Modest effects of lipid modifications on the structure of caveolin-3.

Modest effects of lipid modifications on the structure of caveolin-3.
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DOI:
10.1021/bi5005238
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发表时间:
2014-07-15
期刊:
影响因子:
2.9
通讯作者:
Sanders CR
Sanders CR
中科院分区:
生物学3区
文献类型:
--
作者:
Kim JH;Peng D;Schlebach JP;Hadziselimovic A;Sanders CR

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小窝蛋白3(Caveolin-3,Caveolin-3)是一种非传统的膜蛋白,在小窝中作为关键的支架枢纽,与多种肌肉疾病有基因联系。在这项工作中,我们报道了全长人Cav3的表达、纯化和鉴定。为了模拟内源性Cav3的棕榈酰化,我们开发了一种普遍适用的方法,在天然修饰的半胱氨酸残基上共价连接硫代烷基链。核磁共振测量表明,脂肪基化对Cav3结构的影响不大,对N-末端结构域、支架结构域和极端C-末端的结构影响不大。
Caveolin-3 (Cav3) is an unconventional membrane protein that serves as a critical scaffolding hub in caveolae and is genetically linked to various muscle disorders. In this work, we report the expression, purification, and characterization of full-length human Cav3. To mimic the palmitoylation of endogenous Cav3, we developed a generally applicable approach to covalently attached thioalkyl chains at natively modified cysteine residues. Nuclear magnetic resonance measurements indicate that lipidation exerts only a modest and local effect on the Cav3 structure, with little impact on the structures of the N-terminal domain, the scaffolding domain, and the extreme C-terminus.
DOI: 10.1083/jcb.201008160
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期刊: The Journal of cell biology
影响因子: --
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