Modulation of Clock Gene Expression by the Transcriptional Coregulator Receptor Interacting Protein 140 (RIP140)

Jun 2, 2011Journal of biological rhythms

How the protein RIP140 affects the activity of genes that control the body’s internal clock

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Abstract

RIP140 mRNA and protein levels are regulated by circadian rhythms.

  • RIP140 may modulate the expression of clock genes, indicating its potential role in the circadian clock.
  • The absence of RIP140 is associated with disrupted basal levels of BMAL1 and other clock genes.
  • Loss of RIP140 reduces the amplitude of oscillations in clock gene expression.
  • RIP140 is recruited to specific sites on the BMAL1 promoter and interacts with RORα.
  • This interaction suggests that RIP140 increases transcription of BMAL1 in a manner dependent on RORα.

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