3CHN:
reference: Location of secretory component on the Fc edge of dimeric IgA1 reveals insight into the role of secretory IgA1 in mucosal immunity., Bonner A, Almogren A, Furtado PB, Kerr MA, Perkins SJ, Mucosal Immunol. 2009 Jan;2(1):74-84. Epub 2008 Oct 8. PMID: 19079336

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).