Human RAB24, interestingly and predominantly distributed in the nuclei of COS-7 cells, is colocalized with cyclophilin A and GABARAP

Int J Mol Med. 2006 May;17(5):749-54.


As an atypical member of the Rab family, Rab24 has several attributes distinguishing this protein from the other members. Based on the yeast two-hybrid system, interaction between human RAB24 and two proteins, cyclophilin A (CyP-A) and gamma-aminobutyric acid type A receptor-associated protein (GABARAP), was detected and identified in COS-7 cells. Interestingly, RAB24 is predominantly localized in the nuclei of COS-7 cells, which is different from previous reports using other cell lines. RAB24 (D123I) can trigger the accumulation of intracellular inclusions, with small quantities of intranuclear inclusions in some cells. The GTPase activity of RAB24 and its two mutants was detected.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adaptor Proteins, Signal Transducing / genetics
  • Adaptor Proteins, Signal Transducing / metabolism*
  • Animals
  • COS Cells
  • Cell Nucleus / metabolism*
  • Chlorocebus aethiops
  • Cyclophilin A / genetics
  • Cyclophilin A / metabolism*
  • GTP Phosphohydrolases / metabolism
  • Green Fluorescent Proteins / genetics
  • Green Fluorescent Proteins / metabolism
  • Humans
  • Microscopy, Confocal
  • Microtubule-Associated Proteins / genetics
  • Microtubule-Associated Proteins / metabolism*
  • Mutation
  • Plasmids / genetics
  • Protein Binding
  • Transfection
  • Two-Hybrid System Techniques
  • rab GTP-Binding Proteins / genetics
  • rab GTP-Binding Proteins / metabolism*


  • Adaptor Proteins, Signal Transducing
  • GABARAP protein, human
  • Microtubule-Associated Proteins
  • Green Fluorescent Proteins
  • GTP Phosphohydrolases
  • RAB24 protein, human
  • rab GTP-Binding Proteins
  • Cyclophilin A