Annotations: 9MNB

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
A [auth L]	Light Chain	IGKV1	Kappa	tryptase alpha/beta-1	SAbDab (2026-04-24)
C [auth H]	Heavy Chain	IGHV4	-	tryptase alpha/beta-1	SAbDab (2026-04-24)
D [auth F]	Light Chain	IGKV1	Kappa	tryptase alpha/beta-1	SAbDab (2026-04-24)
E	Heavy Chain	IGHV1	-	tryptase alpha/beta-1	SAbDab (2026-04-24)

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth L]	Light chain of E104.v2 Fab	-	-	-
B [auth A]	Tryptase alpha/beta-1	peptidase activity catalytic activity, acting on a protein serine hydrolase activity serine-type peptidase activity hydrolase activity serine-type endopeptidase activity catalytic activity endopeptidase activity identical protein binding protein binding binding	cellular component organization cellular component disassembly extracellular matrix disassembly extracellular matrix organization cellular process cellular component organization or biogenesis extracellular structure organization external encapsulating structure organization proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process response to stimulus cellular component organization cellular component disassembly extracellular matrix disassembly extracellular matrix organization cellular process cellular component organization or biogenesis extracellular structure organization external encapsulating structure organization proteolysis metabolic process primary metabolic process protein metabolic process macromolecule metabolic process response to stimulus defense response response to stress	cellular anatomical structure extracellular region
C [auth H]	Heavy chain of E104v2 Fab	-	-	-
D [auth F]	Light chain of E82.AS Fab	-	-	-
E	Heavy chain of E82.AS Fab	-	-	-
F [auth K]	Anti-human kappa light chain VHH	-	-	-

Chains	Accession	Name	Type
B [auth A]	IPR009003	Peptidase S1, PA clan	Homologous Superfamily
B [auth A]	IPR001314	Peptidase S1A, chymotrypsin family	Family
B [auth A]	IPR033116	Serine proteases, trypsin family, serine active site	Active Site
B [auth A]	IPR001254	Serine proteases, trypsin domain	Domain
B [auth A]	IPR018114	Serine proteases, trypsin family, histidine active site	Active Site
B [auth A]	IPR043504	Peptidase_S1_PA_chymotrypsin	Unknown

Chains	Drug Target	Associated Disease
B [auth A]	: Q15661	connective tissue disease Flushing contact dermatitis irritable bowel syndrome psoriasis cystic fibrosis lung adenocarcinoma non-small cell lung carcinoma pancreatic intraductal papillary-mucinous carcinoma primary dysautonomia dysautonomia invasive ductal breast carcinoma lung cancer osteosarcoma pancreatic intraductal papillary-mucinous neoplasm connective tissue disease Flushing contact dermatitis irritable bowel syndrome psoriasis cystic fibrosis lung adenocarcinoma non-small cell lung carcinoma pancreatic intraductal papillary-mucinous carcinoma primary dysautonomia dysautonomia invasive ductal breast carcinoma lung cancer osteosarcoma pancreatic intraductal papillary-mucinous neoplasm Ehlers-Danlos syndrome malignant pancreatic neoplasm pancreatic ductal adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia

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.

9MNB | pdb_00009mnb