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1TRN

CRYSTAL STRUCTURE OF HUMAN TRYPSIN 1: UNEXPECTED PHOSPHORYLATION OF TYROSINE 151

Functional Information from GO Data
ChainGOidnamespacecontents
A0004252molecular_functionserine-type endopeptidase activity
A0005576cellular_componentextracellular region
A0005615cellular_componentextracellular space
A0006508biological_processproteolysis
A0007586biological_processdigestion
A0008233molecular_functionpeptidase activity
A0008236molecular_functionserine-type peptidase activity
A0016787molecular_functionhydrolase activity
A0022617biological_processextracellular matrix disassembly
A0031012cellular_componentextracellular matrix
A0046872molecular_functionmetal ion binding
A0072562cellular_componentblood microparticle
B0004252molecular_functionserine-type endopeptidase activity
B0005576cellular_componentextracellular region
B0005615cellular_componentextracellular space
B0006508biological_processproteolysis
B0007586biological_processdigestion
B0008233molecular_functionpeptidase activity
B0008236molecular_functionserine-type peptidase activity
B0016787molecular_functionhydrolase activity
B0022617biological_processextracellular matrix disassembly
B0031012cellular_componentextracellular matrix
B0046872molecular_functionmetal ion binding
B0072562cellular_componentblood microparticle
Functional Information from PDB Data
site_idAC1
Number of Residues7
DetailsBINDING SITE FOR RESIDUE ISP A 301
ChainResidue
AGLY193
AASP194
ASER195
AVAL213
AHIS57
ACYS191
AGLN192

site_idAC2
Number of Residues8
DetailsBINDING SITE FOR RESIDUE ISP B 301
ChainResidue
BHIS57
BCYS191
BGLN192
BGLY193
BASP194
BSER195
BVAL213
BSER214

site_idCAT
Number of Residues6
Details
ChainResidue
ASER195
AHIS57
AASP102
BSER195
BHIS57
BASP102

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

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

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 Residues8
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsSite: {"description":"Required for specificity","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsModified residue: {"description":"Sulfotyrosine","evidences":[{"source":"PubMed","id":"17087724","evidenceCode":"ECO:0000305"},{"source":"PubMed","id":"25010489","evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
AASP102
ASER195
AHIS57

site_idCSA2
Number of Residues3
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
BASP102
BSER195
BHIS57

site_idCSA3
Number of Residues4
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
AASP102
ASER195
AGLY193
AHIS57

site_idCSA4
Number of Residues4
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
BASP102
BSER195
BGLY193
BHIS57

site_idCSA5
Number of Residues4
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
AASP102
ASER195
AHIS57
AGLY196

site_idCSA6
Number of Residues4
DetailsAnnotated By Reference To The Literature 1a0j
ChainResidueDetails
BASP102
BSER195
BHIS57
BGLY196

247536

PDB entries from 2026-01-14

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