准备无细胞系统的协议
B G Pavana1, G Sowmiya1, Sai Ramesh1
1Department of Bio-Engineering, School of Engineering, Vels Institute of Science, Technology, and Advanced Studies (VISTAS), Chennai, India.
Progress in molecular biology and translational science
|January 25, 2026
概括
无细胞蛋白合成 (CFPS) 提供了一种多功能方法,可以在没有细胞约束的情况下快速生产蛋白质. 本章详细介绍了优化CFPS,评估蛋白质表达和解决各种应用程序常见问题的协议.
科学领域:
- 生物技术是生物技术.
- 分子生物学分子生物学
- 合成生物学 合成生物学
背景情况:
- 无细胞蛋白合成 (CFPS) 为传统的基于细胞的方法提供了强大的替代方案,克服了生物系统的局限性.
- CFPS能够快速,模块化地生产蛋白质,并有可能产生新型,有毒或不稳定的蛋白质.
研究的目的:
- 为无细胞蛋白合成 (CFPS) 提供全面的协议.
- 详细介绍优化蛋白质表达,表征产量和评估蛋白质功能的方法.
- 讨论CFPS的共同挑战和故障排除策略.
主要方法:
- 准备活性细胞提取物的详细方案,包括宿主菌株选择,机械溶解和澄清.
- 对反应系统的优化策略,重点关注能量和离子平衡.
- 分析技术,如SDS-PAGE,西部污染和光测试,用于产量和功能评估.
主要成果:
- 建立了高活性细胞提取物制备和优化蛋白质表达的协议.
- 评估了多种分析方法,以准确评估蛋白质产量和功能.
- 在CFPS中确定了常见的瓶,包括mRNA降解,蛋白质错折和污染,以及故障排除指南.
结论:
- CFPS是生产多种蛋白质的灵活平台,在合成生物学,诊断和生物制造中扩大了应用.
- 未来与机器学习和冷式格式的集成有望为医疗保健和工业提供可扩展,可部署的CFPS系统.
- 这项工作既是CFPS研究和开发的实用协议,也是CFPS研究和开发的前性模型.
相关概念视频
01:29Preparation of Amides
4.0K
Amides are synthesized by treating carboxylic acids with amines in the presence of dehydrating agents like dicyclohexylcarbodiimide (DCC).
The DCC-promoted synthesis of amides begins with the protonation of DCC by carboxylic acid. The protonation makes it a better acceptor. Next, the addition of carboxylate to the protonated carbodiimide gives a reactive acylating agent.
Subsequently, the amine acts as a nucleophile that attacks the acylating agent to form a tetrahedral intermediate. In the...
The DCC-promoted synthesis of amides begins with the protonation of DCC by carboxylic acid. The protonation makes it a better acceptor. Next, the addition of carboxylate to the protonated carbodiimide gives a reactive acylating agent.
Subsequently, the amine acts as a nucleophile that attacks the acylating agent to form a tetrahedral intermediate. In the...
4.0K
01:12Preparation of Nitriles
2.7K
One of the common methods to prepare nitriles is the dehydration of amides. This method requires strong dehydrating agents like phosphorous pentoxide or boiling acetic anhydride for converting amides to nitriles. Another reagent namely, thionyl chloride also accomplishes the dehydration of amides, where amide acts as a nucleophile. The first step of the mechanism involves the nucleophilic attack by the amide on the thionyl chloride to form an intermediate. In the next step, the electron pairs...
2.7K
03:00Preparation of Epoxides
9.2K
Overview
Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin cyclization.
Epoxidation with Peroxy Acids
Epoxidation of alkenes via oxidation with peroxy acids involves the conversion of a carbon–carbon double bond to an epoxide using the oxidizing agent meta-chloroperoxybenzoic acid, commonly known as MCPBA. Since the O–O bond of peroxy acids is very weak, the addition of electrophilic oxygen of peroxy acids to...
Epoxides result from alkene oxidation, which can be achieved by a) air, b) peroxy acids, c) hypochlorous acids, and d) halohydrin cyclization.
Epoxidation with Peroxy Acids
Epoxidation of alkenes via oxidation with peroxy acids involves the conversion of a carbon–carbon double bond to an epoxide using the oxidizing agent meta-chloroperoxybenzoic acid, commonly known as MCPBA. Since the O–O bond of peroxy acids is very weak, the addition of electrophilic oxygen of peroxy acids to...
9.2K
01:07Preparation of Acid Anhydrides
4.0K
One of the methods for preparing symmetrical or unsymmetrical acid anhydrides involves the treatment of acid chlorides with the sodium salt of carboxylic acids. The reaction proceeds via a nucleophilic acyl substitution.
The carboxylate ion acts as a nucleophile that attacks the carbonyl carbon of the acid chloride to form a tetrahedral intermediate. Subsequently, the re-formation of the carbonyl group with the loss of the chloride ion as a leaving group leads to the formation of an acid...
The carboxylate ion acts as a nucleophile that attacks the carbonyl carbon of the acid chloride to form a tetrahedral intermediate. Subsequently, the re-formation of the carbonyl group with the loss of the chloride ion as a leaving group leads to the formation of an acid...
4.0K
02:33Preparation and Reactions of Thiols
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Thiols are prepared using the hydrosulfide anion as a nucleophile in a nucleophilic substitution reaction with alkyl halides. For instance, bromobutane reacts with sodium hydrosulfide to give butanethiol.
7.5K
02:34Preparation of Alkynes: Dehydrohalogenation
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Introduction
Alkynes can be prepared by dehydrohalogenation of vicinal or geminal dihalides in the presence of a strong base like sodium amide in liquid ammonia. The reaction proceeds with the loss of two equivalents of hydrogen halide (HX) via two successive E2 elimination reactions.
Alkynes can be prepared by dehydrohalogenation of vicinal or geminal dihalides in the presence of a strong base like sodium amide in liquid ammonia. The reaction proceeds with the loss of two equivalents of hydrogen halide (HX) via two successive E2 elimination reactions.
18.1K