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3ATK

Crystal structure of trypsin complexed with cycloheptanamine

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Cationic trypsinpolymer22323324.31UniProt (P00760)
Pfam (PF00089)
Bos taurus (bovine)Beta-trypsin
2B
(A)
CALCIUM IONnon-polymer40.11Chemie (CA)
3C, D
(A)
DIMETHYL SULFOXIDEnon-polymer78.12Chemie (DMS)
4E
(A)
cycloheptanaminenon-polymer113.21Chemie (SZ1)
5F
(A)
waterwater18.0301Chemie (HOH)
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight23324.3
Non-Polymers*Number of molecules4
Total formula weight309.5
All*Total formula weight23633.8
*Water molecules are not included.

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PDB entries from 2025-07-23

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