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Human mesotrypsin (PRSS3) unliganded and in autoinhibited (E*) conformation

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A
(A)
Trypsin-3polymer22424287.51UniProt (P35030)
Pfam (PF00089)
Homo sapiens (human)Brain trypsinogen,Mesotrypsinogen,Serine protease 3,Serine protease 4,Trypsin III,Trypsin IV
2B, C
(A)
SULFATE IONnon-polymer96.12Chemie (SO4)
3D
(A)
CALCIUM IONnon-polymer40.11Chemie (CA)
4E
(A)
ACETATE IONnon-polymer59.01Chemie (ACT)
5F
(A)
GLYCEROLnon-polymer92.11Chemie (GOL)
6G
(A)
waterwater18.0200Chemie (HOH)
Sequence modifications
A: 16 - 246 (UniProt: P35030)
PDBExternal DatabaseDetails
Ala 195Ser 257engineered mutation
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains1
Total formula weight24287.5
Non-Polymers*Number of molecules5
Total formula weight383.3
All*Total formula weight24670.8
*Water molecules are not included.

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PDB entries from 2025-06-25

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