Annotations: 2BO9

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
B	d2bo9b1	Alpha and beta proteins (a+b)	Cystatin-like	Cystatin/monellin	Latexin-like	Latexin	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
D	d2bo9d1	Alpha and beta proteins (a+b)	Cystatin-like	Cystatin/monellin	Latexin-like	Latexin	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d2bo9a1	Alpha and beta proteins (a/b)	Phosphorylase/hydrolase-like	Zn-dependent exopeptidases	Pancreatic carboxypeptidases	Carboxypeptidase A	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
C	d2bo9c_	Alpha and beta proteins (a/b)	Phosphorylase/hydrolase-like	Zn-dependent exopeptidases	Pancreatic carboxypeptidases	Carboxypeptidase A	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
B	SCOP2 Family	Latexin-like	8026053	4003442	SCOP2 (2022-06-29)
B	SCOP2 Family	Latexin-like	8026055	4003442	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Cystatin/monellin	8038432	3000441	SCOP2 (2022-06-29)
B	SCOP2 Superfamily	Cystatin/monellin	8038434	3000441	SCOP2 (2022-06-29)
D	SCOP2B Superfamily	Cystatin/monellin	8038434	3000441	SCOP2B (2022-06-29)
D	SCOP2B Superfamily	Cystatin/monellin	8038432	3000441	SCOP2B (2022-06-29)
A	SCOP2 Family	Pancreatic carboxypeptidase-like	8026050	4000582	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Zn-dependent exopeptidases	8038429	3000662	SCOP2 (2022-06-29)
C	SCOP2B Superfamily	Zn-dependent exopeptidases	8038429	3000662	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
B		e2bo9B1	A: Cystatin-like	X: Cystatin/monellin	H: Cystatin/monellin	T: Latexin_N	F:	ECOD (20:10:01)
D		e2bo9D1	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: DUF3197	F:	ECOD (20:10:01)
A		e2bo9A1	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: NAD_binding_1	F:	ECOD (20:10:01)
C		e2bo9C1	A: C-terminal subdomain in Lon-related proteases catalytic domains	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: NAD_binding_1	F:	ECOD (20:10:01)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
B	3.10.450.10	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)
D	3.10.450.10	Alpha Beta	Roll	Nuclear Transport Factor 2	Chain: A,	CATH (4.3.0)
A	3.40.630.10	Alpha Beta	3-Layer(aba) Sandwich	Aminopeptidase	Zn peptidases	CATH (4.3.0)
C	3.40.630.10	Alpha Beta	3-Layer(aba) Sandwich	Aminopeptidase	Zn peptidases	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B, D	PF06907	Latexin (LXN)	Latexin	This entry consists of several animal specific latexin proteins. Latexin is a carboxypeptidase A inhibitor and is expressed in a cell type-specific manner in both central and peripheral nervous systems in the rat [1]. It consists of two cystatin-like ...	This entry consists of several animal specific latexin proteins. Latexin is a carboxypeptidase A inhibitor and is expressed in a cell type-specific manner in both central and peripheral nervous systems in the rat [1]. It consists of two cystatin-like domains, consisting of an alpha-helix enveloped by a curved beta-sheet [2,3]. These domains packed against each other, forming an interface to which the enzyme is bound.	Domain
A, C	PF00246	Zinc carboxypeptidase (Peptidase_M14)	Zinc carboxypeptidase		Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
B, D	HUMAN LATEXIN	enzyme regulator activity molecular function inhibitor activity peptidase regulator activity molecular function regulator activity enzyme inhibitor activity peptidase inhibitor activity endopeptidase regulator activity metalloendopeptidase inhibitor activity endopeptidase inhibitor activity heparin binding glycosaminoglycan binding binding carbohydrate derivative binding sulfur compound binding	response to stimulus defense response response to stress inflammatory response multicellular organismal process detection of external stimulus system process nervous system process response to external stimulus sensory perception of temperature stimulus sensory perception of pain detection of temperature stimulus involved in sensory perception response to temperature stimulus detection of abiotic stimulus response to stimulus defense response response to stress inflammatory response multicellular organismal process detection of external stimulus system process nervous system process response to external stimulus sensory perception of temperature stimulus sensory perception of pain detection of temperature stimulus involved in sensory perception response to temperature stimulus detection of abiotic stimulus detection of stimulus sensory perception detection of temperature stimulus response to abiotic stimulus detection of stimulus involved in sensory perception detection of temperature stimulus involved in sensory perception of pain	cellular anatomical structure intracellular anatomical structure cytoplasm extracellular region extracellular space
A, C	CARBOXYPEPTIDASE A4	peptidase activity catalytic activity, acting on a protein metallocarboxypeptidase activity hydrolase activity metallopeptidase activity exopeptidase activity catalytic activity metalloexopeptidase activity carboxypeptidase activity cation binding transition metal ion binding zinc ion binding ion binding binding peptidase activity catalytic activity, acting on a protein metallocarboxypeptidase activity hydrolase activity metallopeptidase activity exopeptidase activity catalytic activity metalloexopeptidase activity carboxypeptidase activity cation binding transition metal ion binding zinc ion binding ion binding binding metal ion binding small molecule binding	catabolic process regulation of hormone levels biological regulation metabolic process cellular process regulation of biological quality hormone metabolic process hormone catabolic process peptide metabolic process peptide catabolic process proteolysis primary metabolic process protein metabolic process macromolecule metabolic process	cellular anatomical structure extracellular region extracellular space

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
B, D	IPR009684	Latexin	Family
B, D	IPR046350	Cystatin superfamily	Homologous Superfamily
B, D	IPR049897	Latexin-type cystatin domain	Domain
A, C	IPR057247	Zinc carboxypeptidases, zinc-binding region 2	Binding Site
A, C	IPR036990	Metallocarboxypeptidase-like, propeptide	Homologous Superfamily
A, C	IPR034248	Carboxypeptidase A, carboxypeptidase domain	Domain
A, C	IPR057246	Zinc carboxypeptidases, zinc-binding region 1	Binding Site
A, C	IPR003146	Carboxypeptidase, activation peptide	Domain
A, C	IPR000834	Peptidase M14, carboxypeptidase A	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B, D	Pharos: Q9BS40	melanoma Chromosomal Instability pilocytic astrocytoma breast cancer cystic fibrosis invasive ductal breast carcinoma lung cancer malignant ependymoma ovarian cancer polycystic ovary syndrome endogenous depression large cell medulloblastoma lung carcinoma malignant mesothelioma nasopharyngeal carcinoma melanoma Chromosomal Instability pilocytic astrocytoma breast cancer cystic fibrosis invasive ductal breast carcinoma lung cancer malignant ependymoma ovarian cancer polycystic ovary syndrome endogenous depression large cell medulloblastoma lung carcinoma malignant mesothelioma nasopharyngeal carcinoma pancreatic ductal adenocarcinoma cutaneous melanoma glioblastoma lung adenocarcinoma malignant colon neoplasm malignant pancreatic neoplasm osteosarcoma
A, C	Pharos: Q9UI42	acute pancreatitis Silver-Russell syndrome

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. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.