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1DUI

Subtilisin BPN' from Bacillus amyloliquefaciens, crystal growth mutant

Functional Information from GO Data
ChainGOidnamespacecontents
A0004252molecular_functionserine-type endopeptidase activity
A0006508biological_processproteolysis
A0008236molecular_functionserine-type peptidase activity
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE NA A 297
ChainResidue
AGLY169
ATYR171
AVAL174
AGLU195
AASP197
AHOH345

site_idAC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE DFP A 288
ChainResidue
AASN155
AGLY219
ATHR220
ASER221
AHIS64
ALEU126
AALA152

Functional Information from PROSITE/UniProt
site_idPS00136
Number of Residues12
DetailsSUBTILASE_ASP Serine proteases, subtilase family, aspartic acid active site. VAVIDSGIdssH
ChainResidueDetails
AVAL28-HIS39

site_idPS00137
Number of Residues11
DetailsSUBTILASE_HIS Serine proteases, subtilase family, histidine active site. HGThVAGtVLA
ChainResidueDetails
AHIS64-ALA74

site_idPS00138
Number of Residues11
DetailsSUBTILASE_SER Serine proteases, subtilase family, serine active site. GTSmAsPhVAG
ChainResidueDetails
AGLY219-GLY229

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues3
DetailsActive site: {"description":"Charge relay system","evidences":[{"source":"PROSITE-ProRule","id":"PRU01240","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"5249818","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues5
DetailsBinding site: {}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 1sca
ChainResidueDetails
ASER221
AHIS64
AASP32

site_idMCSA1
Number of Residues4
DetailsM-CSA 723
ChainResidueDetails
AASP32electrostatic interaction, electrostatic stabiliser
AHIS64proton acceptor, proton donor
AASN155electrostatic interaction, electrostatic stabiliser
ASER221nucleofuge, nucleophile, proton acceptor, proton donor

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PDB entries from 2025-08-27

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