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3CYL

Crystal structure of Piratoxin I (a myotoxic Lys49-PLA2) complexed with alpha-tocopherol

Functional Information from GO Data
ChainGOidnamespacecontents
A0004623molecular_functionphospholipase A2 activity
A0005509molecular_functioncalcium ion binding
A0005543molecular_functionphospholipid binding
A0005576cellular_componentextracellular region
A0006644biological_processphospholipid metabolic process
A0016042biological_processlipid catabolic process
A0035821biological_processmodulation of process of another organism
A0042130biological_processnegative regulation of T cell proliferation
A0050482biological_processarachidonate secretion
A0090729molecular_functiontoxin activity
B0004623molecular_functionphospholipase A2 activity
B0005509molecular_functioncalcium ion binding
B0005543molecular_functionphospholipid binding
B0005576cellular_componentextracellular region
B0006644biological_processphospholipid metabolic process
B0016042biological_processlipid catabolic process
B0035821biological_processmodulation of process of another organism
B0042130biological_processnegative regulation of T cell proliferation
B0050482biological_processarachidonate secretion
B0090729molecular_functiontoxin activity
Functional Information from PDB Data
site_idAC1
Number of Residues5
DetailsBINDING SITE FOR RESIDUE SO4 A 301
ChainResidue
AGLY33
AARG34
ALYS53
AHOH365
AHOH466

site_idAC2
Number of Residues2
DetailsBINDING SITE FOR RESIDUE SO4 A 303
ChainResidue
ALYS115
AARG118

site_idAC3
Number of Residues6
DetailsBINDING SITE FOR RESIDUE SO4 A 305
ChainResidue
AARG107
AHOH315
AHOH325
BLYS36
ATHR81
AILE104

site_idAC4
Number of Residues6
DetailsBINDING SITE FOR RESIDUE SO4 B 308
ChainResidue
BLYS20
BTHR59
BLYS115
BARG118
BSO4309
BHOH525

site_idAC5
Number of Residues6
DetailsBINDING SITE FOR RESIDUE SO4 B 309
ChainResidue
BGLY15
BLYS16
BASN17
BLYS20
BSO4308
BHOH569

site_idAC6
Number of Residues12
DetailsBINDING SITE FOR RESIDUE VIT A 306
ChainResidue
ALEU2
AGLY6
APRO18
ATYR22
AGLY23
AGLY30
AVAL31
AHOH447
AHOH463
BLYS69
BVIT310
BHOH555

site_idAC7
Number of Residues19
DetailsBINDING SITE FOR RESIDUE VIT B 310
ChainResidue
AVAL31
ALEU32
ALYS69
ALEU121
ALYS122
APRO123
AVIT306
BLEU2
BPHE3
BGLY6
BLYS7
BLEU10
BPRO18
BTYR22
BGLY23
BGLY30
BHIS48
BLYS49
BTYR52

site_idAC8
Number of Residues11
DetailsBINDING SITE FOR RESIDUE PE4 B 311
ChainResidue
BPHE3
BLYS7
BLEU10
BGLN11
BTYR75
BTRP77
BHOH411
BHOH542
BHOH543
BHOH544
BHOH562

Functional Information from PROSITE/UniProt
site_idPS00118
Number of Residues8
DetailsPA2_HIS Phospholipase A2 histidine active site. CCYvHKcC
ChainResidueDetails
ACYS44-CYS51

site_idPS00119
Number of Residues11
DetailsPA2_ASP Phospholipase A2 aspartic acid active site. LCECDKAVaIC
ChainResidueDetails
ALEU95-CYS105

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues24
DetailsRegion: {"description":"Important for membrane-damaging activities in eukaryotes and bacteria; heparin-binding","evidences":[{"source":"UniProtKB","id":"P24605","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 1n29
ChainResidueDetails
AHIS48
AGLY30
AASP99

site_idCSA2
Number of Residues3
DetailsAnnotated By Reference To The Literature 1n29
ChainResidueDetails
BHIS48
BGLY30
BASP99

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PDB entries from 2025-12-17

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