Structure of PDB 4r91 Chain A Binding Site BS01

Receptor Information
>4r91 Chain A (length=387) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
GSFVEMVDNLRGKSGQGYYVEMTVGSPPQTLNILVDTGSSNFAVGAAPHP
FLHRYYQRQLSSTYRDLRKGVYVPYTQGKWEGELGTDLVSIPHGPNVTVR
ANIAAITESDKFFINGSNWEGILGLAYAEIARPDDSLEPFFDSLVKQTHV
PNLFSLQLCGAGFPLNQSEVLASVGGSMIIGGIDHSLYTGSLWYTPIRRE
WYYEVIIVRVEINGQDLKMDCKEYNYDKSIVDSGTTNLRLPKKVFEAAVK
SIKAASSTEKFPDGFWLGEQLVCWQAGTTPWNIFPVISLYLMGEVTNQSF
RITILPQQYLRPVEDSQDDCYKFAISQSSTGTVMGAVIMEGFYVVFDRAR
KRIGFAVSACHVHDEFRTAAVEGPFVTLDMEDCGYNI
Ligand information
Ligand ID3KT
InChIInChI=1S/C24H42N4O/c1-28-22(29)24(27-23(28)25,15-14-18-8-3-2-4-9-18)17-19-10-7-13-21(16-19)26-20-11-5-6-12-20/h18-21,26H,2-17H2,1H3,(H2,25,27)/t19-,21+,24+/m0/s1
InChIKeyNOZCXTAZEGFFAQ-XZDHIHRUSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.7.6CN1C(=O)C(NC1=N)(CCC2CCCCC2)CC3CCCC(C3)NC4CCCC4
OpenEye OEToolkits 1.7.6[H]/N=C/1\N[C@](C(=O)N1C)(CCC2CCCCC2)C[C@H]3CCC[C@H](C3)NC4CCCC4
CACTVS 3.385CN1C(=N)N[C@](CCC2CCCCC2)(C[C@H]3CCC[C@H](C3)NC4CCCC4)C1=O
ACDLabs 12.01O=C1N(C(=[N@H])NC1(CC3CCCC(NC2CCCC2)C3)CCC4CCCCC4)C
CACTVS 3.385CN1C(=N)N[C](CCC2CCCCC2)(C[CH]3CCC[CH](C3)NC4CCCC4)C1=O
FormulaC24 H42 N4 O
Name(2E,5R)-5-(2-cyclohexylethyl)-5-{[(1S,3R)-3-(cyclopentylamino)cyclohexyl]methyl}-2-imino-3-methylimidazolidin-4-one
ChEMBLCHEMBL3354250
DrugBank
ZINCZINC000138147399
PDB chain4r91 Chain A Residue 502 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB4r91 Discovery of potent iminoheterocycle BACE1 inhibitors.
Resolution1.58 Å
Binding residue
(original residue number in PDB)		D93 Y132 F169 D289 G291
Binding residue
(residue number reindexed from 1)		D36 Y75 F112 D232 G234
Annotation score1
Binding affinityMOAD: Ki=430nM
PDBbind-CN: -logKd/Ki=6.37,Kd=430nM
BindingDB: Ki=430nM
Enzymatic activity
Catalytic site (original residue number in PDB) D93 S96 N98 A100 Y132 D289 T292
Catalytic site (residue number reindexed from 1) D36 S39 N41 A43 Y75 D232 T235
Enzyme Commision number 3.4.23.46: memapsin 2.
Gene Ontology
Molecular Function
GO:0004190 aspartic-type endopeptidase activity
Biological Process
GO:0006508 proteolysis
Cellular Component
GO:0016020 membrane

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:4r91, PDBe:4r91, PDBj:4r91
PDBsum4r91
PubMed25455483
UniProtP56817|BACE1_HUMAN Beta-secretase 1 (Gene Name=BACE1)

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