IgA immunoglobulin complex, circulating monomeric IgA immunoglobulin complex Note that an IgA immunoglobulin complex has the function of antigen binding if a suitable antigen is available. monomeric IgA1 antibody monomeric IgA2 antibody GO:0071748 mah cellular_component monomeric IgA antibody A protein complex composed of two identical immunoglobulin heavy chains of an IgA isotype and two identical immunoglobulin light chains, held together by disulfide bonds, and present in the extracellular space, in mucosal areas or other tissues, or circulating in the blood or lymph. 2010-03-24T01:44:53Z