Recently we demonstrated that incorporating p-fluorophenylalanine (pFF) into phosphotriesterase dramatically improved folding, thereby leading to enhanced stability and function at elevated temperatures. To further improve the stability of the fluorinated enzyme, Rosetta was used to identify multiple potential stabilizing mutations. One such variant, pFF-F104A, exhibited enhanced activity at elevated temperature and maintained activity over many days in solution at room temperature.
Keywords: amino acids; biosynthesis; computational design; half-life; noncanonical amino acids; stability.
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.