Barrier-to-autointegration factor soaked in TMAO: 1 of 14 in MSCS set

Experimental Data Snapshot

  • Resolution: 1.65 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.163 

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Ligand Structure Quality Assessment 

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Development of a structure-analysis pipeline using multiple-solvent crystal structures of barrier-to-autointegration factor.

Agarwal, S.Smith, M.De La Rosa, I.Verba, K.A.Swartz, P.Segura-Totten, M.Mattos, C.

(2020) Acta Crystallogr D Struct Biol 76: 1001-1014

  • DOI: https://doi.org/10.1107/S2059798320011341
  • Primary Citation of Related Structures:  
    6UNT, 6URE, 6URJ, 6URK, 6URL, 6URN, 6URR, 6URZ, 6US0, 6US1, 6US7, 6USB, 6USD, 6USI

  • PubMed Abstract: 

    The multiple-solvent crystal structure (MSCS) approach uses high concentrations of organic solvents to characterize the interactions and effects of solvents on proteins. Here, the method has been further developed and an MSCS data-handling pipeline is presented that uses the Detection of Related Solvent Positions (DRoP) program to improve data quality. DRoP is used to selectively model conserved water molecules, so that an advanced stage of structural refinement is reached quickly. This allows the placement of organic molecules more accurately and convergence on high-quality maps and structures. This pipeline was applied to the chromatin-associated protein barrier-to-autointegration factor (BAF), resulting in structural models with better than average statistics. DRoP and Phenix Structure Comparison were used to characterize the data sets and to identify a binding site that overlaps with the interaction site of BAF with emerin. The conserved water-mediated networks identified by DRoP suggested a mechanism by which water molecules are used to drive the binding of DNA. Normalized and differential B-factor analysis is shown to be a valuable tool to characterize the effects of specific solvents on defined regions of BAF. Specific solvents are identified that cause stabilization of functionally important regions of the protein. This work presents tools and a standardized approach for the analysis and comprehension of MSCS data sets.

  • Organizational Affiliation

    Department of Chemistry and Chemical Biology, Northeastern University, Boston, MA 02115, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Barrier-to-autointegration factor
A, B
89Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for O75531 (Homo sapiens)
Explore O75531 
Go to UniProtKB:  O75531
PHAROS:  O75531
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO75531
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.65 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.160 
  • R-Value Observed: 0.163 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.94α = 90
b = 41.94β = 90
c = 213.88γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
MOSFLMdata reduction
Aimlessdata scaling

Structure Validation

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Ligand Structure Quality Assessment 

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Science Foundation (NSF, United States)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2020-10-07
    Type: Initial release
  • Version 1.1: 2020-10-21
    Changes: Database references