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2AGI

The leupeptin-trypsin covalent complex at 1.14 A resolution

Functional Information from GO Data
ChainGOidnamespacecontents
X0004175molecular_functionendopeptidase activity
X0004252molecular_functionserine-type endopeptidase activity
X0005515molecular_functionprotein binding
X0005576cellular_componentextracellular region
X0005615cellular_componentextracellular space
X0006508biological_processproteolysis
X0007586biological_processdigestion
X0008233molecular_functionpeptidase activity
X0008236molecular_functionserine-type peptidase activity
X0016787molecular_functionhydrolase activity
X0046872molecular_functionmetal ion binding
X0097180cellular_componentserine protease inhibitor complex
X0097655molecular_functionserpin family protein binding
Functional Information from PDB Data
site_idAC1
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 X 701
ChainResidue
AHOH50
XGLN192
XGLY193
XHOH934
XHOH1041

site_idAC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE SO4 X 801
ChainResidue
XHOH931
XHOH1117
XHOH1122
XLYS169
XPRO173
XGLY174
XGLN240

site_idAC3
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA X 501
ChainResidue
XGLU70
XASN72
XVAL75
XGLU80
XHOH815
XHOH822

site_idAC4
Number of Residues22
DetailsBINDING SITE FOR CHAIN A OF LEUPEPTIN
ChainResidue
AHOH50
AHOH112
AHOH212
AHOH256
AHOH257
AHOH355
XHIS57
XLEU99
XASP189
XSER190
XCYS191
XGLN192
XGLY193
XASP194
XSER195
XSER214
XTRP215
XGLY216
XGLY219
XGLY226
XSO4701
XHOH975

Functional Information from PROSITE/UniProt
site_idPS00134
Number of Residues6
DetailsTRYPSIN_HIS Serine proteases, trypsin family, histidine active site. VSAAHC
ChainResidueDetails
XVAL53-CYS58

site_idPS00135
Number of Residues12
DetailsTRYPSIN_SER Serine proteases, trypsin family, serine active site. DScqGDSGGPVV
ChainResidueDetails
XASP189-VAL200

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues220
DetailsDomain: {"description":"Peptidase S1","evidences":[{"source":"PROSITE-ProRule","id":"PRU00274","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues3
DetailsActive site: {"description":"Charge relay system"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues7
DetailsBinding site: {}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
XASP102
XHIS57

site_idCSA2
Number of Residues2
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
XSER195
XGLY196

site_idCSA3
Number of Residues2
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
XSER195
XGLY193

site_idCSA4
Number of Residues3
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
XASP102
XSER195
XHIS57

site_idCSA5
Number of Residues4
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
XASP102
XSER195
XGLY193
XHIS57

site_idCSA6
Number of Residues4
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
XASP102
XSER195
XHIS57
XGLY196

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PDB entries from 2025-07-30

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