4G4L:
reference: Comparison of the structures and stabilities of coiled-coil proteins containing hexafluoroleucine and t-butylalanine provides insight into the stabilizing effects of highly fluorinated amino acid side-chains., Buer BC, Meagher JL, Stuckey JA, Marsh EN, Protein Sci. 2012 Nov;21(11):1705-15. doi: 10.1002/pro.2150. Epub 2012 Oct 1. PMID: 22930450

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