2BS7

Crystal structure of F17b-G in complex with chitobiose


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Impact of Natural Variation in Bacterial F17G Adhesins on Crystallization Behaviour.

Buts, L.Wellens, A.Van Molle, I.Wyns, L.Loris, R.Lahmann, M.Oscarson, S.De Greve, H.Bouckaert, J.

(2005) Acta Crystallogr.,Sect.D 61: 1149

  • DOI: 10.1107/S0907444905017038
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Since the introduction of structural genomics, the protein has been recognized as the most important variable in crystallization. Recent strategies to modify a protein to improve crystal quality have included rationally engineered point mutations, tr ...

    Since the introduction of structural genomics, the protein has been recognized as the most important variable in crystallization. Recent strategies to modify a protein to improve crystal quality have included rationally engineered point mutations, truncations, deletions and fusions. Five naturally occurring variants, differing in 1-18 amino acids, of the 177-residue lectin domain of the F17G fimbrial adhesin were expressed and purified in identical ways. For four out of the five variants crystals were obtained, mostly in non-isomorphous space groups, with diffraction limits ranging between 2.4 and 1.1 A resolution. A comparative analysis of the crystal-packing contacts revealed that the variable amino acids are often involved in lattice contacts and a single amino-acid substitution can suffice to radically change crystal packing. A statistical approach proved reliable to estimate the compatibilities of the variant sequences with the observed crystal forms. In conclusion, natural variation, universally present within prokaryotic species, is a valuable genetic resource that can be favourably employed to enhance the crystallization success rate with considerably less effort than other strategies.


    Organizational Affiliation

    Laboratorium voor Ultrastructuur, Vlaams Interuniversitair Instituut voor Biotechnologie and Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
F17BG LECTIN
1
176Escherichia coliMutation(s): 0 
Gene Names: f17bG
Find proteins for Q47200 (Escherichia coli)
Go to UniProtKB:  Q47200
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CBS
Query on CBS

Download SDF File 
Download CCD File 
1
DI(N-ACETYL-D-GLUCOSAMINE)
C16 H28 N2 O11
CDOJPCSDOXYJJF-KSKNGZLJSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.216 
  • Space Group: P 62
Unit Cell:
Length (Å)Angle (°)
a = 86.698α = 90.00
b = 86.698β = 90.00
c = 57.043γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
PHASERphasing
DENZOdata reduction
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-05-24
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance