Identification of the MuRF1 Skeletal Muscle Ubiquitylome Through Quantitative Proteomics.
Identification of the MuRF1 Skeletal Muscle Ubiquitylome Through Quantitative Proteomics.
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DOI:
10.1093/function/zqab029
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发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Bodine SC
中科院分区:
文献类型:
--
作者:
Baehr LM;Hughes DC;Lynch SA;Van Haver D;Maia TM;Marshall AG;Radoshevich L;Impens F;Waddell DS;Bodine SC
MuRF1 (TRIM63) is a muscle-specific E3 ubiquitin ligase and component of the ubiquitin proteasome system. MuRF1 is transcriptionally upregulated under conditions that cause muscle loss, in both rodents and humans, and is a recognized marker of muscle atrophy. In this study, we used in vivo electroporation to determine whether MuRF1 overexpression alone can cause muscle atrophy and, in combination with ubiquitin proteomics, identify the endogenous MuRF1 substrates in skeletal muscle. Overexpression of MuRF1 in adult mice increases ubiquitination of myofibrillar and sarcoplasmic proteins, increases expression of genes associated with neuromuscular junction instability, and causes muscle atrophy. A total of 169 ubiquitination sites on 56 proteins were found to be regulated by MuRF1. MuRF1-mediated ubiquitination targeted both thick and thin filament contractile proteins, as well as, glycolytic enzymes, deubiquitinases, p62, and VCP. These data reveal a potential role for MuRF1 in not only the breakdown of the sarcomere but also the regulation of metabolism and other proteolytic pathways in skeletal muscle.
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DOI:
10.1074/jbc.m116.740308
发表时间:
2016-08-19
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Bullard SA;Seo S;Schilling B;Dyle MC;Dierdorff JM;Ebert SM;DeLau AD;Gibson BW;Adams CM
通讯作者:
Adams CM
影响因子:
3.3
作者:
Baehr, Leslie M.;West, Daniel W. D.;Bodine, Sue C.
通讯作者:
Bodine, Sue C.
影响因子:
5.8
作者:
Henderson CA;Gomez CG;Novak SM;Mi-Mi L;Gregorio CC
通讯作者:
Gregorio CC
DOI:
10.1083/jcb.201110067
发表时间:
2012-08-20
期刊:
The Journal of cell biology
影响因子:
--
作者:
Cohen S;Zhai B;Gygi SP;Goldberg AL
通讯作者:
Goldberg AL
影响因子:
5.5
作者:
Hughes, David C.;Baehr, Leslie M.;Bodine, Sue C.
通讯作者:
Bodine, Sue C.