<p>Inserted boxed peaks are INEPT and CP signals for the unresolved peaks from C<sub>4–7</sub> and C<sub>12–15</sub> adjusted for protein CP signal by baseline correction. Spectra are scaled to give equal protein CP intensity at 20 ppm. Filled dark spots in cryo-TEM images are technique dependent frost defects and are not part of the experimental system. More representative images can be found in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0077235#pone.0077235.s004" target="_blank">Figure S4</a>.</p
