新型基菌性酒精氧化酶来自Cerrena unicolor-特征,动力学和蛋白质分解性修饰
Sylwia Stefanek1, Rafał Typek2, Michał Dybowski2
1Department of Biochemistry and Biotechnology, Institute of Biological Sciences, Maria Curie-Skłodowska University, Akademicka 19 St., 20-033 Lublin, Poland.
International journal of molecular sciences
|November 27, 2024
概括
这项研究从Cerrena unicolor真菌中分离和鉴定了酒精氧化酶 (AOX). 素治疗令人惊地增强了AOX活性,为酶应用提供了潜力.
科学领域:
- 生物化学 生化学
- 酶学 是一种酶学.
- 菌类学 菌类学是指菌类学.
背景情况:
- 酒精氧化酶 (AOX) 是真菌代谢中的重要酶.
- 白色腐烂真菌,如Cerrena unicolor,是众所周知的各种氧化酶的生产者.
- 了解AOX特性对于生物技术应用至关重要.
研究的目的:
- 从Cerrena unicolor中分离和表征细胞内酒精氧化酶 (AOX).
- 为了确定纯化AOX的基质特异性和动力参数.
- 研究蛋白酶对AOX活性和稳定性的影响.
主要方法:
- 使用染色学分离和半净化细胞内酒精氧化酶.
- 通过LC-MS/MS,MW和PI的确定来识别和表征酶.
- 用各种酒精基质和蛋白酶处理进行酶动力学分析.
主要成果:
- 获得了半净化AOX (72kDa,PI6.18),活动恢复率为30%.
- AOX显示了芳香醇的强烈氧化,特别是4-基醇.
- 素治疗显著增强了高达123%的AOX活性,而其他蛋白酶则减少了它.
结论:
- 单色含有细胞内酒精氧化酶,对芳香醇具有显著的活性.
- 该酶的活性由素独特调节,这表明了酶工程的潜力.
- 这项研究提供了关于C. unicolor的AOX的见解,这与生物催化剂和酶技术有关.
相关概念视频
Oxidation of Alcohols
12.8K
In this lesson, the oxidation of alcohols is discussed in depth. The various reagents used for oxidation of primary and secondary alcohols are detailed, and their mechanism of action is provided.
The process of oxidation in a chemical reaction is observed in any of the three forms:
The process of oxidation in a chemical reaction is observed in any of the three forms:
12.8K
Radical Oxidation of Allylic and Benzylic Alcohols
1.9K
Activated manganese(IV) oxide can selectively oxidize allylic and benzylic alcohols via a radical intermediate mechanism. Primary allylic alcohols are oxidized to aldehydes, while secondary allylic alcohols yield ketones. The redox reaction of potassium permanganate with an Mn(II) salt such as manganese sulfate (under either alkaline or acidic conditions), followed by thorough drying, yields the oxidizing agent: activated MnO2. While MnO2 is insoluble in the solvents used for the reaction, the...
1.9K
Preparation of Alcohols via Addition Reactions
6.1K
Overview
The acid-catalyzed addition of water to the double bond of alkenes is a large-scale industrial method used to synthesize low-molecular-weight alcohols. An acidic atmosphere is required to allow the hydrogen in the water molecule to act as an electrophile and attack the double bond in an alkene. The addition of a proton to the double bond creates a carbocation intermediate. The proton preferentially bonds to the less substituted end of the double bond to create a more stable carbocation...
The acid-catalyzed addition of water to the double bond of alkenes is a large-scale industrial method used to synthesize low-molecular-weight alcohols. An acidic atmosphere is required to allow the hydrogen in the water molecule to act as an electrophile and attack the double bond in an alkene. The addition of a proton to the double bond creates a carbocation intermediate. The proton preferentially bonds to the less substituted end of the double bond to create a more stable carbocation...
6.1K
Preparation of Aldehydes and Ketones from Alcohols, Alkenes, and Alkynes
3.5K
Aldehydes and ketones are prepared from alcohols, alkenes, and alkynes via different reaction pathways. Alcohols are the most commonly used substrates for synthesizing aldehydes and ketones. The conversion of alcohol to aldehyde, which involves the oxidation process, depends on the class of the alcohol used and the strength of the oxidizing agent. For instance, primary alcohol will form an aldehyde when treated with a weak oxidizing agent; however, it gets over-oxidized to a carboxylic acid in...
3.5K
Oxidative Cleavage of Alkenes: Ozonolysis
9.9K
In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
9.9K
Base-Catalyzed Aldol Addition Reaction
3.2K
As depicted in Figure 1, base-catalyzed aldol addition involves adding two carbonyl compounds in aqueous sodium hydroxide to form a β-hydroxy carbonyl compound.
3.2K


