Transformant having galactose induction system and use thereof

摘要

The present invention provides a transformant having a gene expression inducing system having better responsiveness. The transformant of the invention has a galactose induction system and retains a coding region having a galactose induction system and encoding an assisting protein assisting transcription activation by a protein having the Gal4 activity under control of a constitutive promoter, and a coding region encoding an endogenous or exogenous desired protein under control of a galactose-inducible promoter.