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3AFG

Crystal structure of ProN-Tk-SP from Thermococcus kodakaraensis

Functional Information from GO Data
ChainGOidnamespacecontents
A0004252molecular_functionserine-type endopeptidase activity
A0006508biological_processproteolysis
A0008236molecular_functionserine-type peptidase activity
B0004252molecular_functionserine-type endopeptidase activity
B0006508biological_processproteolysis
B0008236molecular_functionserine-type peptidase activity
Functional Information from PDB Data
site_idAC1
Number of Residues7
DetailsBINDING SITE FOR RESIDUE CA A 540
ChainResidue
ALYS4
AASP460
ALEU461
AASP462
ATHR478
AGLU484
AHOH542

site_idAC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE CA A 541
ChainResidue
AASP474
ATYR475
AHOH598
AHOH618
AHOH725
APRO397
AILE400

site_idAC3
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA B 540
ChainResidue
BASP460
BLEU461
BASP462
BTHR478
BGLU484
BHOH638

site_idAC4
Number of Residues6
DetailsBINDING SITE FOR RESIDUE CA B 541
ChainResidue
BPRO397
BILE400
BASP474
BTYR475
BHOH622
BHOH642

Functional Information from PROSITE/UniProt
site_idPS00136
Number of Residues12
DetailsSUBTILASE_ASP Serine proteases, subtilase family, aspartic acid active site. IGIIDTGIdasH
ChainResidueDetails
AILE143-HIS154

site_idPS00137
Number of Residues11
DetailsSUBTILASE_HIS Serine proteases, subtilase family, histidine active site. HGThVASiAAG
ChainResidueDetails
AHIS180-GLY190

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues6
DetailsActive site: {"description":"Charge relay system","evidences":[{"source":"PROSITE-ProRule","id":"PRU01240","evidenceCode":"ECO:0000255"},{"source":"PubMed","id":"20595040","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues18
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"20595040","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsSite: {"description":"Important for catalytic activity","evidences":[{"source":"PubMed","id":"20100702","evidenceCode":"ECO:0000303"}]}
ChainResidueDetails

249697

PDB entries from 2026-02-25

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