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1BML

COMPLEX OF THE CATALYTIC DOMAIN OF HUMAN PLASMIN AND STREPTOKINASE

Functional Information from GO Data
ChainGOidnamespacecontents
A0004252molecular_functionserine-type endopeptidase activity
A0006508biological_processproteolysis
B0004252molecular_functionserine-type endopeptidase activity
B0006508biological_processproteolysis
C0005576cellular_componentextracellular region
C0031639biological_processplasminogen activation
D0005576cellular_componentextracellular region
D0031639biological_processplasminogen activation
Functional Information from PROSITE/UniProt
site_idPS00134
Number of Residues6
DetailsTRYPSIN_HIS Serine proteases, trypsin family, histidine active site. LTAAHC
ChainResidueDetails
ALEU599-CYS604

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues454
DetailsDomain: {"description":"Peptidase S1","evidences":[{"source":"PROSITE-ProRule","id":"PRU00274","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues6
DetailsActive site: {"description":"Charge relay system"}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues2
DetailsSite: {"description":"Cleavage; by plasminogen activator"}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"9201958","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"PubMed","id":"24275569","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues4
DetailsAnnotated By Reference To The Literature 1qrz
ChainResidueDetails
AHIS603
AALA741
AGLY739
AASP646

site_idCSA2
Number of Residues4
DetailsAnnotated By Reference To The Literature 1qrz
ChainResidueDetails
BHIS603
BALA741
BGLY739
BASP646

site_idCSA3
Number of Residues4
DetailsAnnotated By Reference To The Literature 1qrz
ChainResidueDetails
AHIS603
AALA741
AASP646
AGLY742

site_idCSA4
Number of Residues4
DetailsAnnotated By Reference To The Literature 1qrz
ChainResidueDetails
BHIS603
BALA741
BASP646
BGLY742

site_idCSA5
Number of Residues7
DetailsAnnotated By Reference To The Literature 1qrz
ChainResidueDetails
ACYS737
AHIS603
AALA741
AASP740
AASP646
AGLY739
AGLN738

site_idCSA6
Number of Residues7
DetailsAnnotated By Reference To The Literature 1qrz
ChainResidueDetails
BCYS737
BHIS603
BALA741
BASP740
BASP646
BGLY739
BGLN738

site_idMCSA1
Number of Residues4
DetailsM-CSA 425
ChainResidueDetails
AHIS603proton shuttle (general acid/base)
AASP646electrostatic stabiliser, modifies pKa
AALA741covalent catalysis, proton shuttle (general acid/base)
AGLY742electrostatic stabiliser

site_idMCSA2
Number of Residues4
DetailsM-CSA 425
ChainResidueDetails
BHIS603proton shuttle (general acid/base)
BASP646electrostatic stabiliser, modifies pKa
BALA741covalent catalysis, proton shuttle (general acid/base)
BGLY742electrostatic stabiliser

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PDB entries from 2025-12-17

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