<i>Koji </i>mold having large-scale genomic duplication

摘要

The purpose of the present invention is to breed a koji mold, which has improved capability of producing a variety of industrially applicable enzymes, without using the genetic recombination technology. By mutagenizing a strain belonging to the genus Aspergillus, a strain having a duplication of a large-scale genome region of 900 kb or more and is able to produce a variety of enzymes required in manufacturing soy sauce, for example, protease, etc. was obtained. This strain enables efficient production of various foods such as soy sauce.

主权项

1. A strain belonging to Aspergillus oryzae or Aspergillus sojae having a duplication of a genome region that consists of a genome region corresponding to the region A0090003001003-A0090003001259 of SC003 on the second chromosome of Aspergillus oryzae RIB40 (NBRC100959) and wherein the strain is characterized by at least a two-fold increase in protease activity and at least a two-fold increase in α-amylase activity.