5PYC

PanDDA analysis group deposition -- Crystal Structure of SP100 after initial refinement with no ligand modelled (structure 72)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.87 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 

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: https://doi.org/10.1038/ncomms15123
  • Primary Citation of Related Structures:  
    5PB7, 5PB8, 5PB9, 5PBA, 5PBB, 5PBC, 5PBD, 5PBE, 5PBF, 5PBG, 5PBH, 5PBI, 5PBJ, 5PBK, 5PBL, 5PBM, 5PBN, 5PBO, 5PBP, 5PBQ, 5PBR, 5PBS, 5PBT, 5PBU, 5PBV, 5PBW, 5PBX, 5PBY, 5PBZ, 5PC0, 5PC1, 5PC2, 5PC3, 5PC4, 5PC5, 5PC6, 5PC7, 5PC8, 5PC9, 5PCA, 5PCB, 5PCC, 5PCD, 5PCE, 5PCF, 5PCG, 5PCH, 5PCI, 5PCJ, 5PCK

  • 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 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

    Structural Genomics Consortium, Nuffield Department of Medicine, University of Oxford, Roosevelt Drive, Oxford OX3 7DQ, UK.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Nuclear autoantigen Sp-100
A, B
180Homo sapiensMutation(s): 0 
Gene Names: SP100
UniProt & NIH Common Fund Data Resources
Find proteins for P23497 (Homo sapiens)
Go to UniProtKB:  P23497
PHAROS:  P23497
GTEx:  ENSG00000067066 
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.87 Å
  • R-Value Free: 0.208 
  • R-Value Work: 0.168 
  • R-Value Observed: 0.170 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 127.69α = 90
b = 45.43β = 102.25
c = 83.44γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
Aimlessdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction
REFMACphasing

Structure Validation

View Full Validation Report



Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2017-03-22
    Type: Initial release
  • Version 1.1: 2017-10-04
    Changes: Data collection, Database references, Structure summary
  • Version 1.2: 2024-03-06
    Changes: Data collection, Database references, Derived calculations