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7QE9

Human cationic trypsin (TRY1) complexed with serine protease inhibitor Kazal type 1 N34S (SPINK1 N34S)

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(A, B)
Trypsin-1polymer22424121.22UniProt (P07477)
Pfam (PF00089)
Homo sapiens (Human)Beta-trypsin,Cationic trypsinogen,Serine protease 1,Trypsin I
2C, D
(D, C)
Serine protease inhibitor Kazal-type 1polymer616714.62UniProt (P00995)
Pfam (PF00050)
Homo sapiens (Human)Pancreatic secretory trypsin inhibitor,Tumor-associated trypsin inhibitor,TATI
3E, F, G, H
(A, D, C)
SULFATE IONnon-polymer96.14Chemie (SO4)
4I, J, K, L
(A, B, D, C)
waterwater18.0231Chemie (HOH)
Sequence modifications
A, B: 24 - 247 (UniProt: P07477)
PDBExternal DatabaseDetails
Ala 200Ser 200engineered mutation
D, C: 24 - 79 (UniProt: P00995)
PDBExternal DatabaseDetails
Gly 19-expression tag
Pro 20-expression tag
Gly 21-expression tag
Tyr 22-expression tag
Leu 23-expression tag
Ser 34Asn 34engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains4
Total formula weight61671.6
Non-Polymers*Number of molecules4
Total formula weight384.3
All*Total formula weight62055.8
*Water molecules are not included.

246031

PDB entries from 2025-12-10

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