Plants, like animals, use proteins to carry out the cellular functions that keep them alive. The protein composition is determined by the information present in the cellular DNA, but to exercise their biological function, the proteins must also be folded in a 3D configuration, like the correctly folded paper plane. However, in stress situations, such as a sudden increase in temperature, cause missteps in the folding process, thus producing misfolded proteins that have to be either removed or repaired. Otherwise they could cluster and form toxic aggregates.