
The alternatively spliced intron in MTR2 is not well conserved. (A) Splicing pattern is shown for each of the species analyzed, along with the species phylogeny as in Figure 1A. (B) The K. lactis MTR2 ortholog does not contain an intron. (C) The C. glabrata MTR2 ortholog does not contain an intron. (D) Splicing of MTR2 in S. cerevisiae is inefficient and uses multiple 5′ and 3′ splice sites, as previously reported.










