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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Glutamate dehydrogenase activity profiles for type strains of ruminal Prevotella spp.

The glutamate dehydrogenase (GDH) activities for the type strains of Prevotella ruminicola (strain 23), Prevotella brevis (strain GA33), and Prevotella bryantii (strain B(1)4) were assessed by a combination of enzyme assays and analysis of migration patterns of GDH proteins following nondenaturing polyacrylamide gel electrophoresis. Unlike results with most other prokaryotes, but similar to results with other members of the family Bacteroidaceae, NADPH-utilizing specific activity was greatest in all species following ammonia-limited growth. Similar also to previous findings with P. bryantii, the NAD(P)H-utilizing GDH activity of P. ruminicola can be attributed to a single protein. However, P. brevis produces an additional GDH protein(s) in response to growth with peptides. These results conclusively demonstrate that all type strains of the ruminal Prevotella sp. grouping possess GDH activity.[1]


  1. Glutamate dehydrogenase activity profiles for type strains of ruminal Prevotella spp. Wen, Z., Morrison, M. Appl. Environ. Microbiol. (1997) [Pubmed]
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