Abstract
Two Waldenström Microglobulins were reduced with increasing amounts of dithiothreitol ranging from 0.25 to 2.0 mM. Disruption of intersubunit, interchain and μ‐J chain disulfide bonds was measured by determining the amount of IgMs, μ chains and J chains released at a given DTT concentration. Intersubunit bonds were most labile, while S‐S bonds linking μ and J chains were most resistant to reductive cleavage.