کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2057998 1076142 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Identification of enzyme activity that conjugates indole-3-acetic acid to aspartate in immature seeds of pea (Pisum sativum)
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Identification of enzyme activity that conjugates indole-3-acetic acid to aspartate in immature seeds of pea (Pisum sativum)
چکیده انگلیسی

SummaryThis study describes the first identification of plant enzyme activity catalyzing the conjugation of indole-3-acetic acid to amino acids. Enzymatic synthesis of indole-3-acetylaspartate (IAA-Asp) by a crude enzyme preparation from immature seeds of pea (Pisum sativum) was observed. The reaction yielded a product with the same Rf as IAA-Asp standard after thin layer chromatography. The identity of IAA-Asp was verified by HPLC analysis. IAA-Asp formation was dependent on ATP and Mg2+, and was linear during a 60 min period. The enzyme preparation obtained after poly(ethylene glycol) 6000 fractionation showed optimum activity at pH 8.0, and the temperature optimum for IAA-Asp synthesis was 30 °C.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Plant Physiology - Volume 165, Issue 5, 31 March 2008, Pages 564–569
نویسندگان
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