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2R9P

Human mesotrypsin complexed with bovine pancreatic trypsin inhibitor(BPTI)

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C, D
(A, B, C, D)
Trypsin-3polymer22424257.54UniProt (P35030)
Pfam (PF00089)
Homo sapiens (human)Trypsin III, Brain trypsinogen, Mesotrypsinogen, Trypsin IV, Serine protease 3, Serine protease 4
2E, F, G, H
(I, E, F, G)
Pancreatic trypsin inhibitorpolymer586527.64UniProt (P00974)
Pfam (PF00014)
Bos taurus (cattle)Basic protease inhibitor, BPI, BPTI, Aprotinin
3AA, BA, I, J, K...
(G, A, B, C, D...)
SULFATE IONnon-polymer96.120Chemie (SO4)
4CA, DA, EA, FA, GA...
(A, B, C, D, I...)
waterwater18.0633Chemie (HOH)
Sequence modifications
A, B, C, D: 16 - 246 (UniProt: P35030)
PDBExternal DatabaseDetails
Ala 195Ser 257engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains8
Total formula weight123140.1
Non-Polymers*Number of molecules20
Total formula weight1921.3
All*Total formula weight125061.4
*Water molecules are not included.

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PDB entries from 2025-06-11

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