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1L4D

CRYSTAL STRUCTURE OF MICROPLASMINOGEN-STREPTOKINASE ALPHA DOMAIN COMPLEX

Functional Information from GO Data
ChainGOidnamespacecontents
A0004252molecular_functionserine-type endopeptidase activity
A0006508biological_processproteolysis
B0005576cellular_componentextracellular region
B0031639biological_processplasminogen activation
Functional Information from PDB Data
site_idAC1
Number of Residues3
DetailsBINDING SITE FOR RESIDUE SO4 A 215
ChainResidue
AARG644
AGLN721
ASER722

site_idAC2
Number of Residues8
DetailsBINDING SITE FOR RESIDUE SO4 A 216
ChainResidue
BARG45
BHOH162
AHOH170
APRO768
AASN769
ALYS770
BTHR29
BASN30

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 Residues3
DetailsACT_SITE: Charge relay system
ChainResidueDetails
AHIS603
AASP646
AALA741

site_idSWS_FT_FI2
Number of Residues1
DetailsSITE: Cleavage; by plasminogen activator
ChainResidueDetails
AARG561

site_idSWS_FT_FI3
Number of Residues1
DetailsMOD_RES: Phosphoserine => ECO:0000269|PubMed:9201958
ChainResidueDetails
ASER578

site_idSWS_FT_FI4
Number of Residues1
DetailsMOD_RES: Phosphoserine => ECO:0007744|PubMed:24275569
ChainResidueDetails
ASER669

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 1qrz
ChainResidueDetails
AHIS603
AASP646

site_idCSA2
Number of Residues2
DetailsAnnotated By Reference To The Literature 1qrz
ChainResidueDetails
AALA741
AGLY742

site_idCSA3
Number of Residues2
DetailsAnnotated By Reference To The Literature 1qrz
ChainResidueDetails
AALA741
AGLY739

site_idCSA4
Number of Residues4
DetailsAnnotated By Reference To The Literature 1qrz
ChainResidueDetails
AHIS603
AALA741
AASP646
AGLY742

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

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

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PDB entries from 2024-06-26

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