5ENK

Compound 18


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.11 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.233 

wwPDB Validation 3D Report Full Report


This is version 1.1 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:  

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-secretase 1
A
455Homo sapiensMutation(s): 0 
Gene Names: BACE1 (BACE, KIAA1149)
EC: 3.4.23.46
Find proteins for P56817 (Homo sapiens)
Go to Gene View: BACE1
Go to UniProtKB:  P56817
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IOD
Query on IOD

Download SDF File 
Download CCD File 
A
IODIDE ION
I
XMBWDFGMSWQBCA-UHFFFAOYSA-M
 Ligand Interaction
5QV
Query on 5QV

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Download CCD File 
A
(4~{S},6~{S})-4-[2,4-bis(fluoranyl)-5-pyrimidin-5-yl-phenyl]-6-(3,5-dimethyl-1,2-oxazol-4-yl)-4-methyl-5,6-dihydro-1,3-thiazin-2-amine
C20 H19 F2 N5 O S
UWUREBMKVJWTPP-PXNSSMCTSA-N
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
5QVIC50: 8 nM (100) BINDINGDB
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.11 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.233 
  • Space Group: P 61 2 2
Unit Cell:
Length (Å)Angle (°)
a = 101.924α = 90.00
b = 101.924β = 90.00
c = 171.025γ = 120.00
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
AutoPROCdata scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2015-11-09 
  • Released Date: 2016-07-06 
  • Deposition Author(s): Lewis, H.A.

Revision History 

  • Version 1.0: 2016-07-06
    Type: Initial release
  • Version 1.1: 2016-10-05
    Type: Database references