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J Biol Chem. 2013 Jun 7;288(23):16588-97. doi: 10.1074/jbc.M113.455121. Epub 2013 Apr 23.

The von Hippel-Lindau protein pVHL inhibits ribosome biogenesis and protein synthesis.

Author information

1
Key Laboratory of Nutrition and Metabolism, Institute for Nutritional Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, China.

Abstract

pVHL, the product of von Hippel-Lindau (VHL) tumor suppressor gene, functions as the substrate recognition component of an E3-ubiquitin ligase complex that targets hypoxia inducible factor α (HIF-α) for ubiquitination and degradation. Besides HIF-α, pVHL also interacts with other proteins and has multiple functions. Here, we report that pVHL inhibits ribosome biogenesis and protein synthesis. We find that pVHL associates with the 40S ribosomal protein S3 (RPS3) but does not target it for destruction. Rather, the pVHL-RPS3 association interferes with the interaction between RPS3 and RPS2. Expression of pVHL also leads to nuclear retention of pre-40S ribosomal subunits, diminishing polysomes and 18S rRNA levels. We also demonstrate that pVHL suppresses both cap-dependent and cap-independent protein synthesis. Our findings unravel a novel function of pVHL and provide insight into the regulation of ribosome biogenesis by the tumor suppressor pVHL.

KEYWORDS:

Cancer Biology; Protein Synthesis; Ribosome Assembly; Ribosomes; Tumor; pVHL

PMID:
23612971
PMCID:
PMC3675594
DOI:
10.1074/jbc.M113.455121
[Indexed for MEDLINE]
Free PMC Article
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