Superantigen properties of a human sialoprotein involved in gut-associated immunity.


Protein Fv (pFv) is a recently described 175-kD gut-associated sialoprotein with a potent capacity for augmentation of antibody-dependent immune functions. To investigate the molecular basis for Fab-mediated binding of pFv, we evaluated a panel of 52 monoclonal IgM and found that approximately 40% bound pFv. Whereas the majority (> or = 75%) of V H3 and V… (More)

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