Structure of PDB 1u65 Chain A Binding Site BS02

Receptor Information
>1u65 Chain A (length=533) Species: 7787 (Tetronarce californica) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
SELLVNTKSGKVMGTRVPVLSSHISAFLGIPFAEPPVGNMRFRRPEPKKP
WSGVWNASTYPNNCQQYVDEQFPGFSGSEMWNPNREMSEDCLYLNIWVPS
PRPKSTTVMVWIYGGGFYSGSSTLDVYNGKYLAYTEEVVLVSLSYRVGAF
GFLALHGSQEAPGNVGLLDQRMALQWVHDNIQFFGGDPKTVTIFGESAGG
ASVGMHILSPGSRDLFRRAILQSGSPNCPWASVSVAEGRRRAVELGRNLN
CNLNSDEELIHCLREKKPQELIDVEWNVLPFDSIFRFSFVPVIDGEFFPT
SLESMLNSGNFKKTQILLGVNKDEGSFFLLYGAPGFSKDSESKISREDFM
SGVKLSVPHANDLGLDAVTLQYTDWMDDNNGIKNRDGLDDIVGDHNVICP
LMHFVNKYTKFGNGTYLYFFNHRASNLVWPEWMGVIHGYEIEFVFGLPLV
KELNYTAEEEALSRRIMHYWATFAKTGNPNEPHSQESKWPLFTTKEQKFI
DLNTEPMKVHQRLRVQMCVFWNQFLPKLLNATA
Ligand information
Ligand IDCP0
InChIInChI=1S/C33H38N4O6/c1-3-22-23-16-21(43-32(40)36-14-10-20(11-15-36)35-12-6-5-7-13-35)8-9-27(23)34-29-24(22)18-37-28(29)17-26-25(30(37)38)19-42-31(39)33(26,41)4-2/h8-9,16-17,20,41H,3-7,10-15,18-19H2,1-2H3/t33-/m0/s1
InChIKeyUWKQSNNFCGGAFS-XIFFEERXSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.5.0CCc1c2cc(ccc2nc3c1CN4C3=CC5=C(C4=O)COC(=O)C5(CC)O)OC(=O)N6CCC(CC6)N7CCCCC7
CACTVS 3.341CCc1c2CN3C(=O)C4=C(C=C3c2nc5ccc(OC(=O)N6CCC(CC6)N7CCCCC7)cc15)[C](O)(CC)C(=O)OC4
CACTVS 3.341CCc1c2CN3C(=O)C4=C(C=C3c2nc5ccc(OC(=O)N6CCC(CC6)N7CCCCC7)cc15)[C@@](O)(CC)C(=O)OC4
ACDLabs 10.04O=C7OCC=6C(=O)N2C(c1nc5c(c(c1C2)CC)cc(OC(=O)N4CCC(N3CCCCC3)CC4)cc5)=CC=6C7(O)CC
OpenEye OEToolkits 1.5.0CCc1c2cc(ccc2nc3c1CN4C3=CC5=C(C4=O)COC(=O)[C@@]5(CC)O)OC(=O)N6CCC(CC6)N7CCCCC7
FormulaC33 H38 N4 O6
Name(4S)-4,11-DIETHYL-4-HYDROXY-3,14-DIOXO-3,4,12,14-TETRAHYDRO-1H-PYRANO[3',4':6,7]INDOLIZINO[1,2-B]QUINOLIN-9-YL 1,4'-BIPIPERIDINE-1'-CARBOXYLATE;
IRINOTECAN;
CPT-11
ChEMBLCHEMBL481
DrugBankDB00762
ZINCZINC000001612996
PDB chain1u65 Chain A Residue 603 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB1u65 The crystal structure of the complex of the anticancer prodrug 7-ethyl-10-[4-(1-piperidino)-1-piperidino]-carbonyloxycamptothecin (CPT-11) with Torpedo californica acetylcholinesterase provides a molecular explanation for its cholinergic action
Resolution2.61 Å
Binding residue
(original residue number in PDB)		Y70 W84 Y121 W279 L282 F284 D285 S286 F330 F331
Binding residue
(residue number reindexed from 1)		Y67 W81 Y118 W276 L279 F281 D282 S283 F327 F328
Annotation score1
Binding affinityPDBbind-CN: -logKd/Ki=7.58,Ki=26.4nM
BindingDB: Ki=26nM
Enzymatic activity
Catalytic site (original residue number in PDB) G118 G119 G151 S200 A201 A239 F290 F292 E327 H440
Catalytic site (residue number reindexed from 1) G115 G116 G148 S197 A198 A236 F287 F289 E324 H437
Enzyme Commision number 3.1.1.7: acetylcholinesterase.
Gene Ontology
Molecular Function
GO:0003990 acetylcholinesterase activity
GO:0004104 cholinesterase activity
GO:0052689 carboxylic ester hydrolase activity
Biological Process
GO:0001507 acetylcholine catabolic process in synaptic cleft
GO:0006581 acetylcholine catabolic process
GO:0019695 choline metabolic process
Cellular Component
GO:0005615 extracellular space
GO:0005886 plasma membrane
GO:0043083 synaptic cleft
GO:0045202 synapse
GO:0098552 side of membrane

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1u65, PDBe:1u65, PDBj:1u65
PDBsum1u65
PubMed15772291
UniProtP04058|ACES_TETCF Acetylcholinesterase (Gene Name=ache)

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