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Structure and function of seed lipid-body-associated proteins.

Authors
  • Purkrtova, Zita1
  • Jolivet, Pascale
  • Miquel, Martine
  • Chardot, Thierry
  • 1 UMR 206 Chimie biologique, AgroParisTech, INRA, BP 1, 78850 Thiverval Grignon, France. , (France)
Type
Published Article
Journal
Comptes Rendus Biologies
Publisher
Elsevier
Publication Date
Oct 01, 2008
Volume
331
Issue
10
Pages
746–754
Identifiers
DOI: 10.1016/j.crvi.2008.07.016
PMID: 18926488
Source
Medline
Language
English
License
Unknown

Abstract

Many organisms among the different kingdoms store reserve lipids in discrete subcellular organelles called lipid bodies. In plants, lipid bodies can be found in seeds but also in fruits (olives, ...), and in leaves (plastoglobules). These organelles protect plant lipid reserves against oxidation and hydrolysis until seed germination and seedling establishment. They can be stabilized by specific structural proteins, namely the oleosins and caleosins, which act as natural emulsifiers. Considering the putative role of some of them in controlling the size of lipid bodies, these proteins may constitute important targets for seed improvement both in term of oil seed yield and optimization of technological processes for extraction of oil and storage proteins. We present here an overview of the data on the structure of these proteins, which are scarce, and sometimes contradictory and on their functional roles.

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