The ticking tail: daily oscillations in mRNA poly(A) tail length drive circadian cycles in protein synthesis.

نویسندگان

  • Ivana Gotic
  • Ueli Schibler
چکیده

In this issue of Genes & Development, Kojima and colleagues (pp. 2724-2736) examined the impact of mRNA poly(A) tail length on circadian gene expression. Their study demonstrates how dynamic changes in transcript poly(A) tail length can lead to rhythmic protein expression, irrespective of whether mRNA accumulation is circadian or constitutive.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Circadian control of mRNA polyadenylation dynamics regulates rhythmic protein expression.

Poly(A) tails are 3' modifications of eukaryotic mRNAs that are important in the control of translation and mRNA stability. We identified hundreds of mouse liver mRNAs that exhibit robust circadian rhythms in the length of their poly(A) tails. Approximately 80% of these are primarily the result of nuclear adenylation coupled with rhythmic transcription. However, unique decay kinetics distinguis...

متن کامل

Purification of Saccharomyces cerevisiae eIF4E/eIF4G/Pab1p Complex with Capped mRNA

Protein synthesis is one of the most complex cellular processes, involving numerous translation components that interact in multiple sequential steps. The most complex stage in protein synthesis is the initiation process. The basal set of factors required for translation initiation has been determined, and biochemical, genetic, and structural studies are now beginning to reveal details of their...

متن کامل

Circadian Post-transcriptional Control of Metabolism

Circadian clocks control thousands of genes, which ultimately generate rhythms in signaling pathways, metabolism, tissue physiology and behavior. Although rhythmic transcription plays a critical role in generating these rhythmic gene expression patterns, recent evidence has shown that post-transcriptional mechanisms are also important. Here we describe studies showing that regulation of mRNA po...

متن کامل

Changes in poly(A) tail length dynamics from the loss of the circadian deadenylase Nocturnin.

mRNA poly(A) tails are important for mRNA stability and translation, and enzymes that regulate the poly(A) tail length significantly impact protein profiles. There are eleven putative deadenylases in mammals, and it is thought that each targets specific transcripts, although this has not been clearly demonstrated. Nocturnin (NOC) is a unique deadenylase with robustly rhythmic expression and los...

متن کامل

PDE12 removes mitochondrial RNA poly(A) tails and controls translation in human mitochondria

Polyadenylation of mRNA in human mitochondria is crucial for gene expression and perturbation of poly(A) tail length has been linked to a human neurodegenerative disease. Here we show that 2'-phosphodiesterase (2'-PDE), (hereafter PDE12), is a mitochondrial protein that specifically removes poly(A) extensions from mitochondrial mRNAs both in vitro and in mitochondria of cultured cells. In eukar...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Genes & development

دوره 26 24  شماره 

صفحات  -

تاریخ انتشار 2012