Enzyme screening and direct evolution is a part of Molecular Biology. Molecular biology is a branch of biochemistry which concerns the molecular basis of biological activity between biomolecules in the various systems of a cell, including the interactions between DNA, RNA, and proteins and their biosynthesis, as well as the regulation of these interactions. Our molecular biology department takes the responsibility to study the gene modification of the industrial microorganism, computer aided enzyme design, enzyme’s determinate evolution and high throughput screening.