Weir AN, Bucke C, Holt G, Lilly MD, Bull AT. A high-performance liquid chromatography method for the simultaneous assay of diaminopimelate epimerase and decarboxylase.
Anal Biochem 1989;
180:298-302. [PMID:
2510546 DOI:
10.1016/0003-2697(89)90434-x]
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Abstract
A sensitive and comparatively simple method for the assay of diaminopimelate (DAP) decarboxylase, which simultaneously monitors DAP epimerase activity, in the reverse of the biosynthetic direction, is described. The substrate, meso-DAP and products LL-DAP and L-lysine are derivatized with o-phthaldialdehyde and resolved by reversed-phase high-performance liquid chromatography. Separation is achieved on a Spherisorb C18 column using a gradient elution system. This technique offers a high degree of sensitivity as the detection method described can measure picomole quantities of substrate and products.
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