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Two forms of NAD-dependent D-mandelate dehydrogenase in Enterococcus faecalis IAM 10071
Yusuke Tamura1, Atsuko Ohkubo, Saho Iwai
1Department of Applied Biological Science, Faculty of Science and Technology, Science University of Tokyo, Noda, Chiba 278-8510, Japan.
Applied and Environmental Microbiology
|February 2, 2002
Abstract:
Two forms of NAD-dependent D-mandelate dehydrogenase (D-ManDHs) were purified from Enterococcus faecalis IAM 10071. While these two enzymes consistently exhibited high activity toward large 2-ketoacid substrates that were branched at the C3 or C4 position, they gave distinctly different K(m) and V(max) values for these substrates and had distinct molecular weights by gel electrophoresis and gel filtration.