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3KSE

Unreduced cathepsin L in complex with stefin A

Functional Information from GO Data
ChainGOidnamespacecontents
A0006508biological_processproteolysis
A0008234molecular_functioncysteine-type peptidase activity
B0006508biological_processproteolysis
B0008234molecular_functioncysteine-type peptidase activity
C0006508biological_processproteolysis
C0008234molecular_functioncysteine-type peptidase activity
D0001533cellular_componentcornified envelope
D0002020molecular_functionprotease binding
D0004866molecular_functionendopeptidase inhibitor activity
D0004869molecular_functioncysteine-type endopeptidase inhibitor activity
D0005515molecular_functionprotein binding
D0005615cellular_componentextracellular space
D0005737cellular_componentcytoplasm
D0005829cellular_componentcytosol
D0007155biological_processcell adhesion
D0018149biological_processpeptide cross-linking
D0030216biological_processkeratinocyte differentiation
D0030414molecular_functionpeptidase inhibitor activity
D0045861biological_processnegative regulation of proteolysis
D0098609biological_processcell-cell adhesion
E0001533cellular_componentcornified envelope
E0002020molecular_functionprotease binding
E0004866molecular_functionendopeptidase inhibitor activity
E0004869molecular_functioncysteine-type endopeptidase inhibitor activity
E0005515molecular_functionprotein binding
E0005615cellular_componentextracellular space
E0005737cellular_componentcytoplasm
E0005829cellular_componentcytosol
E0007155biological_processcell adhesion
E0018149biological_processpeptide cross-linking
E0030216biological_processkeratinocyte differentiation
E0030414molecular_functionpeptidase inhibitor activity
E0045861biological_processnegative regulation of proteolysis
E0098609biological_processcell-cell adhesion
F0001533cellular_componentcornified envelope
F0002020molecular_functionprotease binding
F0004866molecular_functionendopeptidase inhibitor activity
F0004869molecular_functioncysteine-type endopeptidase inhibitor activity
F0005515molecular_functionprotein binding
F0005615cellular_componentextracellular space
F0005737cellular_componentcytoplasm
F0005829cellular_componentcytosol
F0007155biological_processcell adhesion
F0018149biological_processpeptide cross-linking
F0030216biological_processkeratinocyte differentiation
F0030414molecular_functionpeptidase inhibitor activity
F0045861biological_processnegative regulation of proteolysis
F0098609biological_processcell-cell adhesion
Functional Information from PROSITE/UniProt
site_idPS00139
Number of Residues12
DetailsTHIOL_PROTEASE_CYS Eukaryotic thiol (cysteine) proteases cysteine active site. QGqCGSCWAfSA
ChainResidueDetails
AGLN19-ALA30

site_idPS00287
Number of Residues14
DetailsCYSTATIN Cysteine proteases inhibitors signature. TQVVAGTNYyIKVR
ChainResidueDetails
DTHR45-ARG58

site_idPS00639
Number of Residues11
DetailsTHIOL_PROTEASE_HIS Eukaryotic thiol (cysteine) proteases histidine active site. MDHGVLVVGYG
ChainResidueDetails
AMET161-GLY171

site_idPS00640
Number of Residues20
DetailsTHIOL_PROTEASE_ASN Eukaryotic thiol (cysteine) proteases asparagine active site. YWLvKNSWgeeWGmgGYVkM
ChainResidueDetails
ATYR182-MET201

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues6
DetailsPropeptide: {"featureId":"PRO_0000026246"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues3
DetailsActive site: {"evidences":[{"source":"PubMed","id":"9468501","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues6
DetailsActive site: {}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues33
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"37990007","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"8HFV","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues3
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"source":"PubMed","id":"12754519","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"16335952","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"19159218","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues12
DetailsMotif: {"description":"Secondary area of contact"}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues3
DetailsSite: {"description":"Reactive site"}
ChainResidueDetails

site_idSWS_FT_FI8
Number of Residues3
DetailsModified residue: {"description":"N-acetylmethionine","evidences":[{"source":"UniProtKB","id":"P01039","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

247947

PDB entries from 2026-01-21

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