L-threonine genetic engineering production bacteria

A technology of genetic engineering and threonine, which is applied in the field of L-threonine genetic engineering to produce bacteria, can solve the problems of increasing industrial production costs, achieve increased yield and sugar-acid conversion rate, wide industrial application prospects, and low production costs Effect
CN104862329AActive Publication Date: 2015-08-26SHANGHAI RES & DEV CENT OF INDAL BIOTECH +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI RES & DEV CENT OF INDAL BIOTECH
Publication Date
2015-08-26

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Abstract

The present invention provides L-threonine genetic engineering production bacteria with the preservation number of CCTCC M 2015233. The constructed L-threonine genetic engineering production bacteria can implement effective accumulation of L-threonine in a fermented liquid in the fermentation process, L-threonine yield and sugar acid conversion rate can be improved, no any amino acid is added in the fermentation process, production cost is low, and the method has wide industrial application prospect.
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Description

technical field

[0001] The invention belongs to the technical field of genetic engineering, and in particular relates to a gene engineering production bacterium of L-threonine. Background technique

[0002] As one of the eight essential amino acids for humans and animals, L-threonine plays an important role in the growth and development of humans and animals. L-threonine is widely used in feed additives, food industry and pharmaceutical products, etc. .

[0003] The synthesis of L-threonine mainly consists of protein hydrolysis, chemical synthesis, enzyme and fermentation. The first three methods cannot meet the purpose of industrial production due to various disadvantages. The direct fermentation method has been used as the main method for synthesizing L-threonine due to its low cost and low pollution.

[0004] In the 1950s, Japan was the first to use the method of adding precursors to ferment and produce threonine. In the 1960s, it was reported that L-threonine was synth...

Claims

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