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9CT1

Complex between the porcine trypsin and M271 a Kunitz-STI from Solanum tuberosum

Functional Information from GO Data
ChainGOidnamespacecontents
A0004252molecular_functionserine-type endopeptidase activity
A0005576cellular_componentextracellular region
A0006508biological_processproteolysis
B0004866molecular_functionendopeptidase inhibitor activity
B0005773cellular_componentvacuole
C0004252molecular_functionserine-type endopeptidase activity
C0005576cellular_componentextracellular region
C0006508biological_processproteolysis
D0004866molecular_functionendopeptidase inhibitor activity
D0005773cellular_componentvacuole
Functional Information from PROSITE/UniProt
site_idPS00134
Number of Residues6
DetailsTRYPSIN_HIS Serine proteases, trypsin family, histidine active site. VSAAHC
ChainResidueDetails
AVAL36-CYS41

site_idPS00135
Number of Residues12
DetailsTRYPSIN_SER Serine proteases, trypsin family, serine active site. DScqGDSGGPVV
ChainResidueDetails
AASP171-VAL182

site_idPS00144
Number of Residues9
DetailsASN_GLN_ASE_1 Asparaginase / glutaminase active site signature 1. LlETGGTIG
ChainResidueDetails
BLEU113-GLY121

site_idPS00283
Number of Residues17
DetailsSOYBEAN_KUNITZ Soybean trypsin inhibitor (Kunitz) protease inhibitors family signature. VlDTNGKkLnPNssYrI
ChainResidueDetails
BVAL8-ILE24

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues440
DetailsDomain: {"description":"Peptidase S1","evidences":[{"source":"PROSITE-ProRule","id":"PRU00274","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues6
DetailsActive site: {"description":"Charge relay system"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues8
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsSite: {"description":"Required for specificity","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsSite: {"description":"Reactive bond for trypsin"}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues2
DetailsSite: {"description":"Reactive bond for chymotrypsin","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues2
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

253795

PDB entries from 2026-05-20

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