相关实验视频

Updated: Jun 20, 2026

Methods for Facilitating Microbial Growth on Pulp Mill Waste Streams and Characterization of the Biodegradation Potential of Cultured Microbes

Methods for Facilitating Microbial Growth on Pulp Mill Waste Streams and Characterization of the Biodegradation Potential of Cultured Microbes

Published on: December 12, 2013

一种来自Talaromyces rugulosus的新型AA14LPMO具有双功能纤维溶解/半纤维溶解活性,可促进纤维素水解

Kaixiang Chen¹, Xu Zhao¹, Peiyu Zhang¹

¹The Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Jiangsu Key Lab for the Chemistry & Utilization of Agricultural and Forest Biomass, College of Chemical Engineering, Nanjing Forestry University, Nanjing, 210037, Jiangsu, China.

Biotechnology for biofuels and bioproducts

|February 23, 2024

概括

来自Talaromyces rugulosus的一种新型AA14溶性多糖胺单氧化酶 (LPMO),TrAA14A,表现出广泛的细胞分解和半细胞分解活性. 这种双功能酶增强了纤维素水解,为纤维素纤维素分解提供了新的可能性.

科学领域:

生物化学生物化学
酶学是一种酶学.
菌生物技术是一种真菌生物技术.

背景情况:

性多糖体单氧化酶 (LPMOs) 对于生物质降解至关重要.
AA14 LPMOs,特别是来自Pycnoporus coccineus (PcAA14A和B) 的LPMOs,表现出不寻常的西兰降解模式,引发了争议,并需要进一步研究它们的基质特异性和功能.

研究的目的:

为了描述一种来自ascomycete Talaromyces rugulosus的新型AA14 LPMO,命名为TrAA14A.
调查TrAA14A的基质特异性,功能性和结构特征.
探索TrAA14A作为在菌素分解中的双功能酶的潜力.

主要方法:

TrAA14A. 的生物化学表征.
基质特异性测定使用各种多糖化合物 (纤维素,西洛格卢干,西兰).
评估对天然纤维素基质 (如树纸) 的活性.
TrAA14A的结构建模和与其他LPMOs (PcAA14B,NcLPMO9F) 的比较.

主要成果:

TrAA14A表现出广泛的基质特异性,对无形纤维素和树脂葡萄糖具有强烈的活性.
该酶同时氧化了树纸中的纤维素,西兰和西糖,释放了各种寡糖类.
随着性提取基质中的西兰含量增加,TrAA14A的活性下降.
结构建模揭示了一个平坦的活性站点表面,与PcAA14B不同,但与AA9 LPMOs相似,具有独特的静电电位.
当与纤维溶解酶相结合时,TrAA14A显著促进了纤维素水解.

结论:

TrAA14A表现出广泛的纤维分解和半纤维分解活性,使其与之前研究的兰活性AA9和AA14LPMOs区别开来.
这种酶可能起到双功能催化剂的作用,能够降解植物细胞壁中的特定纤维素-半纤维素网络结构.
这些发现为AA14LPMO基质的特异性和功能提供了新的见解,为开发新型双功能LPMOs铺平了道路,以增强商业细胞酶尾酒,以有效地分解纤维素素.

关键词:

辅助活动家族14 辅助活动家族14 纤维素是纤维素的一种.性多糖体单氧化酶的使用.塔拉罗米切斯 (Talaromyces rugulosusus) 是一种的植物.克西兰是什么意思?克西洛格卢干是什么意思?

更多相关视频

Expression of Recombinant Cellulase Cel5A from Trichoderma reesei in Tobacco Plants

Expression of Recombinant Cellulase Cel5A from Trichoderma reesei in Tobacco Plants

Published on: June 13, 2014

Ammonia Fiber Expansion AFEX Pretreatment of Lignocellulosic Biomass

Ammonia Fiber Expansion AFEX Pretreatment of Lignocellulosic Biomass

Published on: April 18, 2020

相关概念视频

Types of Step-Growth Polymers: Polyesters

Types of Step-Growth Polymers: Polyesters

The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the polymer...

Production of Organic Acids

Production of Organic Acids

Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...

Bioplastics

Bioplastics

Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...