Crystal structure of human PI3Ka (p110a subunit) with MMV085400 bound to the active site determined at 2.9 angstroms resolution

Experimental Data Snapshot

  • Resolution: 2.91 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report

Ligand Structure Quality Assessment 

This is version 1.1 of the entry. See complete history


Discovery of 2,6-disubstituted pyrazines as potent PI4K inhibitors with antimalarial activity

Krake, S.H.Martinez, P.D.G.Poggi, M.L.Ferreira, M.S.Aguiar, A.C.C.Souza, G.E.Wenlock, M.Jones, B.Steinbrecher, T.Day, T.McPhail, J.Burke, J.Yeo, T.Mok, S.Uhlemann, A.C.Fidock, D.A.Chen, P.Grodsky, N.Deng, Y.L.Guido, R.V.C.Campbell, S.F.Willis, P.A.Dias, L.C.

To be published.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform968Homo sapiensMutation(s): 0 
Gene Names: PIK3CA
EC: (PDB Primary Data), (PDB Primary Data), (PDB Primary Data)
UniProt & NIH Common Fund Data Resources
Find proteins for P42336 (Homo sapiens)
Explore P42336 
Go to UniProtKB:  P42336
PHAROS:  P42336
GTEx:  ENSG00000121879 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP42336
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ZHY (Subject of Investigation/LOI)
Query on ZHY

Download Ideal Coordinates CCD File 
B [auth A]4-[6-(3,4,5-trimethoxyanilino)pyrazin-2-yl]benzamide
C20 H20 N4 O4
Experimental Data & Validation

Experimental Data

  • Resolution: 2.91 Å
  • R-Value Free: 0.242 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 58.849α = 90
b = 134.794β = 90
c = 141.95γ = 90
Software Package:
Software NamePurpose
XDSdata reduction
Aimlessdata scaling
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report

Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Other privateBrazilRD-12-0103

Revision History  (Full details and data files)

  • Version 1.0: 2022-05-04
    Type: Initial release
  • Version 1.1: 2023-10-18
    Changes: Data collection, Refinement description