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Bergad, P.L. et al.

High performance liquid chromatography determination of cystathionase activity in human and rabbit lenses.

Cystathionase activity has been demonstrated in human and rabbit lenses, using L-homoserine as substrate. The amount of activity found was quite low, 0.05 and 0.08 nmol of alpha-ketobutyrate formed/h/mg protein in human and rabbit lenses, respectively. The human lens cystathionase was found to have a pH maximum of 8.5 and a Km of 23.8 mM for L-homoserine. A sensitive assay, involving the use of high performance liquid chromatography, was developed to measure the small amounts of alpha-ketobutyrate produced.[1]

References

High performance liquid chromatography determination of cystathionase activity in human and rabbit lenses. Bergad, P.L., Rathbun, W.B. Ophthalmic Res. (1986) [Pubmed]

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