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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 

Rhophilin-2 is targeted to late-endosomal structures of the vesicular machinery in the presence of activated RhoB.

Rhophilin-2 or p76(RBE), a protein whose expression is induced by the cyclic AMP pathway in thyrocytes, contains several protein-protein interaction domains including HR-1, Bro1 and PDZ domains, and is a partner of RhoB in its GTP-bound form (Eur J Biochem, 269(24): 6241-9, 2002). We here define its subcellular localization and dissect the significance of its domains. By subcellular fractionation and colocalization experiments, rhophilin-2 is recruited to subcellular organelles by activated RhoB-GTP. As for its yeast homologue, Npi3/Bro1p, the Bro1 domain of rhophilin-2 is necessary to its recruitment to the vesicular structures, which are not labeled for EEA1 nor Lamp1, but well with the late endosome marker CD63.[1]

References

  1. Rhophilin-2 is targeted to late-endosomal structures of the vesicular machinery in the presence of activated RhoB. Steuve, S., Devosse, T., Lauwers, E., Vanderwinden, J.M., Andr??, B., Courtoy, P.J., Pirson, I. Exp. Cell Res. (2006) [Pubmed]
 
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