Final answer:
Bromodomains (BDs) are protein domains that recognize and bind to acetylated lysine residues on histones. They play a crucial role in regulating gene expression. Proteins such as Histone H2B and MYC transcription factors contain a bromodomain.
Step-by-step explanation:
Bromodomains (BDs) are protein domains that are found in a variety of proteins and have the ability to recognize and bind to acetylated lysine residues on histones. These domains play a crucial role in regulating gene expression and are involved in various biological processes. Some proteins that contain a bromodomain include Histone H2B and MYC transcription factors.