thioester bond

A thioester bond is a type of chemical link between molecules, similar to an ester bond but involving sulfur instead of oxygen. It forms when a carboxylic acid derivative reacts with a sulfur atom, creating a connection that is more reactive than regular ester bonds. Thioesters are important in biology, especially in making and breaking proteins and metabolic pathways, because their high reactivity allows quick transfer of groups or energy. This bond’s unique properties help enzymes control biological processes efficiently, acting as a bridge that facilitates vital chemical reactions within cells.