Solution structure of the natively assembled yeast ribosomal stalk determined by small-angle X-ray scattering

Biochem J. 2012 Jun 1;444(2):205-9. doi: 10.1042/BJ20120115.

Abstract

The ribosomal stalk of the 60S subunit has been shown to play a crucial role in all steps of protein synthesis, but its structure and exact molecular function remain an unanswered question. In the present study, we show the low-resolution models of the solution structure of the yeast ribosomal stalk, composed of five proteins, P0-(P1-P2)(2). The model of the pentameric stalk complex determined by small-angle X-ray scattering reveals an elongated shape with a maximum length of 13 nm. The model displays three distinct lobes, which may correspond to the individual P1-P2 heterodimers anchored to the C-terminal domain of the P0 protein.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Protein Binding / physiology
  • Protein Multimerization
  • Protein Structure, Tertiary
  • Ribosomal Proteins / chemistry*
  • Saccharomyces cerevisiae / chemistry
  • Saccharomyces cerevisiae Proteins / chemistry*
  • Scattering, Small Angle*
  • X-Ray Diffraction* / methods

Substances

  • RPP0 protein, S cerevisiae
  • Ribosomal Proteins
  • Saccharomyces cerevisiae Proteins
  • ribosomal protein P0