Metabolic engineering strategies for the improvement of cellulase production by Hypocrea jecorina.

Metabolic engineering strategies for the improvement of cellulase production by Hypocrea jecorina.
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DOI:
10.1186/1754-6834-2-19
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发表时间:
2009-09-01
影响因子:
6.3
通讯作者:
Seiboth B
Seiboth B
中科院分区:
工程技术1区
文献类型:
--
作者:
Kubicek CP;Mikus M;Schuster A;Schmoll M;Seiboth B

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红褐肉座菌(Hypocrea jecorina)(=里氏木霉(Trichoderma reesei))是纤维素酶和半纤维素酶的主要工业来源,所述纤维素酶和半纤维素酶用于将植物生物质解聚成单糖,所述单糖被转化成化学中间体和生物燃料,例如乙醇。纤维素酶是适应性形成的,现在已知参与这种调节的几种阳性(XYR 1,ACE 2,HAP 2/3/5)和阴性(ACE 1,CRE 1)组分。此外,其完整的基因组序列最近已公布,从而使生物体易于通过代谢工程进行靶向改进。在这篇综述中,我们总结了目前的知识纤维素酶的生物合成是如何调节,并概述了最近的方法和合适的策略,促进有针对性的改进纤维素酶生产的基因工程。
Hypocrea jecorina (= Trichoderma reesei) is the main industrial source of cellulases and hemicellulases used to depolymerise plant biomass to simple sugars that are converted to chemical intermediates and biofuels, such as ethanol. Cellulases are formed adaptively, and several positive (XYR1, ACE2, HAP2/3/5) and negative (ACE1, CRE1) components involved in this regulation are now known. In addition, its complete genome sequence has been recently published, thus making the organism susceptible to targeted improvement by metabolic engineering. In this review, we summarise current knowledge about how cellulase biosynthesis is regulated, and outline recent approaches and suitable strategies for facilitating the targeted improvement of cellulase production by genetic engineering.
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