The preference of the peptidyl-fluoroproline amide bond for the cis or trans conformation in the model compounds N-acetyl-4-fluoroproline methyl esters fully correlates with the thermostability of the related mutants of the model protein barstar. Thus, the (4S)-L-FPro mutants show a higher and the(4R)-L-FPro mutants a lower thermal stability than barstar.
Keywords: NMR spectroscopy; fluorine; isomerization; proline; proteins.
© 2001 WILEY-VCH Verlag GmbH, Weinheim, Fed. Rep. of Germany.