Loading
PDBj
MenuPDBj@FacebookPDBj@TwitterPDBj@YouTubewwPDB FoundationwwPDB
RCSB PDBPDBeBMRBAdv. SearchSearch help

1PQA

Trypsin with PMSF at atomic resolution

Functional Information from GO Data
ChainGOidnamespacecontents
A0004252molecular_functionserine-type endopeptidase activity
A0005576cellular_componentextracellular region
A0006508biological_processproteolysis
A0008236molecular_functionserine-type peptidase activity
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE SO4 A 401
ChainResidue
AGLN63
ASER64
AGLY113
AHOH456
AHOH462
AHOH580

site_idAC2
Number of Residues7
DetailsBINDING SITE FOR RESIDUE SO4 A 402
ChainResidue
ASER184
ATYR238
AHOH478
AHOH663
AARG88
APRO158
AVAL183

Functional Information from PROSITE/UniProt
site_idPS00134
Number of Residues6
DetailsTRYPSIN_HIS Serine proteases, trypsin family, histidine active site. LTAAHC
ChainResidueDetails
ALEU52-CYS57

site_idPS00135
Number of Residues12
DetailsTRYPSIN_SER Serine proteases, trypsin family, serine active site. DScqGDSGGPIV
ChainResidueDetails
AASP189-VAL200

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues3
DetailsACT_SITE: Charge relay system
ChainResidueDetails
AHIS56
AASP99
ASEB195

site_idSWS_FT_FI2
Number of Residues1
DetailsSITE: Required for specificity
ChainResidueDetails
AASP189

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
AHIS56
AASP99

site_idCSA2
Number of Residues3
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
AGLY193
AHIS56
AASP99

site_idCSA3
Number of Residues2
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
ASEB195
AGLY193

site_idCSA4
Number of Residues2
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
ASEB195
AGLY196

site_idCSA5
Number of Residues3
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
AHIS56
AASP99
AGLY196

site_idCSA6
Number of Residues4
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
ASER211
AGLY193
AHIS56
AASP99

site_idMCSA1
Number of Residues6
DetailsM-CSA 173
ChainResidueDetails
AHIS56hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor
AASP99activator, electrostatic stabiliser, hydrogen bond acceptor
AGLN192electrostatic stabiliser, hydrogen bond donor, transition state stabiliser
AGLY193electrostatic stabiliser, hydrogen bond donor, transition state stabiliser
AASP194electrostatic stabiliser, hydrogen bond donor, transition state stabiliser
ASEB195electrostatic stabiliser, transition state stabiliser

222624

PDB entries from 2024-07-17

PDB statisticsPDBj update infoContact PDBjnumon