Convergent evolution of domain architectures (is rare)

J. Gough

Research output: Contribution to journalArticle (Academic Journal)peer-review

117 Citations (Scopus)

Abstract

MOTIVATION: In this paper, we shall examine the evolution of domain architectures across 62 genomes of known phylogeny including all kingdoms of life. We look in particular at the possibility of convergent evolution, with a view to determining the extent to which the architectures observed in the genomes are due to functional necessity or evolutionary descent. We used domains of known structure, because from this and other information we know their evolutionary relationships. We use a range of methods including phylogenetic grouping, sequence similarity/alignment, mutation rates and comparative genomics to approach this difficult problem from several angles. RESULTS: Although we do not claim an exhaustive analysis, we conclude that between 0.4 and 4% of sequences are involved in convergent evolution of domain architectures, and expect the actual number to be close to the lower bound. We also made two incidental observations, albeit on a small sample: the events leading to convergent evolution appear to be random with no functional or structural preferences, and changes in the number of tandem repeat domains occur more readily than changes which alter the domain composition. CONCLUSION: The principal conclusion is that the observed domain architectures of the sequences in the genomes are driven by evolutionary descent rather than functional necessity. CONTACT: gough@supfam.org.
Translated title of the contributionConvergent evolution of domain architectures (is rare)
Original languageEnglish
Article number1464-1471
Pages (from-to)1464 - 1471
Number of pages8
JournalBioinformatics
Volume21 (8)
DOIs
Publication statusPublished - 15 Apr 2005

Bibliographical note

Other identifier: 1040006

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