The peroxisomal protein import machinery

FEBS Lett. 2007 Jun 19;581(15):2811-9. doi: 10.1016/j.febslet.2007.04.001. Epub 2007 Apr 9.


Peroxisomes are unique organelles whose physiological functions vary depending on the cellular environment or metabolic and developmental state of the organism. These changes in enzyme content are accomplished by the dynamically operating membrane and matrix protein import machineries of peroxisomes that rely on the concerted function of at least 20 peroxins. The import of folded matrix proteins is mediated by cycling receptors that shuttle between the cytosol and peroxisomal lumen. Receptor release back to the cytosol represents the ATP-dependent step of peroxisomal matrix protein import, which consists of two energy-consuming reactions: receptor ubiquitination and dislocation.

Publication types

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

MeSH terms

  • Adenosine Triphosphate / metabolism
  • Membrane Proteins / chemistry
  • Membrane Proteins / metabolism
  • Models, Biological
  • Models, Molecular
  • Peroxisomes / metabolism*
  • Protein Folding
  • Protein Transport / physiology*
  • Receptors, Cytoplasmic and Nuclear / chemistry
  • Receptors, Cytoplasmic and Nuclear / metabolism
  • Ubiquitin / metabolism


  • Membrane Proteins
  • Receptors, Cytoplasmic and Nuclear
  • Ubiquitin
  • Adenosine Triphosphate