Formation of Sucrose From Malate in Germinating Castor Beans . II. Reaction Sequence From Phosphoenol-Pyruvate to Sucrose

Malate is a key intermediate in converting acetyl units to sucrose in germinating castor beans (8). In an earlier paper evidence was presented to show that a mechanism exists for the production of phosphoenol-pyruvate from malate in this material and that phosphoenol-pyruvate is an intermediate in the production of sucrose from malate (6). In this paper individual reactions which form a sequence leading from phosphoenol-pyruvate to sucrose are described.