Formation of Sucrose From Malate in Germinating Castor Beans . II. Reaction Sequence From Phosphoenol-Pyruvate to Sucrose.
نویسندگان
چکیده
M14late is a key intermiie(liate in converting acetyl units to sucrose in germinating castor beans (8). In an earlier paper evidence wsas presente(d to show that a mechanism exists for the pro(luction of phosphoenol-pyruvate from nmalate in this material andl that phosphoenol-I)yruvate is an interme(liate in the production of sucrose fromii malate (6). In this paper indivi(lual reactions which formii a sequence leading fronm phosphoenol-p)ruvate to sucrose are (leScribed.
منابع مشابه
Formation of sucrose from malate in germinating castor beans. I. Conversion of malate to phosphoenol-pyruvate.
composed of all the valence electrons of the specimen. In this case, the electrons of the metal are coupled via the photon gas; their actions are not completely independent. Such a situation is not the case in the usual photosynthetic system; equilibrium or quasiequilibrium ideas may not be applied. In this situation each photosynthetic event is completely independent of the other events taking...
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of conversion of fat to carbohydrate in germinating castor beans. Of the four requisite enzymes, isocitritase (Equation 3) has been demonstrated by direct assay (l), while the presence of condensing enzyme (Equation 1), aconitase (Equation 2), and malate synthetase activity (Equation 4) has been inferred from isotope incorporation data. The rates of condensing enzyme and malate synthetase, as e...
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During the germination of fatty seeds such as the castor bean, a rapid conversion of fat to sugar occurs (2). The fatty acids are probably broken down to acetyl units via P-oxidation (3) ; the discovery of the glyoxylate cycle enzymes (4) in the castor bean endosperm (5) provided a mechanism whereby these acetyl units could be quantitatively converted to malate. Since malate could be viewed as ...
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ورودعنوان ژورنال:
- Plant physiology
دوره 37 2 شماره
صفحات -
تاریخ انتشار 1962