5ENM

Compound 10


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.256 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.0 of the entry. See complete history


Literature

Targeting the BACE1 Active Site Flap Leads to a Potent Inhibitor That Elicits Robust Brain A beta Reduction in Rodents.

Wu, Y.J.Guernon, J.Yang, F.Snyder, L.Shi, J.Mcclure, A.Rajamani, R.Park, H.Ng, A.Lewis, H.Chang, C.Camac, D.Toyn, J.H.Ahlijanian, M.K.Albright, C.F.Macor, J.E.Thompson, L.A.

(2016) ACS Med Chem Lett 7: 271-276

  • DOI: 10.1021/acsmedchemlett.5b00432
  • Primary Citation of Related Structures:  
    5ENK, 5ENM

  • PubMed Abstract: 
  • By targeting the flap backbone of the BACE1 active site, we discovered 6-dimethylisoxazole-substituted biaryl aminothiazine 18 with 34-fold improved BACE1 inhibitory activity over the lead compound 1. The cocrystal structure of 18 bound to the active site indicated two hydrogen-bond interactions between the dimethylisoxazole and threonine 72 and glutamine 73 of the flap ...

    By targeting the flap backbone of the BACE1 active site, we discovered 6-dimethylisoxazole-substituted biaryl aminothiazine 18 with 34-fold improved BACE1 inhibitory activity over the lead compound 1. The cocrystal structure of 18 bound to the active site indicated two hydrogen-bond interactions between the dimethylisoxazole and threonine 72 and glutamine 73 of the flap. Incorporation of the dimethylisoxazole substitution onto the related aminothiazine carboxamide series led to pyrazine-carboxamide 26 as a very potent BACE1 inhibitor (IC50 < 1 nM). This compound demonstrated robust brain Aβ reduction in rat dose-response studies. Thus, compound 26 may be useful in testing the amyloid hypothesis of Alzheimer's disease.


    Organizational Affiliation

    Research and Development, Bristol-Myers Squibb Company , 5 Research Parkway, Wallingford, Connecticut 06492-7660, United States.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Beta-secretase 1A455Homo sapiensMutation(s): 0 
Gene Names: BACE1BACEKIAA1149
EC: 3.4.23.46
UniProt & NIH Common Fund Data Resources
Find proteins for P56817 (Homo sapiens)
Explore P56817 
Go to UniProtKB:  P56817
PHAROS:  P56817
GTEx:  ENSG00000186318 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP56817
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
5QU
Query on 5QU

Download Ideal Coordinates CCD File 
D [auth A](2~{R},4~{S},6~{S})-4-[2,4-bis(fluoranyl)-5-pyrimidin-5-yl-phenyl]-6-(3,5-dimethyl-1,2-oxazol-4-yl)-1,3-thiazinan-2-amine
C19 H19 F2 N5 O S
QXXCXVMLHLDXDN-JENIJYKNSA-N
 Ligand Interaction
IOD
Query on IOD

Download Ideal Coordinates CCD File 
C [auth A]IODIDE ION
I
XMBWDFGMSWQBCA-UHFFFAOYSA-M
 Ligand Interaction
GOL
Query on GOL

Download Ideal Coordinates CCD File 
B [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
5QU Binding MOAD:  5ENM IC50: 70 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.98 Å
  • R-Value Free: 0.284 
  • R-Value Work: 0.255 
  • R-Value Observed: 0.256 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 102.234α = 90
b = 102.234β = 90
c = 170.579γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
AutoPROCdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 



Entry History 

Deposition Data

  • Deposited Date: 2015-11-09 
  • Released Date: 2016-10-05 
  • Deposition Author(s): Lewis, H.A.

Revision History  (Full details and data files)

  • Version 1.0: 2016-10-05
    Type: Initial release