Evolution of protein kinase substrate recognition at the active site

Bradley, David and Beltrao, Pedro and Turk, Benjamin E. (2019) Evolution of protein kinase substrate recognition at the active site. PLOS Biology, 17 (6). e3000341. ISSN 1545-7885

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Abstract

Protein kinases catalyse the phosphorylation of target proteins, controlling most cellular processes. The specificity of serine/threonine kinases is partly determined by interactions with a few residues near the phospho-acceptor residue, forming the so-called kinase-substrate motif. Kinases have been extensively duplicated throughout evolution, but little is known about when in time new target motifs have arisen. Here, we show that sequence variation occurring early in the evolution of kinases is dominated by changes in specificity-determining residues. We then analysed kinase specificity models, based on known target sites, observing that specificity has remained mostly unchanged for recent kinase duplications. Finally, analysis of phosphorylation data from a taxonomically broad set of 48 eukaryotic species indicates that most phosphorylation motifs are broadly distributed in eukaryotes but are not present in prokaryotes. Overall, our results suggest that the set of eukaryotes kinase motifs present today was acquired around the time of the eukaryotic last common ancestor and that early expansions of the protein kinase fold rapidly explored the space of possible target motifs.

Item Type: Article
Subjects: Lib Research Guardians > Medical Science
Depositing User: Unnamed user with email support@lib.researchguardians.com
Date Deposited: 16 Jan 2023 11:33
Last Modified: 01 Jul 2024 03:42
URI: http://eprints.classicrepository.com/id/eprint/10

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