Bacteria were lysed, DNA and RNA digested, and VLPs were purified via Ni 2+ mediated precipitation. Glycolipids were extracted and VLPs were dialyzed against PBS prior to storage at ~10 mg/ml in 10% glycerol at -80°C. The plasmid used for VLP expression is described previously. The sequence of AP205 monomer used in this study is MANKPMQPITSTANKIVWSDPTRLSTTFSASLLRQRVKVGIAELNNVSGQYVSVYKRP APKPEGCADACVIMPNENQSIRTVISGSAENLATLKAEWETHKRNVDTLFASGNAGL GFLDPTAAIVSSDTTAGSGGAHATANATAHHHHHH.