Pepsin digestion of human G-myeloma proteins of different subclasses. II. Immunochemical investigations of the products of peptic digestion.

  • 1 November 1970
    • journal article
    • Vol. 7  (5) , 627-40
Abstract
Immunochemical comparisons have been made of the F(ab')2 and the pFc' fragments of each of the four subclasses of human IgG. The F(ab')2 fragments of IgG 3 proteins were found to exhibit anomalous gel-filtration behaviour compared with similar fragments from the other subclasses. This difference was unrelated to carbohydrate content and may indicate a unique conformation for IgG 3 molecules.