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5 rezultatus
Molecular cloning and expression of alfalfa (Medicago sativa L.) vestitone reductase, the penultimate enzyme in medicarpin biosynthesis.
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Prisijungti Registracija
Medicarpin, the major phytoalexin in alfalfa, is synthesized by way of the isoflavonoid branch of phenylpropanoid metabolism. One of the final steps of medicarpin biosynthesis, from vestitone to 7,2'-dihydroxy-4'-methoxyisoflavanol, is catalyzed by vestitone reductase. A 1245-bp cDNA clone which
Conversion of vestitone to medicarpin in alfalfa (Medicago sativa L.) is catalyzed by two independent enzymes. Identification, purification, and characterization of vestitone reductase and 7,2'-dihydroxy-4'-methoxyisoflavanol dehydratase.
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Prisijungti Registracija
Pterocarpan phytoalexins are antimicrobial compounds in leguminous plants. The final step of pterocarpan biosynthesis, conversion of vestitone to medicarpin, was thought to be catalyzed by a single enzyme "pterocarpan synthase." We have shown that the pterocarpan synthase activity observed in crude
Crystal structure of vestitone reductase from alfalfa (Medicago sativa L.).
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Isoflavonoids are commonly found in leguminous plants, where they play important roles in plant defense and have significant health benefits for animals and humans. Vestitone reductase catalyzes a stereospecific NADPH-dependent reduction of (3R)-vestitone in the biosynthesis of the antimicrobial
A New isoflavanone phytoalexin from Medicago rugosa.
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Prisijungti Registracija
An isoflavonoid phytoalexin produced by the fungus-inoculated leaflets of Medicago rugosa Desr. has been formulated as (+/-)-7,4'-dimethoxy-2'-hydroxyisoflavanone (isosativanone). This compound cooccurs with the known isoflavonoid fungitoxins, (-)-medicarpin, (-)-vestitol,
Stress responses in alfalfa (Medicago sativa L.) 11. Molecular cloning and expression of alfalfa isoflavone reductase, a key enzyme of isoflavonoid phytoalexin biosynthesis.
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Prisijungti Registracija
The major phytoalexin in alfalfa is the isoflavonoid (-)-medicarpin (or 6aR, 11aR)-medicarpin. Isoflavone reductase (IFR), the penultimate enzyme in medicarpin biosynthesis, is responsible for introducing one of two chiral centers in (-)-medicarpin. We have isolated a 1.18 kb alfalfa cDNA (pIFRalf1)
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