5PQ2

PanDDA analysis group deposition -- Crystal Structure of BRD1 after initial refinement with no ligand modelled (structure 39)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

A multi-crystal method for extracting obscured crystallographic states from conventionally uninterpretable electron density.

Pearce, N.M.Krojer, T.Bradley, A.R.Collins, P.Nowak, R.P.Talon, R.Marsden, B.D.Kelm, S.Shi, J.Deane, C.M.von Delft, F.

(2017) Nat Commun 8: 15123-15123

  • DOI: 10.1038/ncomms15123
  • Primary Citation of Related Structures:  
    5PBB, 5PBA, 5PBD, 5PBC, 5PBF, 5PBE, 5PB8, 5PB7, 5PB9, 5PCA

  • PubMed Abstract: 
  • In macromolecular crystallography, the rigorous detection of changed states (for example, ligand binding) is difficult unless signal is strong. Ambiguous ('weak' or 'noisy') density is experimentally common, since molecular states are generally only ...

    In macromolecular crystallography, the rigorous detection of changed states (for example, ligand binding) is difficult unless signal is strong. Ambiguous ('weak' or 'noisy') density is experimentally common, since molecular states are generally only fractionally present in the crystal. Existing methodologies focus on generating maximally accurate maps whereby minor states become discernible; in practice, such map interpretation is disappointingly subjective, time-consuming and methodologically unsound. Here we report the PanDDA method, which automatically reveals clear electron density for the changed state-even from inaccurate maps-by subtracting a proportion of the confounding 'ground state'; changed states are objectively identified from statistical analysis of density distributions. The method is completely general, implying new best practice for all changed-state studies, including the routine collection of multiple ground-state crystals. More generally, these results demonstrate: the incompleteness of atomic models; that single data sets contain insufficient information to model them fully; and that accuracy requires further map-deconvolution approaches.


    Organizational Affiliation

    Department of Biochemistry, University of Johannesburg, Auckland Park 2006, South Africa.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Bromodomain-containing protein 1AB156Homo sapiensMutation(s): 3 
Gene Names: BRD1BRLBRPF2
Find proteins for O95696 (Homo sapiens)
Explore O95696 
Go to UniProtKB:  O95696
NIH Common Fund Data Resources
PHAROS  O95696
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EDO
Query on EDO

Download CCD File 
A, B
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
NA
Query on NA

Download CCD File 
B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.47 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.168α = 90
b = 56.355β = 90
c = 101.72γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
Aimlessdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
REFMACphasing

Structure Validation

View Full Validation Report



Entry History 

Revision History 

  • Version 1.0: 2017-03-29
    Type: Initial release
  • Version 1.1: 2017-09-27
    Changes: Data collection, Database references, Structure summary
  • Version 1.2: 2017-10-04
    Changes: Structure summary