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3GT3

Structure of proteinase K with the mad triangle B3C

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 Residues18
DetailsBINDING SITE FOR RESIDUE BRV A 301
ChainResidue
ASER191
AHOH304
AHOH305
AHOH306
AHOH307
AHOH588
AHOH662
AHOH671
AHOH680
AHOH737
APHE192
ATHR206
AASP207
ASER221
ATHR244
ASER247
AHOH302
AHOH303

site_idAC2
Number of Residues10
DetailsBINDING SITE FOR RESIDUE BRV A 308
ChainResidue
AGLU43
AALA44
ASER45
AGLY259
AHOH309
AHOH512
AHOH620
AHOH685
AHOH740
AHOH776

site_idAC3
Number of Residues14
DetailsBINDING SITE FOR RESIDUE BRV A 310
ChainResidue
AGLY134
AASN161
AGLY222
ATHR223
ASER224
AHOH312
AHOH313
AHOH314
AHOH315
AHOH316
AHOH496
AHOH632
AHOH697
AHOH789

site_idAC4
Number of Residues8
DetailsBINDING SITE FOR RESIDUE SO4 A 311
ChainResidue
AASN161
AGLY222
ATHR223
ASER224
AHOH312
AHOH313
AHOH316
AHOH496

site_idAC5
Number of Residues10
DetailsBINDING SITE FOR RESIDUE BRV A 317
ChainResidue
AGLY19
ALYS125
AARG185
ATYR186
AHOH318
AHOH319
AHOH320
AHOH511
AHOH763
AHOH781

site_idAC6
Number of Residues7
DetailsBINDING SITE FOR RESIDUE SO4 A 321
ChainResidue
APRO7
ATRP8
AARG185
AHOH419
AHOH456
AHOH570
AHOH681

Functional Information from PROSITE/UniProt
site_idPS00136
Number of Residues12
DetailsSUBTILASE_ASP Serine proteases, subtilase family, aspartic acid active site. VYVIDTGIeasH
ChainResidueDetails
AVAL35-HIS46

site_idPS00137
Number of Residues11
DetailsSUBTILASE_HIS Serine proteases, subtilase family, histidine active site. HGThCAGtVGS
ChainResidueDetails
AHIS69-SER79

site_idPS00138
Number of Residues11
DetailsSUBTILASE_SER Serine proteases, subtilase family, serine active site. GTSmAtPhVAG
ChainResidueDetails
AGLY222-GLY232

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues272
DetailsDomain: {"description":"Peptidase S8","evidences":[{"source":"PROSITE-ProRule","id":"PRU01240","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues3
DetailsActive site: {"description":"Charge relay system","evidences":[{"source":"PROSITE-ProRule","id":"PRU01240","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues5
DetailsBinding site: {}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 1sca
ChainResidueDetails
ASER224
AASP39
AHIS69

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PDB entries from 2025-12-17

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