Oxidation of exogenous NAD(P)H by isolated carrot protoplasts is catalysed by isoperoxidase

Chalmers, J. D. C.; Coleman, J. O. D.; Hawes, Christopher R.

doi:10.1042/bst0140734

Cited by 10 publications

(1 citation statement)

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“…Alternatively, some specific peroxidase isoform might be the only one involved in this so-called ACCoxidase system. There is some similarity between this ACC-oxidase reaction and the oxidation of exogenous NAD(P)H by peroxidase, a reaction that is also dependent on Mn^* but does not depend on the amount of enzyme , Chalmers et al 1986).…”

Section: Discussionmentioning

confidence: 85%

The roles of calcium and manganese ions in the in vitro conversion of 1-aminocyclopropane-1-carboxylic acid to ethylene by lentil root membranes

Penel¹,

Gaspar²,

Crèvecœur³

et al. 1990

Physiol Plant

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H. 1990. The roles of caicium and manganese ions in the in vitro conversion of 1-aminocyclopropane-lcarboxylic acid to ethylene by lentil root membranes. -Physioi. Plant 79: 250-254. Ca^* and Mn^"^ activate the conversion of 1-aminocyclopropane-l-carboxylic acid (ACC) by root microsomes of Vicia lens as they do in other similar systems. The preparation of microsomes in the presence of Mn'* greatly increases their ability to convert ACC into ethylene, without addition of Mn'* in the reaction mixture. Ca^"d oes not have this property. The effect could not be attributed to Mn^^ entrapping into membrane vesicles (sonication followed by repelleting had no effect) but, possibly, in part to Mn^* retention by the membranes themselves. Other experiments indicate an Mn^'*'-mediated binding to microsomes of a soluble factor favouring the conversion of ACC to C2H4. Although no direct correlation could be established in vitro between ethylene-fomning-enzyme (EFE) and peroxidase activities, some soluble peroxidases might be this soluble factor. Mn^* favoured attachment to metnbranes of some peroxidase activity from the soluble fraction and from commercial HRP and lipoxygenase. This binding effect of Mn^* cannot be readily distinguished from its role in the generation of a chain of free radicals and in redox mechanisms.

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Section: Discussionmentioning

confidence: 85%

The roles of calcium and manganese ions in the in vitro conversion of 1-aminocyclopropane-1-carboxylic acid to ethylene by lentil root membranes

Penel¹,

Gaspar²,

Crèvecœur³

et al. 1990

Physiol Plant

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The application of new aminoorganic silanes for affinity chromatography of plant peroxidases on vanillin‐liganded controlled porosity glass columns

Rogalski

Dawidowicz

Kapusta

et al. 1989

Acta Biotechnologica

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I n this work, new packings consisting of home made controlled porosity glass, new self-prepared aminoorganic silanes and vanillin as a ligand were used for affinity chromatography of some plant peroxidases (donor: H,O, oxidoreductases; EC 1.11.1.7). The procedure allowed simple and relatively high purification of enzymes. The resnlts were compared with those obtained with the material including commercially available y-aminopropyltriethoxysilane.

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Reduction-Oxidation Activities of Plant Plasmamembranes

Coleman

Chalmers

1988

Plasma Membrane Oxidoreductases in Control of Animal and Plant Growth

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Oxidation of exogenous NAD(P)H by isolated carrot protoplasts is catalysed by isoperoxidase

Cited by 10 publications

References 0 publications

The roles of calcium and manganese ions in the in vitro conversion of 1-aminocyclopropane-1-carboxylic acid to ethylene by lentil root membranes

The roles of calcium and manganese ions in the in vitro conversion of 1-aminocyclopropane-1-carboxylic acid to ethylene by lentil root membranes

The application of new aminoorganic silanes for affinity chromatography of plant peroxidases on vanillin‐liganded controlled porosity glass columns

Reduction-Oxidation Activities of Plant Plasmamembranes

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