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4AOQ

Cationic trypsin in complex with mutated Spinacia oleracea trypsin inhibitor III (SOTI-III) (F14A)

Functional Information from GO Data
ChainGOidnamespacecontents
A0004175molecular_functionendopeptidase activity
A0004252molecular_functionserine-type endopeptidase activity
A0005515molecular_functionprotein binding
A0005576cellular_componentextracellular region
A0005615cellular_componentextracellular space
A0006508biological_processproteolysis
A0007586biological_processdigestion
A0008233molecular_functionpeptidase activity
A0008236molecular_functionserine-type peptidase activity
A0016787molecular_functionhydrolase activity
A0046872molecular_functionmetal ion binding
A0097180cellular_componentserine protease inhibitor complex
A0097655molecular_functionserpin family protein binding
B0004175molecular_functionendopeptidase activity
B0004252molecular_functionserine-type endopeptidase activity
B0005515molecular_functionprotein binding
B0005576cellular_componentextracellular region
B0005615cellular_componentextracellular space
B0006508biological_processproteolysis
B0007586biological_processdigestion
B0008233molecular_functionpeptidase activity
B0008236molecular_functionserine-type peptidase activity
B0016787molecular_functionhydrolase activity
B0046872molecular_functionmetal ion binding
B0097180cellular_componentserine protease inhibitor complex
B0097655molecular_functionserpin family protein binding
C0004175molecular_functionendopeptidase activity
C0004252molecular_functionserine-type endopeptidase activity
C0005515molecular_functionprotein binding
C0005576cellular_componentextracellular region
C0005615cellular_componentextracellular space
C0006508biological_processproteolysis
C0007586biological_processdigestion
C0008233molecular_functionpeptidase activity
C0008236molecular_functionserine-type peptidase activity
C0016787molecular_functionhydrolase activity
C0046872molecular_functionmetal ion binding
C0097180cellular_componentserine protease inhibitor complex
C0097655molecular_functionserpin family protein binding
D0004867molecular_functionserine-type endopeptidase inhibitor activity
D0030414molecular_functionpeptidase inhibitor activity
E0004867molecular_functionserine-type endopeptidase inhibitor activity
E0030414molecular_functionpeptidase inhibitor activity
F0004867molecular_functionserine-type endopeptidase inhibitor activity
F0030414molecular_functionpeptidase inhibitor activity
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE CA C 1247
ChainResidue
CGLU75
CASN77
CVAL80
CGLU85

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA B 1247
ChainResidue
BHOH2068
AHOH2176
BGLU75
BASN77
BVAL80
BGLU85

site_idAC3
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA A 1247
ChainResidue
AGLU75
AASN77
AVAL80
AGLU85
AHOH2064
AHOH2065

site_idAC4
Number of Residues10
DetailsBINDING SITE FOR RESIDUE 1PE B 1248
ChainResidue
BASN102
BTHR103
BLEU104
BGLN178
BHOH2168
BHOH2201
EGLY8
EHIS28
EILE30
EVAL35

Functional Information from PROSITE/UniProt
site_idPS00134
Number of Residues6
DetailsTRYPSIN_HIS Serine proteases, trypsin family, histidine active site. VSAAHC
ChainResidueDetails
AVAL59-CYS64

site_idPS00135
Number of Residues12
DetailsTRYPSIN_SER Serine proteases, trypsin family, serine active site. DScqGDSGGPVV
ChainResidueDetails
AASP194-VAL205

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues660
DetailsDomain: {"description":"Peptidase S1","evidences":[{"source":"PROSITE-ProRule","id":"PRU00274","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues9
DetailsActive site: {"description":"Charge relay system"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues21
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues3
DetailsSite: {"description":"Reactive bond for trypsin","evidences":[{"source":"UniProtKB","id":"P84779","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

239803

PDB entries from 2025-08-06

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