Preliminary biophysical characterization of the IPR009482 protein family. (A) Circular dichroism scans of AF2079, AF2080, and AF2081. (B) A 16% acrylamide native gel of AF2077, AF2079, AF2080, and AF2081 (C) A 12% native gel of carboxysome shell proteins CcmK1, K2, K3, and K4, from the BMC protein family, illustrating similar oligomerization tendencies.