https://sites.lifesci.ucla.edu/mbi-home/wp-content/uploads/sites/191/2015/08/UCL_MBI_logo_40.gif00galkin2https://sites.lifesci.ucla.edu/mbi-home/wp-content/uploads/sites/191/2015/08/UCL_MBI_logo_40.gifgalkin22015-09-18 10:29:252015-09-18 10:29:25Cleavage of the human immunoglobulin A1 (IgA1) hinge region by IgA1 proteases requires structures in the Fc region of IgA.