Genes of carotenoid biosynthesis and metabolism and a system for screening for such genes

摘要

The present invention also describes the DNA sequence for eukaryotic genes encoding epsilon cyclase, isopentenyl pyrophosphate isomerase and beta -carotene hydroxylase as well as vectors containing the same and hosts transformed with said vectors. The present invention provides methods for controlling the ratio of various carotenoids in a host and for the production of novel carotenoid pigments. The present invention also provides a method for screening for eukaryotic genes encoding carotenoid biosynthesis.