Molecular biology: Rewiring of the yeast transcriptional network through the evolution of motif usage

Jan Ihmels, Sven Bergmann, Maryam Gerami-Nejad, Itai Yanai, Mark McClellan, Judith Berman, Naama Barkai

Research output: Contribution to journalArticlepeer-review

Abstract

Recent experiments revealed large-scale differences in the transcription programs of related species, yet little is known about the genetic basis underlying the evolution of gene expression and its contribution to phenotypic diversity. Here we describe a large-scale modulation of the yeast transcription program that is connected to the emergence of the capacity for rapid anaerobic growth. Genes coding for mitochondrial and cytoplasmic ribosomal proteins display a strongly correlated expression pattern in Candida albicans, but this correlation is lost in the fermentative yeast Saccharomyces cerevisiae. We provide evidence that this change in gene expression is connected to the loss of a specific cis-regulatory element from dozens of genes following the apparent whole-genome duplication event. Our results shed new light on the genetic mechanisms underlying the large-scale evolution of transcriptional networks.

Original languageEnglish
Pages (from-to)938-940
Number of pages3
JournalScience
Volume309
Issue number5736
DOIs
StatePublished - 5 Aug 2005
Externally publishedYes

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