The Transcription Complex

Basic Cis-acting Sequences

Enhancers and Silencers


Trans-acting Factors

Signaling Control of Transcription

Hormonal Control of Gene Expression

Signal Transduction Pathways

Study Questions

Control of Gene Expression in Eukaryotes WWW Links

Genetic Topics

Signaling Control of Transcription

Often transcription is activated when a molecule binds to a protein. What happens next is that bound protein undergoes a change that eventually results in the activation of transcription. The molecule that binds is called a ligand, and the protein that binds the protein is called the receptor protein. Ligands can be small molecules such as protein that pass through the cell membrane and activate transcription, or they can be protein molecules that can not move through the cell membrane and must find a receptor protein that resides in the cell membrane. We will discuss each of these models for gene expression.

Copyright © 1997. Phillip McClean