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首页> 外文期刊>International Journal of Molecular Sciences >Substrate-Related Factors Affecting Cellulosome-Induced Hydrolysis for Lignocellulose Valorization
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Substrate-Related Factors Affecting Cellulosome-Induced Hydrolysis for Lignocellulose Valorization

机译：底物相关因素影响纤维素诱导木质素纤维素的水解

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摘要

Cellulosomes are an extracellular supramolecular multienzyme complex that can efficiently degrade cellulose and hemicelluloses in plant cell walls. The structural and unique subunit arrangement of cellulosomes can promote its adhesion to the insoluble substrates, thus providing individual microbial cells with a direct competence in the utilization of cellulosic biomass. Significant progress has been achieved in revealing the structures and functions of cellulosomes, but a knowledge gap still exists in understanding the interaction between cellulosome and lignocellulosic substrate for those derived from biorefinery pretreatment of agricultural crops. The cellulosomic saccharification of lignocellulose is affected by various substrate-related physical and chemical factors, including native (untreated) wood lignin content, the extent of lignin and xylan removal by pretreatment, lignin structure, substrate size, and of course substrate pore surface area or substrate accessibility to cellulose. Herein, we summarize the cellulosome structure, substrate-related factors, and regulatory mechanisms in the host cells. We discuss the latest advances in specific strategies of cellulosome-induced hydrolysis, which can function in the reaction kinetics and the overall progress of biorefineries based on lignocellulosic feedstocks.
机译：纤维素是一种细胞外超分子多酶复合物，可以有效降解植物细胞壁中的纤维素和半纤维素。纤维素小体的结构和独特的亚基排列可以促进其与不溶性底物的粘附，从而为单个微生物细胞提供直接利用纤维素生物质的能力。在揭示纤维素体的结构和功能方面已经取得了重大进展，但是对于从农作物的生物精制预处理中得到的纤维素酶和木质纤维素底物之间的相互作用的理解仍然存在知识空白。木质纤维素的纤维素糖化受到各种与底物相关的物理和化学因素的影响，包括天然（未经处理的）木材木质素含量，通过预处理去除的木质素和木聚糖的程度，木质素结构，底物大小，当然还有底物孔表面积或底物对纤维素的可及性。在本文中，我们总结了宿主细胞中的纤维素体结构，底物相关因子和调控机制。我们讨论了纤维素诱导的水解的特定策略的最新进展，可以在反应动力学和基于木质纤维素原料的生物精炼厂的整体进展中发挥作用。

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