Figure 4
From: Stability and assembly in vitro of bacteriophage PP7 virus-like particles
SDS polyacrylamide gel electrophoresis of the products of reduction of PP7 and 2PP7 VLPs with varying concentrations of DTT. Note that PP7 pentamers and hexamers each occur in two electrophoretic forms. Before reduction most pentamers and hexamers are circularly cross-linked around the 5-fold and quasi-6-fold viral axes. We call these c5-mers and c6-mers. Breaking one of the disulfides in the ring leads to linear pentamers and hexamers.