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2PKA

REFINED 2 ANGSTROMS X-RAY CRYSTAL STRUCTURE OF PORCINE PANCREATIC KALLIKREIN A, A SPECIFIC TRYPSIN-LIKE SERINE PROTEINASE. CRYSTALLIZATION, STRUCTURE DETERMINATION, CRYSTALLOGRAPHIC REFINEMENT, STRUCTURE AND ITS COMPARISON WITH BOVINE TRYPSIN

Functional Information from GO Data
ChainGOidnamespacecontents
A0004252molecular_functionserine-type endopeptidase activity
A0006508biological_processproteolysis
B0004252molecular_functionserine-type endopeptidase activity
B0006508biological_processproteolysis
X0004252molecular_functionserine-type endopeptidase activity
X0006508biological_processproteolysis
Y0004252molecular_functionserine-type endopeptidase activity
Y0006508biological_processproteolysis
Functional Information from PDB Data
site_idAC1
Number of Residues8
DetailsBINDING SITE FOR RESIDUE BEN B 1
ChainResidue
BASP189
BTHR190
BTHR213
BSER214
BGLY216
BHIS217
BCYS220
BSER226

site_idAC2
Number of Residues9
DetailsBINDING SITE FOR RESIDUE BEN Y 1
ChainResidue
YTHR190
YSER195
YTHR213
YSER214
YGLY216
YHIS217
YCYS220
YSER226
YASP189

Functional Information from PROSITE/UniProt
site_idPS00134
Number of Residues6
DetailsTRYPSIN_HIS Serine proteases, trypsin family, histidine active site. LTAAHC
ChainResidueDetails
ALEU53-CYS58

site_idPS00135
Number of Residues12
DetailsTRYPSIN_SER Serine proteases, trypsin family, serine active site. DTcmGDSGGPLI
ChainResidueDetails
BASP189-ILE200

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues6
DetailsActive site: {"description":"Charge relay system"}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues4
DetailsGlycosylation: {"description":"N-linked (GlcNAc...) asparagine","evidences":[{"evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 1hja
ChainResidueDetails
YSER195
YGLY196

site_idCSA2
Number of Residues2
DetailsAnnotated By Reference To The Literature 1hja
ChainResidueDetails
BSER195
BGLY196

site_idCSA3
Number of Residues2
DetailsAnnotated By Reference To The Literature 1hja
ChainResidueDetails
YSER195
YGLY193

site_idCSA4
Number of Residues2
DetailsAnnotated By Reference To The Literature 1hja
ChainResidueDetails
BSER195
BGLY193

244349

PDB entries from 2025-11-05

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