A biological boronate: An orthogonal tRNA/aminoacyl‐tRNA synthetase pair has been evolved for the genetic incorporation of a boronic acid into proteins. This amino acid has been used to purify proteins in a one‐step scarless purification procedure as well as for the site‐specific labeling of proteins using various boronic acid chemistries.
It is shown for the first time that liquid crystal behavior can be induced through halogen bonding. Thus, mixing the nonmesomorphic components 4-alkoxystilbazole with pentafluoroiodobenzene leads to a 1:1 halogen-bonded complex whose integrity is shown by X-ray single-crystal analysis and which shows thermotropic smectic A and nematic phases.
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