Molecular biology / m ə ˈ l ɛ k j ʊ l ər / is a branch of biology that concerns the molecular basis of biological activity between biomolecules in the various systems of a cell, including the interactions between DNA, RNA, proteins and their biosynthesis, as well as the regulation of these interactions. Writing in Nature in 1961, William Astbury described molecular biology as:.
For nearly a quarter century Molecular Biology of the Cell has been the leading cell biology textbook. This tradition continues with the new Fifth Edition, which has been completely revised and updated to describe our current, rapidly advancing understanding of cell biology. Molecular nanotechnology ( MNT) is a technology based on the ability to build structures to complex, atomic specifications by means of mechanosynthesis.