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

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Abstract
Evidence is pre-sented that the following enzymes are present in the endosperm tissue of germinating castor beans: 3-phosphoglyceric mutase, enolase, phosphoglyceryl kinase, DPN- and TPN-linked triosephosphate dehydro-genases, aldolase, and uridine diphosphoglucose [forward arrow] glucose transgluco-sylase. These enzymes, acting in the presence of ATP and reduced nucleotide generated during fatty acid oxidation are believed to be responsible for the formation of sucrose from phosphenol-pyruvate which is itself produced from oxalacetate by phosphoenolpyruvate carboxy-kinase.