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Evolution of domain combinations in protein kinases and its implications for functional diversity

Deshmukh, Krupa and Anamika, Krishanpal and Srinivasan, Narayanaswamy (2010) Evolution of domain combinations in protein kinases and its implications for functional diversity. In: Progress in Biophysics and Molecular Biology, 102 (1). pp. 1-15.

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Official URL: http://dx.doi.org/10.1016/j.pbiomolbio.2009.12.009


Protein kinases phosphorylating Ser/Thr/Tyr residues in several cellular proteins exert tight control over their biological functions. They constitute the largest protein family in most eukaryotic species. Protein kinases classified based on sequence similarity in their catalytic domains, cluster into subfamilies, which share gross functional properties. Many protein kinases are associated or tethered covalently to domains that serve as adapter or regulatory modules,naiding substrate recruitment, specificity, and also serve as scaffolds. Hence the modular organisation of the protein kinases serves as guidelines to their functional and molecular properties. Analysis of genomic repertoires of protein kinases in eukaryotes have revealed wide spectrum of domain organisation across various subfamilies of kinases. Occurrence of organism-specific novel domain combinations suggests functional diversity achieved by protein kinases in order to regulate variety of biological processes. In addition, domain architecture of protein kinases revealed existence of hybrid protein kinase subfamilies and their emerging roles in the signaling of eukaryotic organisms. In this review we discuss the repertoire of non-kinase domains tethered to multi-domain kinases in the metazoans. Similarities and differences in the domain architectures of protein kinases in these organisms indicate conserved and unique features that are critical to functional specialization. (C) 2009 Elsevier Ltd. All rights reserved.

Item Type: Journal Article
Publication: Progress in Biophysics and Molecular Biology
Publisher: Elsevier Science
Additional Information: Copyright of this article belongs to Elsevier Science.
Keywords: Domain organisation; Protein domains; Protein kinases; Protein phosphorylation; Signal transduction
Department/Centre: Division of Biological Sciences > Molecular Biophysics Unit
Date Deposited: 08 Jun 2010 08:10
Last Modified: 19 Sep 2010 05:59
URI: http://eprints.iisc.ac.in/id/eprint/26995

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