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5QCA

Crystal structure of human Cathepsin-S with bound ligand

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B
(A, B)
Cathepsin Spolymer22324516.52UniProt (P25774)
Pfam (PF00112)
Homo sapiens (Human)
2C, G
(A, B)
1-{4-[(2-chloro-5-{1-[3-(4-cyclopropylpiperazin-1-yl)propyl]-5-(methylsulfonyl)-4,5,6,7-tetrahydro-1H-pyrazolo[4,3-c]pyridin-3-yl}phenyl)ethynyl]phenyl}-N-[(4-chlorophenyl)methyl]methanaminenon-polymer731.82Chemie (BGJ)
3D, E, F, H
(A, B)
SULFATE IONnon-polymer96.14Chemie (SO4)
4I, J
(A, B)
waterwater18.0355Chemie (HOH)
Sequence modifications
A, B: 0 - 217 (UniProt: P25774)
PDBExternal DatabaseDetails
Ser 25Cys 139engineered mutation
Leu 218-expression tag
Gln 219-expression tag
Gly 220-expression tag
Gly 221-expression tag
Gly 222-expression tag
Sequence viewer
Contents of the asymmetric unit
PolymersNumber of chains2
Total formula weight49032.9
Non-Polymers*Number of molecules6
Total formula weight1847.8
All*Total formula weight50880.7
*Water molecules are not included.

247536

PDB entries from 2026-01-14

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