Abstract
The accumulation of N-acetylglucosaminidase, an early developmentally regulated enzyme in Dictyostelium discoideum, is dependent upon the action of a heat-stable effector molecule secreted by the cells. Stimulation of enzyme accumulation is inhibited by cycloheximide and actinomycin, suggesting that it requires concomitant RNA and protein synthesis. The effector elutes from Sephadex columns as a molecule of 300 to 1000 daltons. It is stable to treatment with a variety of proteolytic enzymes and mild acid hydrolysis but can be inactivated by prolonged acid hydrolysis.
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