du Pont de Nemours and Company (Wilmington, DE) has patented an isolated nucleic acid fragment encoding a plant enzyme that catalyze steps in the biosynthesis of lysine, threonine, methionine, cysteine and isoleucine from aspartate, the enzyme a member selected from the group consisting of: dihydrodipicolinate reductase, diaminopimelate epimerase, threonine synthase,
threonine deaminase and S-adenosylmethionine synthetase.
In addition, new programs in protein engineering (37) of subtilisin BPN' (3,38-50) and hemoglobin (7,51-56) were carried out as well as detailed structural investigations of a number of enzymes that included ribonuclease (57-64), several glutathione S-transferases (6,65-82), uracil DNA glycosylase (8,83-84), threonine deaminase (85-86), and nucleoside diphosphosphate transferase (87-88).
Gilliland, Polymorphous Crystallization and Diffraction of Threonine Deaminase from Escherichia coil, Acta Crystallogr.
