Conservation of divergent transcription in fungi.

Abstract

The comparison of fully sequenced genomes enables the study of selective constraints that determine genome organisation. We show that, in fungi, adjacent divergently transcribed (<---->) genes are more conserved in orientation than convergent (--><--) or co-oriented (-->-->) gene pairs. Furthermore, the time divergent orientation of two genes is conserved correlates with the degree of their co-expression and with the likelihood of them being functionally related. The functional interactions of the proteins encoded by the conserved divergent gene pairs indicate a potential for protein function prediction in eukaryotes.