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4WTB

BthTX-I, a svPLA2s-like toxin, complexed with zinc ions

Functional Information from GO Data
ChainGOidnamespacecontents
A0004623molecular_functionphospholipase A2 activity
A0005509molecular_functioncalcium ion binding
A0005543molecular_functionphospholipid binding
A0005576cellular_componentextracellular region
A0006644biological_processphospholipid metabolic process
A0008201molecular_functionheparin binding
A0016042biological_processlipid catabolic process
A0035821biological_processmodulation of process of another organism
A0042130biological_processnegative regulation of T cell proliferation
A0042742biological_processdefense response to bacterium
A0047498molecular_functioncalcium-dependent phospholipase A2 activity
A0050482biological_processarachidonate secretion
A0090729molecular_functiontoxin activity
B0004623molecular_functionphospholipase A2 activity
B0005509molecular_functioncalcium ion binding
B0005543molecular_functionphospholipid binding
B0005576cellular_componentextracellular region
B0006644biological_processphospholipid metabolic process
B0008201molecular_functionheparin binding
B0016042biological_processlipid catabolic process
B0035821biological_processmodulation of process of another organism
B0042130biological_processnegative regulation of T cell proliferation
B0042742biological_processdefense response to bacterium
B0047498molecular_functioncalcium-dependent phospholipase A2 activity
B0050482biological_processarachidonate secretion
B0090729molecular_functiontoxin activity
Functional Information from PDB Data
site_idAC1
Number of Residues4
Detailsbinding site for residue ZN A 201
ChainResidue
AHIS47
AHOH347
AHOH349
AHOH350

site_idAC2
Number of Residues4
Detailsbinding site for residue ZN A 202
ChainResidue
AHIS110
AHOH304
AHOH344
AHOH345

site_idAC3
Number of Residues8
Detailsbinding site for residue SO4 A 203
ChainResidue
ATYR107
AHOH304
AHOH315
BTYR109
BHIS110
BLEU111
BLYS112
ALYS37

site_idAC4
Number of Residues4
Detailsbinding site for residue CL A 204
ChainResidue
AARG33
ALYS112
BPRO17
BALA18

site_idAC5
Number of Residues4
Detailsbinding site for residue ZN B 201
ChainResidue
AHOH302
AHOH308
BHIS110
BHOH341

site_idAC6
Number of Residues2
Detailsbinding site for residue SO4 B 202
ChainResidue
BLYS19
BARG108

site_idAC7
Number of Residues2
Detailsbinding site for residue CL B 203
ChainResidue
BGLY32
BLYS48

Functional Information from PROSITE/UniProt
site_idPS00118
Number of Residues8
DetailsPA2_HIS Phospholipase A2 histidine active site. CCYvHKcC
ChainResidueDetails
ACYS43-CYS50

site_idPS00119
Number of Residues11
DetailsPA2_ASP Phospholipase A2 aspartic acid active site. LCECDKAVaIC
ChainResidueDetails
ALEU85-CYS95

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues4
DetailsSITE: Important residue of the cationic membrane-docking site (MDoS) => ECO:0000250|UniProtKB:I6L8L6
ChainResidueDetails
ALYS105
AARG108
BLYS105
BARG108

site_idSWS_FT_FI2
Number of Residues4
DetailsSITE: Hydrophobic membrane-disruption site (MDiS) => ECO:0000250|UniProtKB:I6L8L6
ChainResidueDetails
ALEU111
APHE114
BLEU111
BPHE114

site_idSWS_FT_FI3
Number of Residues4
DetailsSITE: Cationic membrane-docking site (MDoS) => ECO:0000250|UniProtKB:I6L8L6
ChainResidueDetails
ALYS112
ALEU117
BLYS112
BLEU117

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PDB entries from 2025-06-25

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