Antibodies are proteins produced by the body's immune response against an antigen. They bind to foreign substances in the body to "mark" or signal to other parts of the immune response that the substances must be destroyed.
The carbon atom has unique properties that allow it to form covalent bonds to as many as four different atoms, making this versatile element ideal to serve as the basic structural component, or “backbone,” of the macromolecules. Individual carbon atoms have an incomplete outermost electron shell.
