Acetylation stabilises calmodulin-regulated calcium signalling.

Acetylation stabilises calmodulin-regulated calcium signalling.
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DOI:
10.1002/1873-3468.14304
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发表时间:
2022-03
期刊:
影响因子:
3.5
通讯作者:
Mulvihill, Daniel P.
Mulvihill, Daniel P.
中科院分区:
生物学3区
文献类型:
--
作者:
Baker, Karen;Geeves, Michael A.;Mulvihill, Daniel P.

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Calmodulin is a conserved calcium signalling protein that regulates a wide range of cellular functions. Amino‐terminal acetylation is a ubiquitous post‐translational modification that affects the majority of human proteins, to stabilise structure, as well as regulate function and proteolytic degradation. Here, we present data on the impact of amino‐terminal acetylation upon structure and calcium signalling function of fission yeast calmodulin. We show that NatA‐dependent acetylation stabilises the helical structure of the Schizosaccharomyces pombe calmodulin, impacting its ability to associate with myosin at endocytic foci. We go on to show that this conserved modification impacts both the calcium‐binding capacity of yeast and human calmodulins. These findings have significant implications for research undertaken into this highly conserved essential protein. This study reveals that amino‐terminal acetylation of calmodulin is necessary for this essential eukaryotic calcium signalling protein to fold and function correctly. We show this conserved modification impacts the calcium‐binding capacity of yeast and human calmodulins. These findings have significant implications for research undertaken into this highly conserved essential protein.
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