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2ID8

Crystal structure of Proteinase K

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 Residues7
DetailsBINDING SITE FOR RESIDUE CA A 401
ChainResidue
APRO175
AVAL177
AASP200
AHOH708
AHOH713
AHOH725
AHOH732

site_idAC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE NO3 A 501
ChainResidue
ALYS94
AASP97
AASP98
AHOH737
AHOH945
ATYR60
ATYR61

site_idAC3
Number of Residues5
DetailsBINDING SITE FOR RESIDUE NO3 A 502
ChainResidue
AALA1
AALA2
AASN120
ATYR277
AHOH864

site_idAC4
Number of Residues4
DetailsBINDING SITE FOR RESIDUE NO3 A 503
ChainResidue
AARG64
AARG167
AASN168
AGLY214

site_idAC5
Number of Residues2
DetailsBINDING SITE FOR RESIDUE CL A 601
ChainResidue
AVAL56
ALYS57

site_idAC6
Number of Residues11
DetailsBINDING SITE FOR RESIDUE 2DB A 701
ChainResidue
AHIS69
ALEU133
AGLY134
AGLY160
AASN161
ATHR223
ASER224
AHOH743
AHOH779
AHOH818
AHOH889

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 Residues3
DetailsACT_SITE: Charge relay system => ECO:0000255|PROSITE-ProRule:PRU01240
ChainResidueDetails
AASP39
AHIS69
ASER224

site_idSWS_FT_FI2
Number of Residues5
DetailsBINDING:
ChainResidueDetails
ATHR16
APRO175
AVAL177
AASP200
AASP260

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

237423

PDB entries from 2025-06-11

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