malic enzyme/arabidopsis

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A comprehensive analysis of the NADP-malic enzyme gene family of Arabidopsis.

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The Arabidopsis (Arabidopsis thaliana) genome contains four genes encoding putative NADP-malic enzymes (MEs; AtNADP-ME1-ME4). NADP-ME4 is localized to plastids, whereas the other three isoforms do not possess any predicted organellar targeting sequence and are therefore expected to be cytosolic. The

Arabidopsis thaliana NADP-malic enzyme isoforms: high degree of identity but clearly distinct properties.

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The Arabidopsis thaliana genome contains four NADP-malic enzymes genes (NADP-ME1-4). NADP-ME4 is localized to plastids whereas the other isoforms are cytosolic. NADP-ME2 and 4 are constitutively expressed, while NADP-ME1 is restricted to secondary roots and NADP-ME3 to trichomes and pollen. Although

NAD-malic enzymes of Arabidopsis thaliana display distinct kinetic mechanisms that support differences in physiological control.

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The Arabidopsis thaliana genome contains two genes encoding NAD-MEs [NAD-dependent malic enzymes; NAD-ME1 (TAIR accession number At4G13560) and NAD-ME2 (TAIR accession number At4G00570)]. The encoded proteins are localized to mitochondria and assemble as homo- and hetero- dimers in vitro and in

Three different and tissue-specific NAD-malic enzymes generated by alternative subunit association in Arabidopsis thaliana.

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The Arabidopsis thaliana genome contains two genes encoding the mitochondrial NAD-malic enzyme (NAD-ME), NAD-ME1 (At2g13560) and NAD-ME2 (At4g00570). The characterization of recombinant NAD-ME1 and -2 indicated that both enzymes assemble as active homodimers; however, a heterodimeric enzyme

Arabidopsis NAD-malic enzyme functions as a homodimer and heterodimer and has a major impact on nocturnal metabolism.

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Although the nonphotosynthetic NAD-malic enzyme (NAD-ME) was assumed to play a central role in the metabolite flux through the tricarboxylic acid cycle, the knowledge on this enzyme is still limited. Here, we report on the identification and characterization of two genes encoding mitochondrial

Fumarate and cytosolic pH as modulators of the synthesis or consumption of C(4) organic acids through NADP-malic enzyme in Arabidopsis thaliana.

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Arabidopsis thaliana is a plant species that accumulates high levels of organic acids and uses them as carbon, energy and reducing power sources. Among the enzymes that metabolize these compounds, one of the most important ones is malic enzyme (ME). A. thaliana contains four malic enzymes (NADP-ME

Loss of cytosolic NADP-malic enzyme 2 in Arabidopsis thaliana is associated with enhanced susceptibility to Colletotrichum higginsianum.

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• While photosynthetic NADP-malic enzyme (NADP-ME) has a prominent role in the C(4) cycle, the biological function of nonphotosynthetic isoforms remains elusive. Here, we analysed the link between Arabidopsis thaliana cytosolic NADP-ME2 and the plant defence response. • Arabidopsis thaliana plants

Identification of domains involved in the allosteric regulation of cytosolic Arabidopsis thaliana NADP-malic enzymes.

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The Arabidopsis thaliana genome contains four genes encoding NADP-malic enzymes (NADP-ME1-4). Two isoenzymes, NADP-ME2 and NADP-ME3, which are shown to be located in the cytosol, share a remarkably high degree of identity (90%). However, they display different expression patterns and show distinct

Specific Arabidopsis thaliana malic enzyme isoforms can provide anaplerotic pyruvate carboxylation function in Saccharomyces cerevisiae.

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NAD(P)-malic enzyme (NAD(P)-ME) catalyzes the reversible oxidative decarboxylation of malate to pyruvate, CO2 , and NAD(P)H and is present as a multigene family in Arabidopsis thaliana. The carboxylation reaction catalyzed by purified recombinant Arabidopsis NADP-ME proteins is faster than those

NADP-Dependent Malic Enzyme 1 Participates in the Abscisic Acid Response in Arabidopsis thaliana.

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Arabidopsis thaliana possesses three cytosolic (NADP-ME1-3) and one plastidic (NADP-ME4) NADP-dependent malic enzymes. NADP-ME2 and -ME4 show constitutive expression, in contrast to NADP-ME1 and -ME3, which are restricted to particular tissues. Here, we show that NADP-ME1 transcript and protein were

NADP-MALIC ENZYME 1 affects germination after seed storage in Arabidopsis thaliana.

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Aging decreases the quality of seeds and results in agricultural and economic losses. The damage that occurs at the biochemical level can alter the seed physiological status. Although loss of viability has been investigated frequently, little information exist on the molecular and biochemical

Superior aluminium (Al) tolerance of Stylosanthes is achieved mainly by malate synthesis through an Al-enhanced malic enzyme, SgME1.

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Stylosanthes (stylo) is a dominant leguminous forage in the tropics. Previous studies suggest that stylo has great potential for aluminium (Al) tolerance, but little is known about the underlying mechanism. A novel malic enzyme, SgME1, was identified from the Al-tolerant genotype TPRC2001-1 after 72

Short-Term Low Temperature Induces Nitro-Oxidative Stress that Deregulates the NADP-Malic Enzyme Function by Tyrosine Nitration in Arabidopsis thaliana.

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Low temperature (LT) negatively affects plant growth and development via the alteration of the metabolism of reactive oxygen and nitrogen species (ROS and RNS). Among RNS, tyrosine nitration, the addition of an NO₂ group to a tyrosine residue, can modulate reduced

Loss of function of Arabidopsis NADP-malic enzyme 1 results in enhanced tolerance to aluminum stress.

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In acidic soils, aluminum (Al) toxicity constitutes a significant limitation to crop production worldwide. Given its Al binding capacity, malate allows internal as well as external detoxification strategies to cope with Al stress, but little is known about the metabolic processes involved in this

Differential fumarate binding to Arabidopsis NAD+-malic enzymes 1 and -2 produces an opposite activity modulation.

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Arabidopsis mitochondria contain two NAD(+)-malic enzymes, NAD-ME1 and NAD-ME2. These proteins have similar affinity for their substrates but display opposite regulation by fumarate, which strongly stimulates NAD-ME1 but inhibits NAD-ME2 activity. Here, the interaction of NAD-ME1 and -2 with

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