NDLI: Aldehyde Dehydrogenases in Arabidopsis thaliana: Biochemical Requirements, Metabolic Pathways, and Functional Analysis

Content Provider	PubMed Central
Author	Naim, Stiti Missihoun, Tagnon D. Kotchoni, Simeon O. Kirch, Hans-hubert Bartels, Dorothea
Copyright Year	2011
Abstract	Aldehyde dehydrogenases (ALDHs) are a family of enzymes which catalyze the oxidation of reactive aldehydes to their corresponding carboxylic acids. Here we summarize molecular genetic and biochemical analyses of selected Arabidopsis ALDH genes. Aldehyde molecules are very reactive and are involved in many metabolic processes but when they accumulate in excess they become toxic. Thus activity of aldehyde dehydrogenases is important in regulating the homeostasis of aldehydes. Overexpression of some ALDH genes demonstrated an improved abiotic stress tolerance. Despite the fact that several reports are available describing a role for specific ALDHs, their precise physiological roles are often still unclear. Therefore a number of genetic and biochemical tools have been generated to address the function with an emphasis on stress-related ALDHs. ALDHs exert their functions in different cellular compartments and often in a developmental and tissue specific manner. To investigate substrate specificity, catalytic efficiencies have been determined using a range of substrates varying in carbon chain length and degree of carbon oxidation. Mutational approaches identified amino acid residues critical for coenzyme usage and enzyme activities.
Related Links	http://dx.doi.org/10.3389/fpls.2011.00065
Starting Page	65
File Format	PDF
ISSN	1664462X
e-ISSN	1664462X
Journal	Frontiers in plant science
Volume Number	2
Language	English
Publisher	Frontiers Research Foundation
Publisher Date	2011-01-01
Access Restriction	Open
Rights Holder	Frontiers Research Foundation
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Plant Science

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