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Updated: May 19, 2026

Chromatographic Purification of Highly Active Yeast Ribosomes
Published on: October 24, 2011
Large scale purification and structural properties of yeast aspartyl-tRNA synthetase
Abstract:
A large scale purification procedure of baker's yeast aspartyl-tRNA synthetase is described which yields more than 200 mg pure protein starting from 30 Kg of wet commercial cells. The synthetase is an alpha 2 dimer of Mr = 125,000 +/- 5,000 which can be crystallized (J. Mol. Biol. 138, 1980, 129-135). The enzyme has an elongated shape with a Stokes radius of 50 A and a frictional ratio of 1.5. The synthetase has a tendency to aggregate but methods are described where this effect is overcome.
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