RRC ID 45892
著者 Yang F, Gao Y, Li Z, Chen L, Xia Z, Xu T, Qin Y.
タイトル Mitochondrial EF4 links respiratory dysfunction and cytoplasmic translation in Caenorhabditis elegans.
ジャーナル Biochim Biophys Acta
Abstract How animals coordinate cellular bioenergetics in response to stress conditions is an essential question related to aging, obesity and cancer. Elongation factor 4 (EF4/LEPA) is a highly conserved protein that promotes protein synthesis under stress conditions, whereas its function in metazoans remains unknown. Here, we show that, in Caenorhabditis elegans, the mitochondria-localized CeEF4 (referred to as mtEF4) affects mitochondrial functions, especially at low temperature (15°C). At worms' optimum growing temperature (20°C), mtef4 deletion leads to self-brood size reduction, growth delay and mitochondrial dysfunction. Transcriptomic analyses show that mtef4 deletion induces retrograde pathways, including mitochondrial biogenesis and cytoplasmic translation reorganization. At low temperature (15°C), mtef4 deletion reduces mitochondrial translation and disrupts the assembly of respiratory chain supercomplexes containing complex IV. These observations are indicative of the important roles of mtEF4 in mitochondrial functions and adaptation to stressful conditions.
巻・号 1837(10)
ページ 1674-83
公開日 2014-10-1
DOI 10.1016/j.bbabio.2014.05.353
PII S0005-2728(14)00499-X
PMID 24837196
MeSH Animals Base Sequence Caenorhabditis elegans / metabolism* Caenorhabditis elegans / physiology Caenorhabditis elegans Proteins / genetics Caenorhabditis elegans Proteins / metabolism* Cytoplasm / metabolism* DNA Primers Electron Transport* Mitochondria / metabolism* Mitochondrial Proteins / genetics Mitochondrial Proteins / metabolism* Polymerase Chain Reaction Sequence Analysis, RNA Temperature
IF 3.411
引用数 12
WOS 分野 BIOPHYSICS BIOCHEMISTRY & MOLECULAR BIOLOGY
リソース情報
線虫 tm4178