Acetone precipitation was done according to
Fic, Kedracka-Krok,
Jankowska, Pirog & Dziezicka-Wasylewska (2010)
with slight
modifications. Four volumes of cold acetone (
20
C) were added
to one volume of melted jelly. The mixture was vortexed and kept
overnight at
20
C. The mixture was then centrifuged at
14,000 rpm for 10 min. The supernatant was discarded and the
acetone residue was air-dried from the protein pellet. The protein
pellet was used for SDS–PAGE.