Daine L. Melroy

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The average glutathione equivalent concentration in phloem exudate collected from squash fruit (Cucurbita moschata [Duchesne] Poir. var Butternut) and pumpkin fruit (Cucurbita pepo [L.] var Jack-o-lattern) was 1.02 and 0.60 millimolar, respectively. Glutathione reductase (EC 1.6.4.2) activity in phloem exudate from squash and pumpkin fruit averaged 0.48 and(More)
We have examined the synthesis, posttranslational processing, and localization of soybean P34, a member of the papain superfamily. P34 has been identified as a constituent of oil storage organelles or oil bodies isolated from seed lysates and has been assumed to be one of the oil body proteins. Electron microscopic immunocytochemistry with a monoclonal(More)
The effect of monensin on the secretion of α-amylase and other enzymes from the aleurone layer of barley (Hordeum vulgare L. cv. Himalaya) was studied by electrophoresis followed by fluorography and by pulse-chase and organelle-isolation experiments. Monensin markedly inhibits the secretion, but not the synthesis, of α-amylase, acid phosphatase, and at(More)
Protein storage vacuoles (PSVs) in soybean (Glycine max (L.) Merr.) cotyledon cells are formed by subdivision of the central vacuole early in seed maturation. They persist until the fifth or sixth day after germination when the central vacuole re-forms. The major integral membrane protein of PSVs, called Tonoplast Integral Protein or TIP, is highly(More)
The membrane surrounding the oil body contains several different specific polypeptides. To study the biosynthesis and posttranslational modification of these polypeptides we have prepared monoclonal antibodies against purified oil bodies of soybean (Glycine max). Three of the five monoclonals selected recognize a molecular mass 34 kilodalton protein (P34).(More)
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