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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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A mutant of melanoma growth stimulating activity does not activate neutrophils but blocks erythrocyte invasion by malaria.

Alanine scanning mutagenesis of the charged amino acids of melanoma growth stimulating activity (MGSA) was used to identify specific residues that are involved in binding to the human erythrocyte Duffy antigen/chemokine receptor (DARC) and to the type B interleukin-8 receptor (IL-8RB) on neutrophils. Receptor binding and biological studies with the alanine scan mutants of MGSA demonstrate that MGSA binds to DARC and the IL-8RB through distinct binding regions. One of the MGSA mutants, E6A, binds to human erythrocytes and is able to inhibit malaria invasion as efficiently as wild type MGSA but has a severely reduced ability to bind to or signal through the IL-8RB. Mutant chemokines like E6A could prove to be useful therapeutically for the design of receptor blocking drugs that inhibit erythrocyte invasion by Plasmodium vivax malaria.[1]

References

  1. A mutant of melanoma growth stimulating activity does not activate neutrophils but blocks erythrocyte invasion by malaria. Hesselgesser, J., Chitnis, C.E., Miller, L.H., Yansura, D.G., Simmons, L.C., Fairbrother, W.J., Kotts, C., Wirth, C., Gillece-Castro, B.L., Horuk, R. J. Biol. Chem. (1995) [Pubmed]
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