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5QCH

Crystal structure of human Cathepsin-S with bound ligand

Entity
Entity IDChain IDDescriptionTypeChain lengthFormula weightNumber of moleculesDB Name (Accession)Biological sourceDescriptive keywords
1A, B, C, D
(A, B, C, D)
Cathepsin Spolymer22324516.54UniProt (P25774)
Pfam (PF00112)
Homo sapiens (Human)
2E, G, J, L
(A, B, C, D)
SULFATE IONnon-polymer96.14Chemie (SO4)
3F, I, K, N
(A, B, C, D)
2-(3-[3-({3-[(benzylamino)methyl]-4-chlorophenyl}ethynyl)-4-chlorophenyl]-1-{3-[(3S)-3-methylmorpholin-4-yl]propyl}-1,4,6,7-tetrahydro-5H-pyrazolo[4,3-c]pyridin-5-yl)-2-oxoacetamidenon-polymer699.74Chemie (BJS)
4H, M
(B, D)
GLYCEROLnon-polymer92.12Chemie (GOL)
5O, P, Q, R
(A, B, C, D)
waterwater18.01201Chemie (HOH)
Sequence modifications
A, B, C, D: 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 chains4
Total formula weight98065.9
Non-Polymers*Number of molecules10
Total formula weight3367.1
All*Total formula weight101433.0
*Water molecules are not included.

247947

PDB entries from 2026-01-21

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