Independent valine and leucine isotope labeling in Escherichia coli protein overexpression systems
作者:Roman J. Lichtenecker、Katharina Weinhäupl、Lukas Reuther、Julia Schörghuber、Walther Schmid、Robert Konrat
DOI:10.1007/s10858-013-9786-y
日期:2013.11
t NMR probes. We present a protocol to eliminate leucinelabeling by supplying the medium with unlabeled α-ketoisocaproate. The resulting spectra of a model protein exclusively feature valine signals of increased intensity, confirming the method to be a first example of independent valine and leucinelabeling employing α-ketoacidprecursorcompounds.