Abstract
J3-domain of metallothionein-3/growth inhibitory factor(MT-3/GIF) is crucial to the neuronal growth inhibitory activity of MT-3. The MT-3 J3 domain was efficiently expressed as the soluble fusion form with GST protein at a high level which accounted for over 30% total cellular proteins. After the thrombin cleavage and purification, the bioactive recombinant MT-3 J3 domain was recovered with the yield of 6 mg/L of medium.