Annotations: 4AZ3

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B	Peptidase_S10	e4az3B1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Peptidase_S10	ECOD (1.6)
A	Peptidase_S10	e4az3A1	A: a/b three-layered sandwiches	X: alpha/beta-Hydrolases (From Topology)	H: alpha/beta-Hydrolases (From Topology)	T: alpha/beta-Hydrolases	F: Peptidase_S10	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.40.50.12670	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold		CATH (4.3.0)
A	3.40.50.1820	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Alpha/Beta hydrolase fold, catalytic domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	PF00450	Serine carboxypeptidase (Peptidase_S10)	Serine carboxypeptidase		Domain
A	PF00450	Serine carboxypeptidase (Peptidase_S10)	Serine carboxypeptidase		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B	LYSOSOMAL PROTECTIVE PROTEIN 20 KDA CHAIN	enzyme regulator activity enzyme activator activity molecular function activator activity molecular function regulator activity serine-type exopeptidase activity peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type carboxypeptidase activity serine-type peptidase activity hydrolase activity exopeptidase activity catalytic activity carboxypeptidase activity	regulation of biological process catabolic process regulation of cellular process regulation of protein metabolic process autophagy biological regulation primary metabolic process protein catabolic process regulation of catabolic process regulation of macromolecule metabolic process regulation of autophagy macromolecule catabolic process regulation of primary metabolic process chaperone-mediated autophagy regulation of chaperone-mediated autophagy regulation of biological process catabolic process regulation of cellular process regulation of protein metabolic process autophagy biological regulation primary metabolic process protein catabolic process regulation of catabolic process regulation of macromolecule metabolic process regulation of autophagy macromolecule catabolic process regulation of primary metabolic process chaperone-mediated autophagy regulation of chaperone-mediated autophagy cellular process metabolic process protein metabolic process macromolecule metabolic process process utilizing autophagic mechanism regulation of metabolic process regulation of protein catabolic process cellular localization establishment of protein localization nitrogen compound transport transport intracellular transport establishment of localization localization protein transport establishment of localization in cell macromolecule localization intracellular protein localization intracellular protein transport regulation of protein stability regulation of biological quality proteolysis negative regulation of biological process negative regulation of protein catabolic process negative regulation of cellular process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process negative regulation of catabolic process negative regulation of metabolic process negative regulation of chaperone-mediated autophagy negative regulation of autophagy	cellular anatomical structure membrane extracellular region membrane-bounded organelle intracellular anatomical structure membrane-enclosed lumen lytic vacuole vacuolar lumen vacuole intracellular membrane-bounded organelle lysosomal lumen intracellular organelle lumen intracellular organelle organelle lumen cellular anatomical structure membrane extracellular region membrane-bounded organelle intracellular anatomical structure membrane-enclosed lumen lytic vacuole vacuolar lumen vacuole intracellular membrane-bounded organelle lysosomal lumen intracellular organelle lumen intracellular organelle organelle lumen organelle cytoplasm lysosome extracellular exosome extracellular vesicle extracellular organelle extracellular space vesicle extracellular membrane-bounded organelle intracellular vesicle cytoplasmic vesicle lumen endomembrane system cytoplasmic vesicle vesicle lumen azurophil granule secretory granule lumen azurophil granule lumen secretory granule primary lysosome secretory vesicle endoplasmic reticulum
A	LYSOSOMAL PROTECTIVE PROTEIN 32 KDA CHAIN	enzyme regulator activity enzyme activator activity molecular function activator activity molecular function regulator activity serine-type exopeptidase activity peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type carboxypeptidase activity serine-type peptidase activity hydrolase activity exopeptidase activity catalytic activity carboxypeptidase activity	regulation of biological process catabolic process regulation of cellular process regulation of protein metabolic process autophagy biological regulation primary metabolic process protein catabolic process regulation of catabolic process regulation of macromolecule metabolic process regulation of autophagy macromolecule catabolic process regulation of primary metabolic process chaperone-mediated autophagy regulation of chaperone-mediated autophagy regulation of biological process catabolic process regulation of cellular process regulation of protein metabolic process autophagy biological regulation primary metabolic process protein catabolic process regulation of catabolic process regulation of macromolecule metabolic process regulation of autophagy macromolecule catabolic process regulation of primary metabolic process chaperone-mediated autophagy regulation of chaperone-mediated autophagy cellular process metabolic process protein metabolic process macromolecule metabolic process process utilizing autophagic mechanism regulation of metabolic process regulation of protein catabolic process cellular localization establishment of protein localization nitrogen compound transport transport intracellular transport establishment of localization localization protein transport establishment of localization in cell macromolecule localization intracellular protein localization intracellular protein transport regulation of protein stability regulation of biological quality proteolysis negative regulation of biological process negative regulation of protein catabolic process negative regulation of cellular process negative regulation of protein metabolic process negative regulation of macromolecule metabolic process negative regulation of catabolic process negative regulation of metabolic process negative regulation of chaperone-mediated autophagy negative regulation of autophagy	cellular anatomical structure membrane extracellular region membrane-bounded organelle intracellular anatomical structure membrane-enclosed lumen lytic vacuole vacuolar lumen vacuole intracellular membrane-bounded organelle lysosomal lumen intracellular organelle lumen intracellular organelle organelle lumen cellular anatomical structure membrane extracellular region membrane-bounded organelle intracellular anatomical structure membrane-enclosed lumen lytic vacuole vacuolar lumen vacuole intracellular membrane-bounded organelle lysosomal lumen intracellular organelle lumen intracellular organelle organelle lumen organelle cytoplasm lysosome extracellular exosome extracellular vesicle extracellular organelle extracellular space vesicle extracellular membrane-bounded organelle intracellular vesicle cytoplasmic vesicle lumen endomembrane system cytoplasmic vesicle vesicle lumen azurophil granule secretory granule lumen azurophil granule lumen secretory granule primary lysosome secretory vesicle endoplasmic reticulum

