rin, a neuron-specific and calmodulin-binding small g-protein, and rit define a novel subfamily of ras proteins.cdnas encoding two novel 25 kda ras-like proteins, rit and rin, were isolated from mouse retina using a degenerate pcr-based cloning strategy. using the expressed sequence tag database, human orthologs were also obtained and sequenced. the protein sequences of rit and rin, which are 64% identical, are more similar to each other than to any known ras protein. their closest homologs in the databases are mucor racemosus ras2 and ras3, to which they show approximately 48% identity. rit and rin both ...19968824319
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