Non-optimal codon usage affects expression, structure and function of clock protein FRQ

Mian Zhou, Jinhu Guo, Joonseok Cha, Michael Chae, She Chen, Jose M. Barral, Matthew S. Sachs, Yi Liu

Research output: Contribution to journalArticle

180 Citations (Scopus)

Abstract

Codon-usage bias has been observed in almost all genomes and is thought to result from selection for efficient and accurate translation of highly expressed genes. Codon usage is also implicated in the control of transcription, splicing and RNA structure. Many genes exhibit little codon-usage bias, which is thought to reflect a lack of selection for messenger RNA translation. Alternatively, however, non-optimal codon usage may be of biological importance. The rhythmic expression and the proper function of the Neurospora FREQUENCY (FRQ) protein are essential for circadian clock function. Here we show that, unlike most genes in Neurospora, frq exhibits non-optimal codon usage across its entire open reading frame. Optimization of frq codon usage abolishes both overt and molecular circadian rhythms. Codon optimization not only increases FRQ levels but, unexpectedly, also results in conformational changes in FRQ protein, altered FRQ phosphorylation profile and stability, and impaired functions in the circadian feedback loops. These results indicate that non-optimal codon usage of frq is essential for its circadian clock function. Our study provides an example of how non-optimal codon usage functions to regulate protein expression and to achieve optimal protein structure and function.

Original languageEnglish (US)
Pages (from-to)111-115
Number of pages5
JournalNature
Volume494
Issue number7439
DOIs
StatePublished - Mar 7 2013

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Codon
Proteins
Neurospora
Circadian Clocks
Genes
RNA Splicing
Circadian Rhythm
Open Reading Frames
Phosphorylation
Genome
Messenger RNA

ASJC Scopus subject areas

  • General

Cite this

Zhou, M., Guo, J., Cha, J., Chae, M., Chen, S., Barral, J. M., ... Liu, Y. (2013). Non-optimal codon usage affects expression, structure and function of clock protein FRQ. Nature, 494(7439), 111-115. https://doi.org/10.1038/nature11833

Non-optimal codon usage affects expression, structure and function of clock protein FRQ. / Zhou, Mian; Guo, Jinhu; Cha, Joonseok; Chae, Michael; Chen, She; Barral, Jose M.; Sachs, Matthew S.; Liu, Yi.

In: Nature, Vol. 494, No. 7439, 07.03.2013, p. 111-115.

Research output: Contribution to journalArticle

Zhou, M, Guo, J, Cha, J, Chae, M, Chen, S, Barral, JM, Sachs, MS & Liu, Y 2013, 'Non-optimal codon usage affects expression, structure and function of clock protein FRQ', Nature, vol. 494, no. 7439, pp. 111-115. https://doi.org/10.1038/nature11833
Zhou M, Guo J, Cha J, Chae M, Chen S, Barral JM et al. Non-optimal codon usage affects expression, structure and function of clock protein FRQ. Nature. 2013 Mar 7;494(7439):111-115. https://doi.org/10.1038/nature11833
Zhou, Mian ; Guo, Jinhu ; Cha, Joonseok ; Chae, Michael ; Chen, She ; Barral, Jose M. ; Sachs, Matthew S. ; Liu, Yi. / Non-optimal codon usage affects expression, structure and function of clock protein FRQ. In: Nature. 2013 ; Vol. 494, No. 7439. pp. 111-115.
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