<p>An X-ray structural model of a single GroEL/GroES subunit pair taken from PDB structure file 1 AON <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0026462#pone.0026462-Xu1" target="_blank">[3]</a>, depicting the three locations where the N- and C-termini were relocated in the three CP mutants. The locations are indicated by colored CPK representation of the first (N-terminal end) amino acid of each CP mutant, excepting the starting methionine and any extraneous amino acids that were added as a consequence of the experimental protocol (see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0026462#s4" target="_blank">Materials and Methods</a>). The <i>green</i> molecule denotes Glu 209, the <i>yellow</i> molecule Val 254, and the <i>magenta</i> molecule Val 376 in wild type GroEL.</p
