5UBR

CRYSTAL STRUCTURE OF PI3K ALPHA IN COMPLEX WITH A 7-(3-(PIPERAZIN-1-YL)PHENYL)PYRROLO[2,1-F][1,2,4] TRIAZIN-4-AMINE DERIVIATINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.201 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Discovery of 7-(3-(piperazin-1-yl)phenyl)pyrrolo[2,1-f][1,2,4]triazin-4-amine derivatives as highly potent and selective PI3K delta inhibitors.

Qin, L.Y.Ruan, Z.Cherney, R.J.Dhar, T.G.Neels, J.Weigelt, C.A.Sack, J.S.Srivastava, A.S.Cornelius, L.A.Tino, J.A.Stefanski, K.Gu, X.Xie, J.Susulic, V.Yang, X.Yarde-Chinn, M.Skala, S.Bosnius, R.Goldstein, C.Davies, P.Ruepp, S.Salter-Cid, L.Bhide, R.S.Poss, M.A.

(2017) Bioorg Med Chem Lett 27: 855-861

  • DOI: https://doi.org/10.1016/j.bmcl.2017.01.016
  • Primary Citation of Related Structures:  
    5UBR, 5UBT

  • PubMed Abstract: 

    As demonstrated in preclinical animal models, the disruption of PI3Kδ expression or its activity leads to a decrease in inflammatory and immune responses. Therefore, inhibition of PI3Kδ may provide an alternative treatment for autoimmune diseases, such as RA, SLE, and respiratory ailments. Herein, we disclose the identification of 7-(3-(piperazin-1-yl)phenyl)pyrrolo[2,1-f][1,2,4]triazin-4-amine derivatives as highly potent, selective and orally bioavailable PI3Kδ inhibitors. The lead compound demonstrated efficacy in an in vivo mouse KLH model.


  • Organizational Affiliation

    Bristol-Myers Squibb, Rt. 206 & Province Line Road, Princeton, NJ 08540, USA. Electronic address: lan-ying.qin@bms.com.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform944Homo sapiensMutation(s): 0 
Gene Names: PIK3CA
EC: 2.7.1.153
UniProt & NIH Common Fund Data Resources
Find proteins for P42336 (Homo sapiens)
Explore P42336 
Go to UniProtKB:  P42336
GTEx:  ENSG00000121879 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP42336
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
85S
Query on 85S

Download Ideal Coordinates CCD File 
B [auth A]1-[4-(3-{4-amino-5-[1-(oxan-4-yl)-1H-pyrazol-5-yl]pyrrolo[2,1-f][1,2,4]triazin-7-yl}phenyl)piperazin-1-yl]ethan-1-one
C26 H30 N8 O2
BYWWTRGEAVDHNY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.40 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.200 
  • R-Value Observed: 0.201 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.645α = 90
b = 134.805β = 90
c = 142.342γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
SCALAdata scaling
BUSTERrefinement

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

Deposition Data

  • Released Date: 2017-02-08 
  • Deposition Author(s): Sack, J.S.

Revision History  (Full details and data files)

  • Version 1.0: 2017-02-08
    Type: Initial release
  • Version 1.1: 2017-02-22
    Changes: Database references