In this article we will discuss about the molecular structure of lipids. Lipids are another group of important biological molecules present in all cellular organisms and some viruses. Unlike the other groups of biological molecules, lipids are highly heterogenous in chemical structure. But all of them possess a common physical property which is that they are all non-polar compounds, insoluble [...]
In this article we will discuss about the biosynthesis of murein. A characteristic polymer that forms the backbone of all eubacterial cell wall is peptidoglycan or murein. Murein essentially consists of parallelly running polysaccharide chains, the repeating unit of which is a disaccharide of N-acetyl-glucosamine (NAG) and N-acetyl muramic acid (NAM) having a tetra-peptide bonded to its lactyl group. The [...]
In this article we will discuss about Electron Transport System (ETS) in living organisms. Catabolism of energy-giving substrates (mostly glucose) up to the stage of pyruvic acid through EMP or EDP yields comparatively small amount of energy in the form of ATP by substrate-level phosphorylation. The anaerobic organisms have to be satisfied with this small amount of energy. But the [...]