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3AI8

Cathepsin B in complex with the nitroxoline

Functional Information from GO Data
ChainGOidnamespacecontents
A0006508biological_processproteolysis
A0008234molecular_functioncysteine-type peptidase activity
B0006508biological_processproteolysis
B0008234molecular_functioncysteine-type peptidase activity
Functional Information from PDB Data
site_idAC1
Number of Residues12
DetailsBINDING SITE FOR RESIDUE HNQ B 255
ChainResidue
BGLN23
BTRP221
BHOH276
BHOH344
BGLY24
BSER25
BCYS26
BGLY27
BHIS110
BHIS111
BTHR120
BGLY121

site_idAC2
Number of Residues10
DetailsBINDING SITE FOR RESIDUE HNQ A 255
ChainResidue
AGLN23
AGLY24
ASER25
ACYS26
AGLY27
AHIS110
AHIS111
ATHR120
AHIS199
ATRP221

Functional Information from PROSITE/UniProt
site_idPS00139
Number of Residues12
DetailsTHIOL_PROTEASE_CYS Eukaryotic thiol (cysteine) proteases cysteine active site. QGsCGSCWAfGA
ChainResidueDetails
BGLN23-ALA34

site_idPS00639
Number of Residues11
DetailsTHIOL_PROTEASE_HIS Eukaryotic thiol (cysteine) proteases histidine active site. GGHAIRILGWG
ChainResidueDetails
BGLY197-GLY207

site_idPS00640
Number of Residues20
DetailsTHIOL_PROTEASE_ASN Eukaryotic thiol (cysteine) proteases asparagine active site. YWLvANSWntdWGdnGFFkI
ChainResidueDetails
BTYR214-ILE233

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues6
DetailsActive site: {"evidences":[{"source":"PubMed","id":"9299326","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues2
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"UniProtKB","id":"P10605","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"source":"PubMed","id":"3463996","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

243531

PDB entries from 2025-10-22

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