| 摘要 |
Genes have been isolated from strain DC260, a member of the Enterobacteriaceae family, encoding geranylgeranyl pyrophosphate (GGPP) synthetase (CrtE), phytoene synthase (CrtB), phytoene desaturase (Crtl), lycopene cyclase (CrtY), ß-carotene hydroxylase (CrtZ), and zeaxanthin glucosyl tranferase (CrtX) activity. The genes and their products are useful for the conversion of farnesyl phyrophosphate to carotenoids. Vectors containing those DNA segments, host cells containing the vectors and methods for producing those enzymes b recombinant DNA technology in transformed host organisms are disclosed. |
