Backbone, or main chain, is the general term used to describe the connecting chain in polymers. Different kinds of polymers have different chemical backbones. For example, in proteins the backbone is a polypeptide chain, but nucleic acids have a sugar phosphate backbone. The backbone of a polymer, which may adopt a regular structural conformation, is the constant or repeating part of the polymer, as opposed to the attached side chains, which can be variable.
Backbone (Molecular Biology)
Next post: Bacteriocins (Molecular Biology)
Previous post: B-DNA (Molecular Biology)