Article
p21 with a phenylalanine 28----leucine mutation reacts normally with the GTPase activating protein GAP but nevertheless has transforming properties.
The Journal of biological chemistry - 15 Sept 1991
Reinstein J, Schlichting I, Frech M, Goody R S, Wittinghofer A
Abstract excerpt
The H-ras gene product p21H has been mutated at Phe-28, which makes a hydrophobic interaction with the guanine base of bound GDP/GTP. The mutation Phe-28----Leu drastically increases nucleotide dissociation rates without affecting association rates. This is due to a perturbed binding of base, alpha- and beta-phosphate, and Mg2+, as evidenced from 31P NMR and fluorescence measurements. The region around the...
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