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Phosphoenolpyruvate carboxylase (PEPC) from soybean (Glycine max L.Merr.) nodules was purified 187-fold to a final specific activity of 56 units mg-1 of protein. Sodium dodecyl sulfate (SDS) polyacrylamide gel electrophoresis (PAGE) revealed one major polypeptide band, with a molecular mass of 110
The unusual tolerance to heat stress of STR7, an atrazine-resistant mutant isolated from photosynthetic cell-suspension cultures of soybean (Glycine max L. Merr. cv. Corsoy) and characterized previously [M. Alfonso et al. (1996) Plant Physiol 112:1499-1508] has been studied. The STR7 mutant
Stability and unfolding of mammalian and microbial α-amylases have been intensively investigated. However, there is only limited information available on the structural stability of plant α-amylases, namely of the two isoenzymes from barley AMY1 and AMY2, of the α-amylase from mung bean (Vigna
The degradation rates of phospholipids in soybean (Glycine max L. Merrill) suspension cultures were studied by pulse-chase experiments. The only chloroform-soluble product of incorporation of radioactive choline was phosphatidylcholine, the bulk of which had a half-life of 36 hours. Ethanolamine was
CDP-1,2-diacyl-sn-glycerol (CDP-diacylglycerol):myo-inositol phosphatidyltransferase (EC 2.7.8.11, phosphatidylinositol synthase) catalyzes the final step in the de novo synthesis of phosphatidylinositol in the endoplasmic reticulum fraction of germinating soybeans (Glycine max L. var Cutler 71). A
The triacylglycerol (TAG) pathway provides several targets for genetic engineering to optimize microalgal lipid productivity. GPAT (glycerol-3-phosphate acyltransferase) is a crucial enzyme that catalyzes the initial step of TAG biosynthesis. Despite many recent biochemical studies, a comprehensive
Freezing of plant tissue adversely affects lipid composition. Immature soybean cotyledons (Glycine max L. Merr.) var. "Harosoy 63" were frozen with liquid N(2), dry ice, or stored in a freezer (-20 C) before lipid extraction. The effects of freezing temperature, thawing rate, and cold storage on the
Metabolism of lipid molecular species in soybean cotyledons (Glycine max [L.] Merr. var. "Harosoy 63") was determined from incorporation studies with radioactive acetate and glycerol. Lipid synthetic activity was highest in immature cotyledons at 30 days after flowering. Distinct differences in
The incorporation of phospholipids specifically labeled with glycerol-2(3)H and acyl-(14)C by whole cell tissues of developing soybean cotyledons (Glycine max L.) reveals that phosphatidylinositol, phosphatidylcholine, phosphatidylethanolamine, N-acylphosphatidylethanolamine, and phosphatidic acid
The metabolic activity of individual lipid classes found in developing soybean cotyledons (Glycine max.) is estimated by determining the degradation rate of the compound under given conditions. Pulse-labeling and dual substrate labeling are used to evaluate this parameter. These studies indicate
The control of ammonia formation during the Bacillus subtilis fermentation of autoclaved, roasted soybean cotyledons (Glycine max) and of autoclaved African locust bean cotyledons (Parkia spp.) was investigated. Addition of NaCl, 1.5 mol (kg wet cotyledons)-1, part way through the fermentation
Seed triacylglycerol (TAG) biosynthesis involves a metabolic network containing multiple different diacylglycerol (DAG) and acyl donor substrate pools. This network of pathways overlaps with those for essential membrane lipid synthesis and utilizes multiple different classes of TAG biosynthetic
Incubation of photomixotrophic cell suspension cultures of rape (Brassica napus) and heterotrophic cell suspension cultures of soya (Glycine max) with 1-O-[1'-14C]hexadecyl-sn-glycerol or rac-1-O-[1'-14C]hexadecylglycerol leads in high yield (up to 78%) to labeled
Heterotrophic cell suspension cultures of soya (Glycine max) and photomixotrophic cell suspension cultures of rape (Brassica napus) were incubated with cis-9-[1-(14)C]octadecenol for 3-48 h. It was found that under aerobic conditions large proportions of the alcohol are oxidized to oleic acid, which
Addition of the animal ether phospholipid platelet-activating factor, 1-0-alkyl-2-acetyl-sn-glycero-3-phosphocholine, (PAF) stimulates medium acidification in cultured soybean (Glycine max L.) cells. The pH of the medium after 8-10 hours is on the average one pH unit lower than in controls. With