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G-Protein Phosphorylation: Aspects of Binding Specificity and Function in the Plant Kingdom.


ABSTRACT: Plant survival depends on adaptive mechanisms that constantly rely on signal recognition and transduction. The predominant class of signal discriminators is receptor kinases, with a vast member composition in plants. The transduction of signals occurs in part by a simple repertoire of heterotrimeric G proteins, with a core composed of α-, β-, and γ-subunits, together with a 7-transmembrane Regulator G Signaling (RGS) protein. With a small repertoire of G proteins in plants, phosphorylation by receptor kinases is critical in regulating the active state of the G-protein complex. This review describes the in vivo detected phosphosites in plant G proteins and conservation scores, and their in vitro corresponding kinases. Furthermore, recently described outcomes, including novel arrestin-like internalization of RGS and a non-canonical phosphorylation switching mechanism that drives G-protein plasticity, are discussed.

SUBMITTER: Oliveira CC 

PROVIDER: S-EPMC9224535 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature

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G-Protein Phosphorylation: Aspects of Binding Specificity and Function in the Plant Kingdom.

Oliveira Celio Cabral CC   Jones Alan M AM   Fontes Elizabeth Pacheco Batista EPB   Reis Pedro A Braga Dos PABD  

International journal of molecular sciences 20220611 12


Plant survival depends on adaptive mechanisms that constantly rely on signal recognition and transduction. The predominant class of signal discriminators is receptor kinases, with a vast member composition in plants. The transduction of signals occurs in part by a simple repertoire of heterotrimeric G proteins, with a core composed of α-, β-, and γ-subunits, together with a 7-transmembrane Regulator G Signaling (RGS) protein. With a small repertoire of G proteins in plants, phosphorylation by re  ...[more]

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