Role of the plant heterotrimeric G-proteins in the signal pathways regulation

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Abstract

Animal and fungal heterotrimeric G-proteins are among the well-known regulators of signaling pathways. Plant studies have shown that G-proteins may also be involved in the regulation of many processes. G-proteins are involved in hormonal regulation, control of cell proliferation, response to abiotic factors, control of biotic interactions and many others. It turned out that with a smaller variety of subunits, G-proteins of plants can have a greater variety of mechanisms for activating and transmitting signals. However, for most processes in plants the mechanisms of operation of heterotrimeric G-proteins remain poorly understood. This review is devoted to the analysis of modern ideas about the structure and functioning of heterotrimeric plant G proteins.

About the authors

Andrey D. Bovin

All-Russia Research Institute for Agricultural Microbiology

Email: andy-piter2007@mail.ru
ORCID iD: 0000-0003-4061-435X

PhD Student, Laboratory of Molecular and Cellular Biology

Russian Federation, 3, Podbelsky highway, Pushkin, Saint-Petersburg, 196608

Elena A. Dolgikh

All-Russia Research Institute for Agricultural Microbiology

Author for correspondence.
Email: dol2helen@yahoo.com
ORCID iD: 0000-0002-5375-0943
SPIN-code: 4453-2060
Scopus Author ID: 6603496335
ResearcherId: G-6363-2017

Doctor of Science, Group Leader, Laboratory of Molecular and Cellular Biology

Russian Federation, 3, Podbelsky highway, Pushkin, Saint-Petersburg, 196608

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2. Fig. 1. Comparison of the ways of activation of heterotrimeric G-proteins in animals (а) and plants (b, c); b — RGS-dependent pathway of activation, c — RGS-independent pathway of activation (according to [24], as amended)

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3. Fig. 2. Scheme of the organization of subunits of heterotrimeric G-proteins and plant RGS. Given the designation of the corresponding genes and accession numbers in the databases for some model plants. A scale bar corresponding to 100 amino acid residues is shown. TM — transmembrane domain; CaaX — prenylation domain (according to [24], as amended)

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4. Fig. 3. Integration of heterotrimeric G-proteins, MAP-kinases with the RACK1 scaffold protein and Rac1 small GTPase in signaling pathways

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Copyright (c) 2019 Bovin A.D., Dolgikh E.A.

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