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Structure of a murine leukemia virus receptor-binding glycoprotein at 2.0 angstrom resolution.

An essential step in retrovirus infection is the binding of the virus to its receptor on a target cell. The structure of the receptor-binding domain of the envelope glycoprotein from Friend murine leukemia virus was determined to 2.0 angstrom resolution by x-ray crystallography. The core of the domain is an antiparallel beta sandwich, with two interstrand loops forming a helical subdomain atop the sandwich. The residues in the helical region, but not in the beta sandwich, are highly variable among mammalian C-type retroviruses with distinct tropisms, indicating that the helical subdomain determines the receptor specificity of the virus.[1]

References

  1. Structure of a murine leukemia virus receptor-binding glycoprotein at 2.0 angstrom resolution. Fass, D., Davey, R.A., Hamson, C.A., Kim, P.S., Cunningham, J.M., Berger, J.M. Science (1997) [Pubmed]
 
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