... °Cor22 °C), by using an alternative expression host{BL21(DE3)[pLysS]} or by including protease inhibi-tors in the solutions used during purification.Kinetic analysis of disease-causing mutationsThe ... protein and from each other. The main effectseen was in the turnover, kcat, and in the specificityconstant, kcat⁄ Km. Again, this contrasts with disease-causing mutations in galactokinase ... hasbeen solved, showing that a valine to methionine substi-tution at this position disrupts the packing close to thesugar-binding site, making it easier for the sugars tobind nonproductively...