Encyclopedia of Lipidomics

Living Edition
| Editors: Markus R. Wenk

Diacylglycerol in Plants: Functional Diversity of

  • Krzysztof Zienkiewicz
  • Till Ischebeck
Living reference work entry
DOI: https://doi.org/10.1007/978-94-007-7864-1_139-1

Synonyms

Definition

Acylglycerols (glycerides) – esters of glycerol and fatty acids. Depending on how many of the three hydroxyl functional groups of glycerol are esterified, monoglycerides monoacylglycerols (monoglycerides), diacylglycerols (diglycerides), or triacylglycerols (triglycerides) can be formed.

Structure, Synthesis, and Occurrence

Diacylglycerol (DAG), termed also as diglyceride is an acylglycerol composed of a glycerol backbone where two of three hydroxy groups are esterified with fatty acid (FA) chains. Depending on which hydroxyl group of glycerol is esterified DAG can exist in three stereochemical forms: sn-1,2-diacylglycerol and sn-2,3-diacylglycerol (termed also α,β-diacylglycerols) as well as sn-1,3-diacylglycerol (termed also α,α’-diacylglycerol) (Fig. 1). In most plant species, DAG is present at low abundance, when compared to triacylglycerols (TAG) (Table 1).

Keywords

Functional Diversity Phosphatidic Acid Phosphatidic Acid Inositol Polyphosphates Phosphatidic Acid Phosphatase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer Science+Business Media B.V. 2017

Authors and Affiliations

  1. 1.Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant SciencesGeorg-August-University GoettingenGoettingenGermany