Abstract
Relatively few genes in the yeast Saccharornyces cerevisiae are known to contain intervening sequences. As a group, yeast ribosomal protein genes exhibit a higher prevalence of introns when compared to non-ribosomal protein genes. In an effort to quantify this bias we have estimated the prevalence of intron sequences among non-ribosomal protein genes by assessing the number of prp2-sensitive mRNAs in an in vitro translation assay. These results, combined with an updated survey of the GenBank DNA database, support an estimate of 2.5% for intron-containing non-ribosomal protein genes. Furthermore, our observations reveal an intriguing distinction between the distributions of ribosomal protein and non-ribosomal protein intron lengths, suggestive of distinct, gene class-specific evolutionary pressures.
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Rodriguez-Medina, J.R., Rymond, B.C. Prevalence and distribution of introns in non-ribosomal protein genes of yeast. Molec. Gen. Genet. 243, 532–539 (1994). https://doi.org/10.1007/BF00284201
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DOI: https://doi.org/10.1007/BF00284201