Phosphoserine Aminotransferase in Soybean Root Nodules
نویسندگان
چکیده
منابع مشابه
Peptidohydrolases of Soybean Root Nodules
Nodule extracts prepared from Glycine max var Woodworth possessed endopeptidase, aminoptidase, and carboxypeptidase actiities. Three distinct endopeptidase activities could be resolved by disc-gel electrophoresis at pH 8.8. According to their order of increasing electrophoretic mobility, the first of these enzymes hydrolyzed azocasein and n-benzoyl-LLeu-p8-naphthylamide, while the second hydrol...
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AP is involved in the destruction of harmful H202. In soybean (Glycine m a x [LI Merr.) root nodules, AP initiates a sequence of coupled redox reactions (ascorbate-GSH pathway) that results in peroxide scavenging (Dalton et al., 1986). The ascorbate-GSH pathway occurs in other plant tissues and has been extensively studied in chloroplasts where photoreducing conditions lead to the production of...
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Phosphoserine aminotransferase has been purified about 500-fold from sheep brain extracts by ammonium sulfate precipitation and Sephadex and diethylaminoethyl cellulose chromatography. On ultracentrifugation, the enzyme migrated in a single peak with a sedimentation constant of 4.2 S. The molecular weight determined by the Trautman modification of the Archibald method is 96,000. The spectrum of...
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Glutathione S-transferases (GSTs) are ubiquitous enzymes that catalyze the conjugation of toxic xenobiotics and oxidatively produced compounds to reduced glutathione, which facilitates their metabolism, sequestration, or removal. We report here that soybean (Glycine max) root nodules contain at least 14 forms of GST, with GST9 being most prevalent, as measured by both real-time reverse transcri...
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Asparaginase activity (</=1 mumol/mg protein . hr) was detected in extracts of soybean (Glycine max [L.] Merr.) leaf blades, but, even after efforts to optimize extraction and assay of the enzyme, specific activity was not sufficient to metabolize the estimated amount of asparagine translocated to leaves. Asparagine transaminase activity with glyoxylate or pyruvate was at least 52 and 62 nmol/m...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1986
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.81.1.293