Description: A dimer is a molecule composed of two identical or similar subunits that are joined together. This term is commonly used in biochemistry and molecular biology to describe structures formed from the association of two monomers. Dimers can be homodimers, where the two subunits are identical, or heterodimers, where the subunits are different. The formation of dimers is a crucial phenomenon in many biological processes, as it can influence the stability, activity, and function of molecules. For example, many proteins function as dimers, allowing them to perform specific functions that they could not carry out as monomers. Additionally, dimers can participate in complex molecular interactions, such as the formation of protein complexes, which are essential for regulating various metabolic and cellular signaling pathways. In summary, dimers are fundamental components in molecular biology, playing a vital role in the structure and function of biomolecules.
