6DMG

A multiconformer ligand model of EK6 bound to ERK2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Re-refinement Note

This entry reflects an alternative modeling of the original data in: 

  • 4FV3 - determined by Kang, Y.N., Stuckey, J.A., Xie, X.  

Literature

qFit-ligand Reveals Widespread Conformational Heterogeneity of Drug-Like Molecules in X-Ray Electron Density Maps.

van Zundert, G.C.P.Hudson, B.M.de Oliveira, S.H.P.Keedy, D.A.Fonseca, R.Heliou, A.Suresh, P.Borrelli, K.Day, T.Fraser, J.S.van den Bedem, H.

(2018) J. Med. Chem. 61: 11183-11198

  • DOI: 10.1021/acs.jmedchem.8b01292
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Proteins and ligands sample a conformational ensemble that governs molecular recognition, activity, and dissociation. In structure-based drug design, access to this conformational ensemble is critical to understand the balance between entropy and ent ...

    Proteins and ligands sample a conformational ensemble that governs molecular recognition, activity, and dissociation. In structure-based drug design, access to this conformational ensemble is critical to understand the balance between entropy and enthalpy in lead optimization. However, ligand conformational heterogeneity is currently severely underreported in crystal structures in the Protein Data Bank, owing in part to a lack of automated and unbiased procedures to model an ensemble of protein-ligand states into X-ray data. Here, we designed a computational method, qFit-ligand, to automatically resolve conformationally averaged ligand heterogeneity in crystal structures, and applied it to a large set of protein receptor-ligand complexes. In an analysis of the cancer related BRD4 domain, we found that up to 29% of protein crystal structures bound with drug-like molecules present evidence of unmodeled, averaged, relatively isoenergetic conformations in ligand-receptor interactions. In many retrospective cases, these alternate conformations were adventitiously exploited to guide compound design, resulting in improved potency or selectivity. Combining qFit-ligand with high-throughput screening or multitemperature crystallography could therefore augment the structure-based drug design toolbox.


    Organizational Affiliation

    SLAC National Accelerator Laboratory , Stanford University , Menlo Park , California 94025 United States.,Schrödinger , New York , New York 10036 , United States.,Department of Molecular and Cellular Physiology , Stanford University , Stanford , California 94305 , United States.,LIX, Ecole Polytechnique, CNRS, Inria , Université Paris-Saclay , 91128 Palaiseau , France.,Department of Bioengineering and Therapeutic Sciences , UCSF , San Francisco , California 94158 , United States.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mitogen-activated protein kinase 1
A
347Homo sapiensMutation(s): 0 
Gene Names: MAPK1 (ERK2, PRKM1, PRKM2)
EC: 2.7.11.24
Find proteins for P28482 (Homo sapiens)
Go to Gene View: MAPK1
Go to UniProtKB:  P28482
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
EDO
Query on EDO

Download SDF File 
Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
EK6
Query on EK6

Download SDF File 
Download CCD File 
A
ethyl N-{2-chloro-4-[5-(5-{[(1S)-1-(3-chloro-4-fluorophenyl)-2-hydroxyethyl]carbamoyl}-1H-pyrrol-3-yl)-1H-pyrazol-4-yl]benzyl}glycinate
C27 H26 Cl2 F N5 O4
VVRLXUNPTACSJC-XMMPIXPASA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CME
Query on CME
A
L-PEPTIDE LINKINGC5 H11 N O3 S2CYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.186 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 48.780α = 90.00
b = 70.700β = 110.11
c = 60.860γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
SCALEPACKdata scaling
PHENIXphasing
PHENIXrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-12-19
    Type: Initial release
  • Version 1.1: 2019-04-24
    Type: Data collection, Database references