What is the concept of regulation of the activity of gene promoters?
hormones aren’t gene promoters. promoters are sequences of DNA upstream of the gene where RNA polymerase first binds, along with a whole bunch of other factors, including enhancers and silencer proteins. hormones will usually only bind to proteins on the cell surface. they’re communication molecules, which bind receptor proteins on the target cell, which transfers that signal into the cell, and through a cascade of proteins, it finally reaches the promoter, where an affected protein can either bind to it to enhance RNA polymerase binding, which would enhance gene expression, or repress it. a lot of hormones in one way or another act like this.
