GENE RELATED TO GROWTH PROMOTING FUNCTION OF ACETIC ACID BACTERIUM, ACETIC ACID BACTERIUM BRED USING THE GENE AND METHOD FOR PRODUCING VINEGAR USING THE ACETIC ACID BACTERIUM

摘要

The invention obtains a novel gene encoding a protein having a growth promoting function of acetic acid bacterium in the presence of a high concentration of acetic acid, develops an acetic acid bacterium in which a high concentration of acetic acid fermenting ability is improved by enhancing the growth promoting function of acetic acid bacterium, and provides a method for producing vinegar which contains a high concentration of acetic acid efficiently in a short period of time using the acetic acid bacterium. By a method of obtaining a gene having the growth promoting function of acetic acid bacterium in the presence of acetic acid by obtaining a gene of a soluble protein which is not insolubilized after a homogenate of acetic acid bacterium is exposed to a high concentration of acetic acid, a novel gene having a function to improve the growth promoting function at a practical level was cloned from a practical acetic acid bacterium belonging to the genus Gluconacetobacter. In a transformant strain in which the gene was introduced to an acetic acid bacterium, a significant growth promoting effect was confirmed when the transformant was cultured in the presence of acetic acid and ethanol.