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. 2007 Sep;177(1):1–7. doi: 10.1093/genetics/177.1.1

TABLE 1.

A curiosity-driven experiment leads to the discovery of the genes required for NMD in yeast

Growth without histidine
Genotype 30° 37°
Wild type + +
his4-38 suf1wt UPF1wt
his4-38 SUFIfs UPF1wt +
his4-38 SUF1fs upf1Δ + +
his4-38 suf1wt upf1Δ

The phenotypes of allosuppressors that were shown to be mutations in the yeast UPF genes are shown.