Modified Glycine Oxidase

摘要

The present invention provides a novel enzyme and methods of using the enzyme for measuring glycine concentration. Specifically, the present invention provides an enzyme in which at least one amino acid residue is mutated so as to improve a property of a glycine oxidase which is associated with the measurement of glycine (e.g., activity of glycine oxidase for glycine, thermal stability of glycine oxidase, and substrate specificity of glycine oxidase for glycine,); and a method of analyzing glycine, that includes measuring glycine contained in a test sample using the modified enzyme; and the like.

主权项

1. A glycine oxidase enzyme comprising a mutation of at least one amino acid residue, wherein said mutation results in the improvement of one or more properties of said glycine oxidase which are associated with measurement of glycine as compared to said glycine oxidase that does not comprise said mutation, wherein the one or more properties are selected from the group consisting of:
(a) an activity of the glycine oxidase for glycine; (b) a thermal stability of the glycine oxidase; and (c) a substrate specificity of the glycine oxidase for glycine.