Carnitine/acylcarnitine translocase and carnitine palmitoyltransferase 2 form a complex in the inner mitochondrial membrane

Mol Cell Biochem. 2014 Sep;394(1-2):307-14. doi: 10.1007/s11010-014-2098-z. Epub 2014 Jun 5.

Abstract

Carnitine/acylcarnitine translocase and carnitine palmitoyltransferase 2 are members of the carnitine system, which are responsible of the regulation of the mitochondrial CoA/acyl-CoA ratio and of supplying substrates for the ß-oxidation to mitochondria. This study, using cross-Linking reagent, Blue native electrophoresis and immunoprecipitation followed by detection with immunoblotting, shows conclusive evidence about the interaction between carnitine palmitoyltransferase 2 and carnitine/acylcarnitine translocase supporting the channeling of acylcarnitines and carnitine at level of the inner mitochondrial membrane.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Blotting, Western
  • Carnitine / analogs & derivatives
  • Carnitine / metabolism
  • Carnitine Acyltransferases / metabolism*
  • Carnitine O-Palmitoyltransferase / chemistry
  • Carnitine O-Palmitoyltransferase / metabolism*
  • Cross-Linking Reagents / chemistry
  • Formaldehyde / chemistry
  • Immunoprecipitation
  • Membrane Transport Proteins / chemistry
  • Membrane Transport Proteins / metabolism*
  • Mitochondria, Liver / enzymology*
  • Mitochondrial Membranes / enzymology*
  • Models, Molecular
  • Native Polyacrylamide Gel Electrophoresis
  • Protein Binding
  • Protein Conformation
  • Rats

Substances

  • Cross-Linking Reagents
  • Membrane Transport Proteins
  • acylcarnitine
  • Formaldehyde
  • Carnitine Acyltransferases
  • Slc25a20 protein, rat
  • Carnitine O-Palmitoyltransferase
  • Carnitine