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1HPG

A glutamic acid specific serine protease utilizes a novel histidine triad in substrate binding

Functional Information from GO Data
ChainGOidnamespacecontents
A0004252molecular_functionserine-type endopeptidase activity
A0006508biological_processproteolysis
A0008233molecular_functionpeptidase activity
A0008236molecular_functionserine-type peptidase activity
A0016787molecular_functionhydrolase activity
Functional Information from PDB Data
site_idAC1
Number of Residues18
DetailsBINDING SITE FOR CHAIN B OF TETRAPEPTIDE LIGAND
ChainResidue
AHIS57
AASP194
ASER195
AHIS213
ASER214
AGLY215
ASER216
ASER217
AHOH469
BHOH427
AALA164
AVAL167
ATYR171
AARG182
ASER192
AALA192
AGLY192
AGLY193

Functional Information from PROSITE/UniProt
site_idPS00134
Number of Residues6
DetailsTRYPSIN_HIS Serine proteases, trypsin family, histidine active site. VTAGHC
ChainResidueDetails
AVAL53-CYS58

site_idPS00135
Number of Residues12
DetailsTRYPSIN_SER Serine proteases, trypsin family, serine active site. CSagGDSGGAHF
ChainResidueDetails
ACYS191-PHE200

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues3
DetailsACT_SITE: Charge relay system => ECO:0000250
ChainResidueDetails
AHIS57
AASP102
ASER195

Catalytic Information from CSA
site_idCSA1
Number of Residues5
DetailsAnnotated By Reference To The Literature 1ssx
ChainResidueDetails
AASP102
ASER195
AGLY193
AHIS57
ASER214

site_idCSA2
Number of Residues4
DetailsAnnotated By Reference To The Literature 1ssx
ChainResidueDetails
AASP102
ASER195
AGLY193
AHIS57

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PDB entries from 2025-06-18

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