Specific enzyme activity improved directionally modified enzyme of heparinase I as well as molecular modification method and expression engineered bacterium
A molecular modification, high activity heparinase technology, applied in the field of expression engineering bacteria, heparinase I directed modification enzymes and molecular modification, can solve the problems of low activity, low heparinase I yield, etc., to achieve specific enzyme activity. The effect of improving, large economic value, large industrial application potential
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[0050] The present invention will be described in further detail below in conjunction with specific examples. The following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.
[0051] The raw materials used in the present invention, unless otherwise specified, are conventional commercially available products; the methods used in the present invention, unless otherwise specified, are conventional methods in the art.
[0052] A Directional Modification Enzyme PhHepI of Heparanase I with Increased Specific Enzyme Activity A259D , the nucleotide sequence of which is SEQ ID NO:1.
[0053] The directional transformation enzyme PhHepI of the heparanase I that specific enzyme activity improves as described above A259D The complete amino acid sequence of the highly active heparanase I encoded is SEQ ID NO:2.
[0054] A Directional Modification Enzyme PhHepI of Heparanase I with Increased Specific Enzyme Activity S169D / A259...
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