pathways of ammonia assimilation into glutamic acid in bacillus azotofixans , a recently characterized nitrogen-fixing species of bacillus , were investigated through observation by nmr spectroscopy of in vivo incorporation of 15n into glutamine and glutamic acid in the absence and presence of inhibitors of ammonia-assimilating enzymes , in combination with measurements of the specific activities of glutamate dehydrogenase , glutamine synthetase , glutamate synthase , and alanine dehydrogenase .
C0017797
glutamine
C0061472
glutamic acid