4R5Y

The complex structure of Braf V600E kinase domain with a novel Braf inhibitor

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.306 
  • R-Value Work: 0.225 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history. 

Literature

BGB-283, a Novel RAF Kinase and EGFR Inhibitor, Displays Potent Antitumor Activity in BRAF-Mutated Colorectal Cancers.

Tang, Z., Yuan, X., Du, R., Cheung, S.H., Zhang, G., Wei, J., Zhao, Y., Feng, Y., Peng, H., Zhang, Y., Du, Y., Hu, X., Gong, W., Liu, Y., Gao, Y., Liu, Y., Hao, R., Li, S., Wang, S., Ji, J., Zhang, L., Li, S., Sutton, D., Wei, M., Zhou, C., Wang, L., Luo, L.

(2015) Mol.Cancer Ther. 14: 2187-2197

  • DOI: 10.1158/1535-7163.MCT-15-0262

  • PubMed Abstract: 

    • Oncogenic BRAF, which drives cell transformation and proliferation, has been detected in approximately 50% of human malignant melanomas and 5% to 15% of colorectal cancers. Despite the remarkable clinical activities achieved by vemurafenib and dabraf ...

    Oncogenic BRAF, which drives cell transformation and proliferation, has been detected in approximately 50% of human malignant melanomas and 5% to 15% of colorectal cancers. Despite the remarkable clinical activities achieved by vemurafenib and dabrafenib in treating BRAF(V600E) metastatic melanoma, their clinical efficacy in BRAF(V600E) colorectal cancer is far less impressive. Prior studies suggested that feedback activation of EGFR and MAPK signaling upon BRAF inhibition might contribute to the relative unresponsiveness of colorectal cancer to the first-generation BRAF inhibitors. Here, we report characterization of a dual RAF kinase/EGFR inhibitor, BGB-283, which is currently under clinical investigation. In vitro, BGB-283 potently inhibits BRAF(V600E)-activated ERK phosphorylation and cell proliferation. It demonstrates selective cytotoxicity and preferentially inhibits proliferation of cancer cells harboring BRAF(V600E) and EGFR mutation/amplification. In BRAF(V600E) colorectal cancer cell lines, BGB-283 effectively inhibits the reactivation of EGFR and EGFR-mediated cell proliferation. In vivo, BGB-283 treatment leads to dose-dependent tumor growth inhibition accompanied by partial and complete tumor regressions in both cell line-derived and primary human colorectal tumor xenografts bearing BRAF(V600E) mutation. These findings support BGB-283 as a potent antitumor drug candidate with clinical potential for treating colorectal cancer harboring BRAF(V600E) mutation.

    Organizational Affiliation: 

    Department of In Vivo Pharmacology, BeiGene (Beijing) Co., Ltd., Beijing, P.R. China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Serine/threonine-protein kinase B-raf
A, B
292Homo sapiensMutation(s): 17 
Gene Names: BRAF (BRAF1, RAFB1)
EC: 2.7.11.1
Find proteins for P15056 (Homo sapiens)
Go to Gene View: BRAF
Go to UniProtKB:  P15056
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
3K3
Query on 3K3
Download SDF File 
Download CCD File 
A, B
5-({(1R,1aS,6bR)-1-[5-(trifluoromethyl)-1H-benzimidazol-2-yl]-1a,6b-dihydro-1H-cyclopropa[b][1]benzofuran-5-yl}oxy)-3,4-dihydro-1,8-naphthyridin-2(1H)-one
C25 H17 F3 N4 O3
NGFFVZQXSRKHBM-FKBYEOEOSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.5 Å
  • R-Value Free: 0.306 
  • R-Value Work: 0.225 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 49.395α = 90.00
b = 101.601β = 90.00
c = 109.786γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data collection
MOLREPphasing
SCALEPACKdata scaling
DENZOdata reduction
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2016-02-24
    Type: Initial release
  • Version 1.1: 2017-11-22
    Type: Refinement description