6AZ2

Crystal structure of Asf1-Fab 12E complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.477 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.193 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Locking the Elbow: Improved Antibody Fab Fragments as Chaperones for Structure Determination.

Bailey, L.J.Sheehy, K.M.Dominik, P.K.Liang, W.G.Rui, H.Clark, M.Jaskolowski, M.Kim, Y.Deneka, D.Tang, W.J.Kossiakoff, A.A.

(2018) J. Mol. Biol. 430: 337-347

  • DOI: 10.1016/j.jmb.2017.12.012
  • Primary Citation of Related Structures:  5CJO, 6AYZ

  • PubMed Abstract: 
  • Antibody Fab fragments have been exploited with significant success to facilitate the structure determination of challenging macromolecules as crystallization chaperones and as molecular fiducial marks for single particle cryo-electron microscopy app ...

    Antibody Fab fragments have been exploited with significant success to facilitate the structure determination of challenging macromolecules as crystallization chaperones and as molecular fiducial marks for single particle cryo-electron microscopy approaches. However, the inherent flexibility of the "elbow" regions, which link the constant and variable domains of the Fab, can introduce disorder and thus diminish their effectiveness. We have developed a phage display engineering strategy to generate synthetic Fab variants that significantly reduces elbow flexibility, while maintaining their high affinity and stability. This strategy was validated using previously recalcitrant Fab-antigen complexes where introduction of an engineered elbow region enhanced crystallization and diffraction resolution. Furthermore, incorporation of the mutations appears to be generally portable to other synthetic antibodies and may serve as a universal strategy to enhance the success rates of Fabs as structure determination chaperones.


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, University of Chicago, Chicago, IL 60637, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Fab Heavy Chain
A, C
229N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Histone chaperone ASF1
B, D
154Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Gene Names: ASF1 (CIA1)
Find proteins for P32447 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P32447
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
Fab Light Chain
E, F
215N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.477 Å
  • R-Value Free: 0.228 
  • R-Value Work: 0.193 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 99.666α = 90.00
b = 109.743β = 90.00
c = 122.170γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
HKL-3000data collection
MOLREPphasing
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-01-10
    Type: Initial release
  • Version 1.1: 2018-02-14
    Type: Database references