| 摘要 |
Provided is a prokaryotic expansin protein capable of expanding cellulose. The prokaryotic expansin protein performs the same function as existing plant expansin proteins. The prokaryotic expansin protein can be produced at greatly reduced cost on an industrial scale, unlike plant expansin proteins. Particularly, when lignocellulosic biomass is hydrolyzed into glucose using the prokaryotic expansin protein and cellulase, the hydrolysis rate of cellulose can be markedly increased by the cellulase, resulting in improved yield of the glucose. In actuality, the use of the prokaryotic expansin enables the production of bioenergy at low cost with a reduced amount of enzyme used. The prokaryotic expansin protein softens the textures of pulp, cotton fibers (e.g., jeans), etc. Therefore, the prokaryotic expansin protein can be used for various purposes, such as biopulping and biostoning.
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