Structure of PDB 4ec4 Chain A Binding Site BS02

Receptor Information
>4ec4 Chain A (length=109) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
SDRNFPNSTNLPRNPSMADYEARIFTFGTWIYSVNKEQLARAGFYALGEG
DKVKCFHCGGGLTDWKPSEDPWEQHAKWYPGCKYLLEQKGQEYINNIHLT
HSLEECLVR
Ligand information
Ligand ID0O6
InChIInChI=1S/C64H88N14O8/c1-5-49(65-3)59(81)69-57-45(39-79)27-29-47-31-33-53(77(47)63(57)85)61(83)67-55(43-19-9-7-10-20-43)51-37-75(73-71-51)35-15-13-17-41-23-25-42(26-24-41)18-14-16-36-76-38-52(72-74-76)56(44-21-11-8-12-22-44)68-62(84)54-34-32-48-30-28-46(40-80)58(64(86)78(48)54)70-60(82)50(6-2)66-4/h7-12,19-26,37-38,45-50,53-58,65-66,79-80H,5-6,13-18,27-36,39-40H2,1-4H3,(H,67,83)(H,68,84)(H,69,81)(H,70,82)/t45-,46-,47+,48+,49+,50+,53+,54+,55+,56+,57+,58+/m1/s1
InChIKeyXKEIDWZKJDOBEL-OKDMWEIPSA-N
SMILES
SoftwareSMILES
CACTVS 3.370CC[CH](NC)C(=O)N[CH]1[CH](CO)CC[CH]2CC[CH](N2C1=O)C(=O)N[CH](c3ccccc3)c4cn(CCCCc5ccc(CCCCn6cc(nn6)[CH](NC(=O)[CH]7CC[CH]8CC[CH](CO)[CH](NC(=O)[CH](CC)NC)C(=O)N78)c9ccccc9)cc5)nn4
OpenEye OEToolkits 1.7.6CCC(C(=O)NC1C(CCC2CCC(N2C1=O)C(=O)NC(c3ccccc3)c4cn(nn4)CCCCc5ccc(cc5)CCCCn6cc(nn6)C(c7ccccc7)NC(=O)C8CCC9N8C(=O)C(C(CC9)CO)NC(=O)C(CC)NC)CO)NC
OpenEye OEToolkits 1.7.6CC[C@@H](C(=O)N[C@H]1[C@H](CC[C@H]2CC[C@H](N2C1=O)C(=O)N[C@@H](c3ccccc3)c4cn(nn4)CCCCc5ccc(cc5)CCCCn6cc(nn6)[C@H](c7ccccc7)NC(=O)[C@@H]8CC[C@H]9N8C(=O)[C@H]([C@H](CC9)CO)NC(=O)[C@H](CC)NC)CO)NC
CACTVS 3.370CC[C@H](NC)C(=O)N[C@H]1[C@@H](CO)CC[C@H]2CC[C@H](N2C1=O)C(=O)N[C@@H](c3ccccc3)c4cn(CCCCc5ccc(CCCCn6cc(nn6)[C@@H](NC(=O)[C@@H]7CC[C@@H]8CC[C@H](CO)[C@H](NC(=O)[C@H](CC)NC)C(=O)N78)c9ccccc9)cc5)nn4
ACDLabs 12.01O=C9N1C(CCC1C(=O)NC(c2ccccc2)c3nnn(c3)CCCCc4ccc(cc4)CCCCn5nnc(c5)C(c6ccccc6)NC(=O)C8N7C(=O)C(NC(=O)C(NC)CC)C(CO)CCC7CC8)CCC(CO)C9NC(=O)C(NC)CC
FormulaC64 H88 N14 O8
Name
ChEMBLCHEMBL2220359
DrugBank
ZINC
PDB chain4ec4 Chain A Residue 402 [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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PDB4ec4 Structural insight into inhibitor of apoptosis proteins recognition by a potent divalent smac-mimetic.
Resolution3.3 Å
Binding residue
(original residue number in PDB)		N249 K297 G306 L307 T308 D309 W310 E314 Q319 W323
Binding residue
(residue number reindexed from 1)		N4 K52 G61 L62 T63 D64 W65 E69 Q74 W78
Annotation score1
Binding affinityPDBbind-CN: -logKd/Ki=7.60,IC50=25.4nM
BindingDB: IC50=25.4nM
Enzymatic activity
Enzyme Commision number 2.3.2.27: RING-type E3 ubiquitin transferase.
External links
PDB RCSB:4ec4, PDBe:4ec4, PDBj:4ec4
PDBsum4ec4
PubMed23166698
UniProtP98170|XIAP_HUMAN E3 ubiquitin-protein ligase XIAP (Gene Name=XIAP)

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