3AY4:
reference: Structural basis for improved efficacy of therapeutic antibodies on defucosylation of their Fc glycans., Mizushima T, Yagi H, Takemoto E, Shibata-Koyama M, Isoda Y, Iida S, Masuda K, Satoh M, Kato K, Genes Cells. 2011 Nov;16(11):1071-1080. doi:, 10.1111/j.1365-2443.2011.01552.x. PMID: 22023369

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