Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 93.36 kDa 
• Atom Count: 6309 
• Modelled Residue Count: 784 
• Deposited Residue Count: 826 
• Unique protein chains: 1

3OY2

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

• DOI: 10.2210/pdb3OY2/pdb

• Classification: VIRAL PROTEIN,TRANSFERASE
• Organism(s): Paramecium bursaria Chlorella virus NY2A
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2010-09-22 Released: 2010-11-17 
• Deposition Author(s): Xiang, Y., Rossmann, M.G.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.31 Å
• R-Value Free: 0.268 
• R-Value Work: 0.233 
• R-Value Observed: 0.235 

Literature

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

• PubMed: 20861263 
• DOI: 10.1128/JVI.01303-10
• Primary Citation of Related Structures:  
  3OY7, 3OY2


• 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.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glycosyltransferase B736L	A, B	413	Paramecium bursaria Chlorella virus NY2A	Mutation(s): 0  Gene Names: B736L, NY2A_B736L
UniProt
Find proteins for A7IXR1 (Paramecium bursaria Chlorella virus NY2A) Explore A7IXR1  Go to UniProtKB:  A7IXR1

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• 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 = 153.615	α = 90
b = 246.941	β = 90
c = 67.17	γ = 90

Software Package:

Software Name	Purpose
Blu-Ice	data collection
SOLVE	phasing
REFMAC	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2010-09-22 
• Released Date: 2010-11-17 
Deposition Author(s): Xiang, Y., Rossmann, M.G.

Revision History  

• Version 1.0: 2010-11-17
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance