysosomal protein catabolic process metabolic process cellular process primary metabolic process protein catabolic process protein metabolic process macromolecule metabolic process macromolecule catabolic process proteolysis	membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure Golgi apparatus organelle cytoplasm intracellular membrane-bounded organelle endomembrane system vesicle extracellular region extracellular exosome extracellular vesicle extracellular organelle membrane-bounded organelle intracellular organelle cellular anatomical structure intracellular anatomical structure Golgi apparatus organelle cytoplasm intracellular membrane-bounded organelle endomembrane system vesicle extracellular region extracellular exosome extracellular vesicle extracellular organelle extracellular space extracellular membrane-bounded organelle lytic vacuole intracellular vesicle membrane-enclosed lumen cytoplasmic vesicle lumen vacuolar lumen intracellular organelle lumen cytoplasmic vesicle lysosome vesicle lumen azurophil granule vacuole secretory granule lumen azurophil granule lumen organelle lumen secretory granule primary lysosome secretory vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B, C, D	IPR008758	Peptidase S28	Family
A, B, C, D	IPR029058	Alpha/Beta hydrolase fold	Homologous Superfamily
A, B, C, D	IPR042269	Serine carboxypeptidase S28, SKS domain	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B, C, D	Pharos: Q9UHL4	Necrosis atypical teratoid rhabdoid tumor ovarian cancer medulloblastoma subependymal giant cell astrocytoma

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.