ALKBH4-dependent demethylation of actin regulates actomyosin dynamics.
ALKBH4-dependent demethylation of actin regulates actomyosin dynamics.
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ALKBH4 依赖性肌动蛋白去甲基化调节肌动球蛋白动力学
DOI:
10.1038/ncomms2863
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发表时间:
2013
影响因子:
16.6
通讯作者:
中科院分区:
文献类型:
--
作者:
Regulation of actomyosin dynamics by post-transcriptional modifications in cytoplasmic actin is still poorly understood. Here we demonstrate that dioxygenase ALKBH4-mediated demethylation of a monomethylated site in actin (K84me1) regulates actin–myosin interaction and actomyosin-dependent processes such as cytokinesis and cell migration. ALKBH4-deficient cells display elevated K84me1 levels. Non-muscle myosin II only interacts with unmethylated actin and its proper recruitment to and interaction with actin depend on ALKBH4. ALKBH4 co-localizes with the actomyosin-based contractile ring and midbody via association with methylated actin. ALKBH4-mediated regulation of actomyosin dynamics is completely dependent on its catalytic activity. Disorganization of cleavage furrow components and multinucleation associated with ALKBH4 deficiency can all be restored by reconstitution with wild-type but not catalytically inactive ALKBH4. Similar to actin and myosin knock-out mice, homozygous Alkbh4 mutant mice display early embryonic lethality. These findings imply that ALKBH4-dependent actin demethylation regulates actomyosin function by promoting actin-non-muscle myosin II interaction. The division of a single eukaryotic cell into two requires actomyosin-dependent contraction. Here the authors show that lysine methylation of actin inhibits contractility during cytokinesis by blocking its association with myosin, and this modification is reversed at the contractile ring by the demethylase ALKBH4.
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影响因子:
3.7
作者:
Lando D;Balmer J;Laue ED;Kouzarides T
通讯作者:
Kouzarides T
影响因子:
4.1
作者:
JOHNSON, P;HARRIS, CI;PERRY, SV
通讯作者:
PERRY, SV
DOI:
10.1083/jcb.111.5.1905
发表时间:
1990-11
期刊:
The Journal of cell biology
影响因子:
--
作者:
Cao LG;Wang YL
通讯作者:
Wang YL
DOI:
10.1126/science.1151710
发表时间:
2007-11-30
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Gerken T;Girard CA;Tung YC;Webby CJ;Saudek V;Hewitson KS;Yeo GS;McDonough MA;Cunliffe S;McNeill LA;Galvanovskis J;Rorsman P;Robins P;Prieur X;Coll AP;Ma M;Jovanovic Z;Farooqi IS;Sedgwick B;Barroso I;Lindahl T;Ponting CP;Ashcroft FM;O'Rahilly S;Schofield CJ
通讯作者:
Schofield CJ
影响因子:
56.9
作者:
Frayling, Timothy M.;Timpson, Nicholas J.;McCarthy, Mark I.
通讯作者:
McCarthy, Mark I.