影响转-3-甲基甲基合酶A对非酶性蛋白质化作用的因素
Elizabeth A Jennings1, Megan M Macdonald1, Irina Romenskaia1
1Department of Biochemistry and Molecular Biology, University of Nevada, Reno, NV 89557, USA.
转-3-甲基甲基 (3MGC) CoA是一种不稳定的代谢物,可以导致蛋白质3MGCylation. 酶AUH通过给3MGC CoA提供水分来防止这种异常反应,从而防止疾病.
科学领域:
- 生物化学 生化学
- 代谢学 代谢学 代谢学
- 代谢中的先天性错误
背景情况:
- 氨酸的代谢产生了转-3-甲基谷 (3MGC) CoA,这是3MGC酸的前体.
- 3MGC CoA是不稳定的,可以非酶地形成3MGC酸或修改蛋白质 (3MGCylation).
- 蛋白3MGCylation与特定的代谢天生的错误 (IEM) 有关.
研究的目的:
- 为了研究3MGC CoA对蛋白质3MGCylation的敏感性.
- 确定3 - 基-3 - 甲基利 (HMG) CoA溶酶和AUH在减轻3MGC CoA反应性的作用.
主要方法:
- 再组合的3-甲基克罗托尼尔CoA碳酸酶 (3MCCCase) 产生了3MGC CoA.
- 用牛血清白蛋白 (BSA) 化3MGC CoA,然后进行免疫斑块分析.
- 在化过程中包括3MGC CoA 酸酶 (AUH).
- 在肝脏特异性HMG CoA溶酶淘汰小鼠中的研究.
主要成果:
- 3MGC CoA的温度升高和化时间与3MGC基化BSA的较高水平相关.
- AUH显著降低了3MGCylated BSA的水平.
- 在HMG CoA溶酶淘汰赛小鼠体内观察到3MGCylation蛋白质的证据.
结论:
- 转-3MGC CoA是一种反应性和潜在的有毒代谢物.
- 通过AUH介导的3MGC CoA到HMG CoA的水化是一种防止异常反应的保护机制.
- 了解3MGC CoA的反应性对于IEM研究至关重要.
更多相关视频
12:07Sequence-specific Labeling of Nucleic Acids and Proteins with Methyltransferases and Cofactor Analogues
Published on: November 22, 2014
07:27Optimized Incorporation of Alkynyl Fatty Acid Analogs for the Detection of Fatty Acylated Proteins using Click Chemistry
Published on: April 9, 2021
相关概念视频
Phase II Reactions: Acetylation Reactions
The substrates for acetylation are typically drugs or their metabolites with an amino, sulfonamide, or hydrazine functional group. Acetylation can occur at several points in the drug molecule, including primary, secondary, and...
Covalently Linked Protein Regulators
These groups modify specific amino acids in a protein....
Phase II Reactions: Glutathione Conjugation and Mercapturic Acid Formation
Several distinctive characteristics distinguish glutathione conjugation from other phase II...
Phase II Reactions: Sulfation and Conjugation with α-Amino Acids
Amines to Amides: Acylation of Amines
Next, the second equivalent of amine serves as a Brønsted base and deprotonates the quaternary...
tRNA Activation
