结构导向的高稳定聚变尿酸氧化酶工程以用纤维素改性电极自组装,用于增强尿酸传感
Xingbao Wang1, Weili Gong1, Yunlong Xue1
1Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), No. 28789, Jingshi East Road, Licheng District, Jinan, Shandong 250103, China.
概括
这项研究设计了一个更稳定的尿酸氧化酶 (UOX) 生物传感器,用于尿酸 (UA) 检测. 酶工程和自组装固定显著提高了传感器的可靠性和工作寿命.
科学领域:
- 生物技术是生物技术.
- 生物传感器是一种生物传感器.
- 酵素工程是什么意思 酵素工程
背景情况:
- 固定尿酸氧化酶 (UOX) 的高稳定性和保存的催化活性对于精确的尿酸 (UA) 传感至关重要.
- 开发强大的生物传感器需要有效的固定化策略和酶工程.
研究的目的:
- 开发一种高度稳定和可靠的电化学UA生物传感器,使用工程UOX的自组装固定.
- 通过计算结构引导酶工程来提高UOX的结构稳定性和性能.
主要方法:
- 将碳水化合物结合模块 (CBM) 合到UOX,用于在纤维素修饰电极上进行自组装固定.
- 采用计算结构引导的酶工程来识别和删除CBM-UOX融合蛋白 (CBM3-Δ10aa-UOX) 中的破坏稳定的残留物.
- 与传统交叉连接方法相比,评估了生物传感器性能,包括线性,稳定性和工作寿命.
主要成果:
- 与C端融合相比,N端CBM3融合 (CBM3-Δ10aa-UOX) 具有更高的结构稳定性.
- 与甲基交联UOX生物传感器相比,设计的生物传感器表现出更高的可靠性,具有更广泛的线性范围 (00.625 mM UA) 和更长的使用寿命 (长达20天).
- 协同固定实验进一步验证了CBM3-Δ10aa-UOX结构的增强稳定性,在34天以上的时间内达到0.875mM UA的线性.
结论:
- 与酶工程相结合的自组装固定是推进生物传感器技术的有效策略.
- 设计的CBM3-Δ10aa-UOX为开发下一代多重体生物传感器提供了强大而稳定的平台.
- 这种方法显著提高了用于尿酸检测的电化学生物传感器的可靠性和寿命.
更多相关视频
10:02Quantitative SERS Detection of Uric Acid via Formation of Precise Plasmonic Nanojunctions within Aggregates of Gold Nanoparticles and Cucurbit[n]uril
Published on: October 3, 2020
3.8K
10:48Electrochemical Preparation of Poly3,4-Ethylenedioxythiophene Layers on Gold Microelectrodes for Uric Acid-Sensing Applications
Published on: July 28, 2021
3.8K
相关概念视频
Potentiometry: Membrane Electrodes
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...
Ion Exchange
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
Microbial Fuel Cells
Microbial fuel cells (MFCs) are bioelectrochemical devices that generate electricity by exploiting the metabolic processes of electrogenic bacteria. These systems provide a renewable energy source and serve as an innovative method for treating organic waste, such as wastewater.A typical MFC consists of two chambers: an anoxic (oxygen-free) compartment that houses the bacteria and an oxic (oxygen-rich) compartment that contains oxygen as the terminal electron acceptor. Many MFCs use proton...
