Antigen-Antibody Interactions. Dr. Conrad Sept. 10,2008. Antigenicity. Requirements to be an immunogen Low mw antigens (haptens) Adjuvants Primary vs secondary responses. Concept of a Hapten. r/c = Kn-Kr. c = concentration of free antigen (hapten) K = K a = equilibrium constant
c = concentration of free antigen (hapten)
K = Ka = equilibrium constant
r = hapten bound per unit Ab
n = Valence of Ab
3 lines of evidence
Same vs binding a different antigen epitope
Avidity – sum total or strength of binding of two molecules (or cells) to one another at multiple sites. Distinct from affinity which is the strength of binding of one site on a molecule to its ligand.