Valyl-tRNA synthetase from Escherichia coli MALDI-MS identification of the binding sites for L-valine or for noncognate amino acids upon qualitative comparative labeling with reactive amino-acid analogs.

Valyl-tRNA synthetase from Escherichia coli MALDI-MS identification of the binding sites for L-valine or for noncognate amino acids upon qualitative comparative labeling with reactive amino-acid analogs.