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Rapid and sensitive radioassay for dihydroorotase

Journal Article · · J. Appl. Biochem.; (United States)
OSTI ID:5367780

A rapid and simple radiochemical assay for dihydroorotase (DHOase; EC 3.5.2.3) has been developed. DHOase activity is assessed by measuring the amount of L-5,6-dihydro(/sup 14/C)orotate formed from N(/sup 14/C)cerbamyl-L-aspartate in the forward reaction and N(/sup 14/C)carbamly-L-aspartate formed from L-5,6-dihydro(/sup 14/C)orotate in the reverse reaction following the separation of the two compounds by high-voltage paper electrophoresis in an acetic acid/formic acid solution, pH 2.30. The procedure can, in principle, also be applied to the assay of aspartate carbamyl transferase (EC 2.1.3.2) and dihydroorotate dehydrogenase (EC 1.3.3.1).

Research Organization:
Univ. of New South Wales, Kinsington
OSTI ID:
5367780
Journal Information:
J. Appl. Biochem.; (United States), Journal Name: J. Appl. Biochem.; (United States) Vol. 1:1; ISSN JABID
Country of Publication:
United States
Language:
English