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An efficient modified method for plant leaf lipid extraction results in improved recovery of phosphatidic acid.

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UNASSIGNED Lipidomics plays an important role in understanding plant adaptation to different stresses and improving our knowledge of the genes underlying lipid metabolism. Lipidomics involves lipid extraction, sample preparation, mass spectrometry analysis, and data interpretation. One of the

Primary Fatty Alcohols Are Major Components of Suberized Root Tissues of Arabidopsis in the Form of Alkyl Hydroxycinnamates.

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Suberin is a complex hydrophobic polymer that acts as a barrier controlling water and solute fluxes and restricting pathogen infections. Suberin is deposited immediately outside of the plasmalemma in the cell wall of certain tissues such as endodermis of roots, aerial and underground periderms, and

Selective one-step extraction of Arabidopsis thaliana seed oleosins using organic solvents.

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Oleosins are hydrophobic proteins from oleaginous seeds, surrounding and stabilizing oil bodies. They are known to display interesting interfacial properties. Specific sera were raised against four different A. thaliana oleosins and used in dot-blot assays for oleosin quantification. These assays

Poly(3-hydroxybutyrate-co-4-hydroxybutyrate) formation from gamma-aminobutyrate and glutamate.

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To provide 4-hydroxybutyryl-CoA for poly(3-hydroxybutyrate-co-4-hydroxybutyrate) formation from glutamate in Escherichia coli, an acetyl-CoA:4-hydroxybutyrate CoA transferase from Clostridium kluyveri, a 4-hydroxybutyrate dehydrogenase from Ralstonia eutropha, a gamma-aminobutyrate:2-ketoglutarate

Toward Arabidopsis thaliana hydrophilic metabolome: assessment of extraction methods and quantitative 1H NMR.

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Our goal was to establish the hydrophilic metabolome of heterotrophic Arabidopsis thaliana cells grown in suspension, a cellular model of plant sink tissues. Water-soluble metabolites were extracted using four protocols: perchloric acid, boiling ethanol, methanol and methanol/chloroform (M/Chl).

Metabolic labeling and membrane fractionation for comparative proteomic analysis of Arabidopsis thaliana suspension cell cultures.

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Plasma membrane microdomains are features based on the physical properties of the lipid and sterol environment and have particular roles in signaling processes. Extracting sterol-enriched membrane microdomains from plant cells for proteomic analysis is a difficult task mainly due to multiple

Determination of trehalose-6-phosphate in Arabidopsis seedlings by successive extractions followed by anion exchange chromatography-mass spectrometry.

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A method for the detection of trehalose-6-phosphate (T6P) in tissue of the model plant Arabidopsis thaliana is presented. Liquid-liquid extraction (LLE) and mixed mode solid-phase extraction (SPE) were used for sample pretreatment followed by anion exchange chromatography (AEC) coupled with

Identification of phosphoproteins in Arabidopsis thaliana leaves using polyethylene glycol fractionation, immobilized metal-ion affinity chromatography, two-dimensional gel electrophoresis and mass spectrometry.

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Reversible protein phosphorylation is a key regulatory mechanism in cells. Identification and characterization of phosphoproteins requires specialized enrichment methods, due to the relatively low abundance of these proteins, and is further complicated in plants by the high abundance of Rubisco in

Proteomics of the chloroplast envelope membranes from Arabidopsis thaliana.

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The development of chloroplasts and the integration of their function within a plant cell rely on the presence of a complex biochemical machinery located within their limiting envelope membranes. To provide the most exhaustive view of the protein repertoire of chloroplast envelope membranes, we

Identification of an Arabidopsis fatty alcohol:caffeoyl-Coenzyme A acyltransferase required for the synthesis of alkyl hydroxycinnamates in root waxes.

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While suberin is an insoluble heteropolymer, a number of soluble lipids can be extracted by rapid chloroform dipping of roots. These extracts include esters of saturated long-chain primary alcohols and hydroxycinnamic acids. Such fatty alcohols and hydroxycinnamic acids are also present in suberin.

Fractionation of carbohydrates in Arabidopsis root cell walls shows that three radial swelling loci are specifically involved in cellulose production.

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Three non-allelic radial swelling mutants (rsw1, rsw2 and rsw3) of Arabidopsis thaliana L. Heynh. were shown to be specifically impaired in cellulose production. Fractionation methods that identify, characterise and quantify some of the major cell wall polysaccharides in small quantities of

The hydrophobic proteome of mitochondrial membranes from Arabidopsis cell suspensions.

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The development of mitochondria and the integration of their function within a plant cell rely on the presence of a complex biochemical machinery located within their limiting membranes. The aim of the present work was: (1) to enhance our understanding of the biochemical machinery of mitochondrial

Biosynthesis of camalexin from tryptophan pathway intermediates in cell-suspension cultures of Arabidopsis.

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Camalexin (3-thiazol-2'-yl-indole) is the principal phytoalexin that accumulates in Arabidopsis after infection by fungi or bacteria. Camalexin accumulation was detectable in Arabidopsis cell-suspension cultures 3 to 5 h after inoculation with Cochliobolus carbonum (Race 1), and then increased

Selective Enrichment Coupled with Proteomics to Identify S-Acylated Plasma Membrane Proteins in Arabidopsis

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Protein S-acylation, predominately in the form of palmitoylation, is a reversible lipid post-translational modification on cysteines that plays important roles in protein localization, trafficking, activity, and complex assembly. The functions and regulatory mechanisms of S-acylation have been

An efficient organic solvent based extraction method for the proteomic analysis of Arabidopsis plasma membranes.

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Membrane proteins are involved in diverse cellular processes and are an integral component of many signaling cascades, but due to their highly hydrophobic nature and the complexities associated with studying these proteins in planta, alternative methods are being developed to better characterize

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