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3RXC

Crystal structure of Trypsin complexed with 2-aminopyridine

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
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA A 1
ChainResidue
AHOH16
AGLU70
AASN72
AVAL75
AGLU80
AHOH325

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE GOL A 2
ChainResidue
ASER84
AHOH253
AHOH488
AGLN65
APHE82
AILE83

site_idAC3
Number of Residues8
DetailsBINDING SITE FOR RESIDUE GOL A 4
ChainResidue
ACYS127
AALA128
AILE160
AGLN206
ALYS226
ACYS228
AHOH345
AHOH476

site_idAC4
Number of Residues5
DetailsBINDING SITE FOR RESIDUE GOL A 5
ChainResidue
AGLU80
AGLN81
APHE82
AHOH263
AHOH414

site_idAC5
Number of Residues10
DetailsBINDING SITE FOR RESIDUE GOL A 6
ChainResidue
ADMS7
ATYR40
AHIS41
AILE73
AASN74
ASER88
AILE89
AVAL90
AHOH317
AHOH423

site_idAC6
Number of Residues9
DetailsBINDING SITE FOR RESIDUE DMS A 7
ChainResidue
AGOL6
AHOH16
AARG67
AILE73
AASN74
APHE82
AVAL90
AHIS91
ATYR94

site_idAC7
Number of Residues6
DetailsBINDING SITE FOR RESIDUE DMS A 8
ChainResidue
ATYR23
ACYS25
ATHR29
ALEU135
AGLN173
AHOH304

site_idAC8
Number of Residues7
DetailsBINDING SITE FOR RESIDUE 2AP A 9
ChainResidue
AASP189
ASER190
AGLY212
AGLY214
AGLY222
AHOH258
AHOH545

Functional Information from PROSITE/UniProt
site_idPS00134
Number of Residues6
DetailsTRYPSIN_HIS Serine proteases, trypsin family, histidine active site. VSAAHC
ChainResidueDetails
AVAL54-CYS59

site_idPS00135
Number of Residues12
DetailsTRYPSIN_SER Serine proteases, trypsin family, serine active site. DScqGDSGGPVV
ChainResidueDetails
AASP189-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

246704

PDB entries from 2025-12-24

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