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B	IPR001563	Peptidase S10, serine carboxypeptidase	Family
B	IPR018202	Serine carboxypeptidase, serine active site	Active Site
B	IPR033124	Serine carboxypeptidases, histidine active site	Active Site
B	IPR029058	Alpha/Beta hydrolase fold	Homologous Superfamily
A	IPR001563	Peptidase S10, serine carboxypeptidase	Family
A	IPR018202	Serine carboxypeptidase, serine active site	Active Site
A	IPR033124	Serine carboxypeptidases, histidine active site	Active Site
A	IPR029058	Alpha/Beta hydrolase fold	Homologous Superfamily

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B	Pharos: P10619	galactosialidosis ulcerative colitis abdominal aortic aneurysm astrocytic tumor Chronic hepatitis C heart disease intellectual disability non-immune hydrops fetalis pancreatic intraductal papillary-mucinous neoplasm wet macular degeneration acute myeloid leukemia breast cancer hydrops fetalis invasive ductal breast carcinoma ovarian cancer galactosialidosis ulcerative colitis abdominal aortic aneurysm astrocytic tumor Chronic hepatitis C heart disease intellectual disability non-immune hydrops fetalis pancreatic intraductal papillary-mucinous neoplasm wet macular degeneration acute myeloid leukemia breast cancer hydrops fetalis invasive ductal breast carcinoma ovarian cancer subependymal giant cell astrocytoma age-related macular degeneration celiac disease glioblastoma malignant pancreatic neoplasm pancreatic ductal adenocarcinoma
A	Pharos: P10619	galactosialidosis ulcerative colitis abdominal aortic aneurysm astrocytic tumor Chronic hepatitis C heart disease intellectual disability non-immune hydrops fetalis pancreatic intraductal papillary-mucinous neoplasm wet macular degeneration acute myeloid leukemia breast cancer hydrops fetalis invasive ductal breast carcinoma ovarian cancer galactosialidosis ulcerative colitis abdominal aortic aneurysm astrocytic tumor Chronic hepatitis C heart disease intellectual disability non-immune hydrops fetalis pancreatic intraductal papillary-mucinous neoplasm wet macular degeneration acute myeloid leukemia breast cancer hydrops fetalis invasive ductal breast carcinoma ovarian cancer subependymal giant cell astrocytoma age-related macular degeneration celiac disease glioblastoma malignant pancreatic neoplasm pancreatic ductal adenocarcinoma

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.