Increased sequence conservation of domain repeats in prokaryotic proteins
2010
Reshef, Dan | Itzhaki, Zohar | Schueler-Furman, Ora
Protein domain repeats within a protein sequence have been observed throughout all domains of life. Our analysis shows a significantly higher degree of sequence identity between repeated domains in prokaryotes compared to eukaryotes. We discuss this difference in the light of aggregation prevention, contribution to functional divergence and binding-related functions. We then address the possible underlying features that create and conserve domain repeats. Our findings provide a starting point for the identification of the fundamental principles that underlie this basic difference between eukaryotic and prokaryotic protein evolution.
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