J. Biol. Chem., Vol. 255, Issue 14, 6532-6534, 07, 1980
Thermodynamic basis for the abnormal solubility of monoclonal cryoimmunoglobulins
CR Middaugh, EQ Lawson, GW Litman, WA Tisel, DA Mood and A Rosenberg
The thermodynamics of both normal and abnormal (disease-associated) protein
solubility has been examined. It is shown that the atypical behavior of
monoclonal cryoimmunoglobulins can be explained by the formation of one or
a few additional electrostatic contacts or, less frequently, a larger
number of van der Waals interactions in the protein-rich solid phase
relative to normal immunoglobulin. It is hypothesized that
cryoimmunoglobulins represent the outer edge of the solubility distribution
of total serum immunoglobulin.