Schematic representation of PSIA.

<p>Left panel illustrates the main stages of PSIA. Right panel describes the procedures for DRAF isolation. For details, see <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0116003#s4" target="_blank">Materials and methods</a>. *1% and 0.1% SDS can be used instead of 3% and 0.3% sarkosyl in steps 5 and 6, respectively.</p>