Crystal structure of a putative glycosyltransferase from Paramecium bursaria Chlorella virus NY2A

Experimental Data Snapshot

  • Resolution: 2.31 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.235 

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Crystal structure of a virus-encoded putative glycosyltransferase

Xiang, Y.Baxa, U.Zhang, Y.Steven, A.C.Lewis, G.L.Van Etten, J.L.Rossmann, M.G.

(2010) J Virol 84: 12265-12273

  • DOI: https://doi.org/10.1128/JVI.01303-10
  • Primary Citation of Related Structures:  
    3OY2, 3OY7

  • PubMed Abstract: 

    The chloroviruses (family Phycodnaviridae), unlike most viruses, encode some, if not most, of the enzymes involved in the glycosylation of their structural proteins. Annotation of the gene product B736L from chlorovirus NY-2A suggests that it is a glycosyltransferase. The structure of the recombinantly expressed B736L protein was determined by X-ray crystallography to 2.3-Å resolution, and the protein was shown to have two nucleotide-binding folds like other glycosyltransferase type B enzymes. This is the second structure of a chlorovirus-encoded glycosyltransferase and the first structure of a chlorovirus type B enzyme to be determined. B736L is a retaining enzyme and belongs to glycosyltransferase family 4. The donor substrate was identified as GDP-mannose by isothermal titration calorimetry and was shown to bind into the cleft between the two domains in the protein. The active form of the enzyme is probably a dimer in which the active centers are separated by about 40 Å.

  • Organizational Affiliation

    Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907-2054, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Glycosyltransferase B736L
A, B
413Paramecium bursaria Chlorella virus NY2AMutation(s): 0 
Gene Names: B736LNY2A_B736L
Find proteins for A7IXR1 (Paramecium bursaria Chlorella virus NY2A)
Explore A7IXR1 
Go to UniProtKB:  A7IXR1
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA7IXR1
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.31 Å
  • R-Value Free: 0.268 
  • R-Value Work: 0.233 
  • R-Value Observed: 0.235 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 153.615α = 90
b = 246.941β = 90
c = 67.17γ = 90
Software Package:
Software NamePurpose
Blu-Icedata collection
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2010-11-17
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2024-02-21
    Changes: Data collection, Database references, Refinement description