. Author manuscript; available in PMC: 2022 Mar 1.
Published in final edited form as: Prog Biophys Mol Biol. 2020 Aug 28;160:104–120. doi: 10.1016/j.pbiomolbio.2020.08.006
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).