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Cell Signaling in Plants01:25

Cell Signaling in Plants

Plant cells communicate to coordinate their cycle of growth, flowering and fruiting, and activities in roots, shoots, and leaves in response to the changing environmental conditions. Plant signaling is distinct from animal signaling. Plants primarily utilize enzyme-linked receptors, whereas the largest class of cell-surface receptors in animals are G-protein coupled receptors (GPCRs). Unlike animals, receptor tyrosine kinases are rare in plants. Instead, plants have a diverse class of...
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Covalently Linked Protein Regulators02:04

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Identification of Post-translational Modifications of Plant Protein Complexes
10:07

Identification of Post-translational Modifications of Plant Protein Complexes

Published on: February 22, 2014

O-GlcNAc protein modification in plants: Evolution and function.

Neil E Olszewski1, Christopher M West, Slim O Sassi

  • 1Department of Plant Biology, Microbial and Plant Genomics Institute, 250 Biological Sciences Center, 1445 Gortner Ave., St. Paul, MN 55108, USA. neil@umn.edu

Biochimica Et Biophysica Acta
|December 8, 2009
PubMed
Summary
This summary is machine-generated.

Plants possess two distinct O-linked N-acetylglucosamine transferases (OGTs), SEC- and SPY-like, crucial for protein modification. These OGTs are essential for diverse plant processes, though their precise mechanisms remain largely unknown.

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Area of Science:

  • Plant Biology
  • Molecular Biology
  • Evolutionary Biology

Background:

  • Posttranslational modification of proteins with O-linked N-acetylglucosamine (O-GlcNAc) plays a vital role in plants.
  • O-GlcNAc transferases (OGTs) are responsible for catalyzing this essential modification.

Purpose of the Study:

  • To review the role of O-GlcNAc modification in plants.
  • To investigate the evolution and function of plant OGTs.
  • To understand the significance of O-GlcNAc modification in plant processes.

Main Methods:

  • Phylogenetic analysis of eukaryotic OGTs.
  • Analysis of sec and spy single and double mutants in plants.
  • Review of existing literature on OGT function and O-GlcNAc modification.

Main Results:

  • Plants possess two distinct OGT types, SEC-like and SPY-like, potentially originating from prokaryotes.
  • SPY-like OGTs may have originated from a photosynthetic endosymbiont.
  • O-GlcNAc modification is essential, impacting plant hormone responses, development, and virus infection.

Conclusions:

  • Plant OGTs have unique and overlapping roles, essential for diverse biological processes.
  • Further research is needed to elucidate the specific mechanisms of O-GlcNAc modification and identify modified proteins.