Tobacco

mosaic virus The Tobacco Mosaic Virus (TMV) is a virus that infects plants, particularly tobacco plants, causing them to develop an unhealthy mottled appearance. It is one of the oldest known plant viruses and has become an important model for studies of the structure and function of viruses. The virus is comprised of a single strand of RNA surrounded by a protein coat. It replicates inside host cells and spreads to other cells via cell-to-cell contact. TMV is of great significance in the field of molecular biology as it has been used to study gene expression, gene regulation, protein synthesis, and other important biological processes. In addition, its proteins can be used as a template for the design of drugs and vaccines that target other plant viruses.