Mutations that disrupt the trpR gene lead to elevated production ... can once again bind to the operator/promoter, quickly turning off expression of the operon, returning expression to basal ...

The answers to such questions lie in the study of gene expression. Thus ... bind near the start of mRNA production for an entire operon, or cluster of coregulated genes. Furthermore, some ...

They inserted these two sequences upstream of a reporter gene and used a colorimetric assay to determine whether the proteins repressed the reporter’s expression based on an absence of color. Their ...

Researchers at the University of Tsukuba have developed a vector that integrates the Cre enzyme gene with the specific DNA ...