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Updated: Oct 15, 2025

Identification of Post-translational Modifications of Plant Protein Complexes

Identification of Post-translational Modifications of Plant Protein Complexes

Published on: February 22, 2014

LARP6 proteins in plants.

Cécile Bousquet-Antonelli^1,2

¹CNRS LGDP-UMR5096, 58 Av. Paul Alduy, 66860 Perpignan, France.

Biochemical Society Transactions

|October 28, 2021

Summary

This summary is machine-generated.

The LARP6 protein family evolved uniquely in plants, with specific roles in male fertilization. This research explores conserved functions across eukaryotes, offering insights into RNA binding evolution and crop yield improvement.

Keywords:

LA and related proteins LARP6 RNA-binding proteins mRNA regulations plant biology protein evolution

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Lateral Root Inducible System in Arabidopsis and Maize

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Published on: January 14, 2016

Area of Science:

Molecular Biology
Evolutionary Biology
Plant Science

Background:

RNA binding proteins (RBPs) regulate gene expression and are crucial for development.
The LARP family, characterized by the La motif, has five subfamilies, including LARP6, which possesses a versatile RNA binding unit.
LARP6 expanded and diversified in vascular plants, acquiring distinct roles compared to its single-gene presence in earlier plant lineages.

Purpose of the Study:

To investigate the evolutionary history and functional diversification of the LARP6 subfamily in plants.
To explore conserved cellular and molecular functions of LARP6 across eukaryotes, particularly its role in translation control.
To understand the molecular mechanisms of LARP6, focusing on LARP6C's function in male reproduction for potential crop improvement.

Main Methods:

Comparative evolutionary analysis of LARP6 subfamilies across plant lineages.
Functional studies in *Arabidopsis thaliana* to elucidate LARP6C's role in male fertilization.
Comparative analysis of LARP6 functions between plants (LARP6C) and humans (LARP6) regarding translation and cell migration.

Main Results:

LARP6 underwent expansion and neofunctionalization in vascular plants, leading to three distinct subclusters.
LARP6C in *Arabidopsis thaliana* controls male fertilization via spatiotemporal translation regulation, a role conserved in maize.
Human LARP6 shares functional similarities with LARP6C, including roles in translation control and cell migration via protrusion extension.

Conclusions:

LARP6 proteins exhibit conserved functions in translation regulation and cell dynamics across eukaryotes, despite distinct evolutionary paths.
Understanding LARP6C's molecular function in plant reproduction can drive advancements in crop breeding for enhanced seed yields.
Plants offer a unique model to study the evolution of RNA binding properties and identify basal versus species-specific roles of LARP6.