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人类的V-ATPase功能受到TLDc蛋白质的积极和消极调节

Rebecca A Oot¹, Stephan Wilkens¹

¹Department of Biochemistry & Molecular Biology, SUNY Upstate Medical University, Syracuse, NY 13210, USA.

Structure (London, England : 1993)

|April 9, 2024

概括

人类TLDc蛋白质影响真空ATPase (V-ATPase) 活性. 一些通过导致分解来抑制V-ATPase,而另一个则激活它,揭示了V-ATPase调节和TLDc蛋白功能的新见解.

科学领域:

生物化学生物化学
分子生物学分子生物学
细胞生物学细胞生物学

背景情况:

具有保存TLDc域的蛋白质对于细胞对氧化应激的保护至关重要,并且与神经健康和疾病有关.
对于TLDc蛋白的功能,其确切的机制在很大程度上是未知的.
以前的研究表明,酵母Oxr1p通过促进其分解来抑制真空ATPase (V-ATPase).

研究的目的:

研究五种人类TLDc蛋白 (TLDC2,NCOA7,OXR1,TBC1D24和mEAK7) 对人类V-ATPase活性的直接影响.
阐明TLDc蛋白在哺乳动物V-ATPase功能调节中的作用.

主要方法:

在不同人类TLDc蛋白质的存在下测试纯化人类V-ATPase的活性.
使用生物化学技术分析TLDc蛋白对V-ATPase组装和拆卸的影响.
将TLDc蛋白与V-ATPase相互作用的功能结果进行比较.

主要成果:

发现TLDC2,TBC1D24和OXR1和NCOA7的TLDC域通过诱导酶分解来抑制人类V-ATPase活性.
相反,mEAK7被确定为人类V-ATPase活性的激活剂.
这些发现表明,各种人类TLDc蛋白对V-ATPase的调节差异.

结论:

哺乳动物TLDc蛋白对V-ATPase活性表现出多种不同的调节作用,包括抑制和激活.
这项研究为TLDc蛋白家族对V-ATPase调节的机制提供了新的见解.
了解这些相互作用对于阐明TLDc蛋白在神经健康和疾病中的作用至关重要.

关键词:

没有NCOA7A7 一个OXR1一个OXR1 TBC1D2424 在线观看这是一个TLDC2TLDC2.TLDc 域名域名在V(1)-ATPase中.V(o) 质子通道的质子通道这是一个V-ATPase.mEAK7 在线播放可逆拆卸的拆卸方式

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