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Nakashima N, et al. Saccharomyces cerevisiae putative G protein, Gtr1p, which forms complexes with itself and a novel protein designated as Gtr2p, negatively regulates the Ran/Gsp1p G protein cycle through Gtr2p. Genetics 152: 853-867, 1999. PubMed: 10388807
A single nucleotide substitution in the gtr1-11 gene causes an amino acid substitution in Gtr1p, changing serine to leucine