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5QCF

Crystal structure of human Cathepsin-S with bound ligand

Functional Information from GO Data
ChainGOidnamespacecontents
A0006508biological_processproteolysis
A0008234molecular_functioncysteine-type peptidase activity
Functional Information from PDB Data
site_idAC1
Number of Residues17
Detailsbinding site for residue BJD A 901
ChainResidue
ALYS41
AGLY165
AASN175
APHE211
ASO4902
AHOH1008
AHOH1008
AHOH1039
AHOH1073
APHE70
ATYR118
AALA140
AARG141
AASN161
AVAL162
AASN163
AHIS164

site_idAC2
Number of Residues11
Detailsbinding site for residue SO4 A 902
ChainResidue
AGLN19
AGLY23
AALA24
ASER25
AASN163
AHIS164
ABJD901
AHOH1020
AHOH1053
AHOH1101
AHOH1142

site_idAC3
Number of Residues8
Detailsbinding site for residue GOL A 903
ChainResidue
ALEU38
ATHR42
AALA108
ATHR109
AARG141
APRO143
APHE146
AILE217

Functional Information from PROSITE/UniProt
site_idPS00639
Number of Residues11
DetailsTHIOL_PROTEASE_HIS Eukaryotic thiol (cysteine) proteases histidine active site. VNHGVLVVGYG
ChainResidueDetails
AVAL162-GLY172

site_idPS00640
Number of Residues20
DetailsTHIOL_PROTEASE_ASN Eukaryotic thiol (cysteine) proteases asparagine active site. YWLvKNSWghnFGeeGYIrM
ChainResidueDetails
ATYR179-MET198

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues3
DetailsActive site: {"evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idMCSA1
Number of Residues4
DetailsM-CSA 814
ChainResidueDetails
AGLN19electrostatic stabiliser
ASER25nucleofuge, nucleophile, proton acceptor, proton donor
AHIS164proton acceptor, proton donor
AASN184electrostatic stabiliser

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PDB entries from 2026-01-14

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