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ras-p21 protein binds to the son-of-sevenless (SOS) guanine nucleotide-exchange promoter that allows it to exchange GDP for GTP. Previously, we performed molecular dynamics calculations on oncogenic (Val 12-) and wild-type ras-p21 bound to SOS. By superimposing the average structures of these two complexes, we identified four domains (residues 631–641, 676–691, 718–729, and 994–1004) in SOS that...
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