Stereospecific Nuclear Magnetic Resonance Assignments of the Methyl Groups of Valine and Leucine in the DNA-Binding Domain of the 434 Repressor by Biosynthetically Directed Fractional 13C Labeling - Neri, Dario; Szyperski, Thomas; Otting, Gottfried; Senn, Hans; Wuthrich, Kurt (Biological Magnetic Resonance Bank, 1995)