The present invention relates to engineering new biosynthetic pathways into microorganisms, in particular biosynthetic carotenoid pathways. New and improved catalytic functions of metabolic pathways are created by, for example, site-specific mutation or gene shuffling techniques, to provide for efficient biosynthesis of carotenoids. By applying the described directed evolution techniques, almost any carotenoid could be produced, in a host cell, from one or a few sets of genes. In addition, the described techniques are useful for creating gene or protein libraries for new and uncharacterized carotenoids.
本发明涉及将新的
生物合成途径,特别是类
胡萝卜素生物合成途径工程化到微
生物中。新的和改进的代谢途径的催化功能是通过特定位点突变或
基因重组等技术创造出来的,以提供高效的类
胡萝卜素生物合成。通过应用所述的定向进化技术,几乎任何类
胡萝卜素都可以在宿主细胞中由一组或几组
基因产生。此外,所述技术还可用于创建
基因或蛋白质文库,以获得新的和未定性的类
胡萝卜素。