Automated description from the Alliance of Genome Resources (Release 7.0.0)
Enables IgA binding activity and protein-macromolecule adaptor activity. Contributes to immunoglobulin receptor binding activity. Predicted to be involved in several processes, including defense response to symbiont; glomerular filtration; and positive regulation of respiratory burst. Part of dimeric IgA immunoglobulin complex. Is expressed in intestine; serum; and spleen. Orthologous to human JCHAIN (joining chain of multimeric IgA and IgM).