Reference: Steuve S, et al. (2006) Rhophilin-2 is targeted to late-endosomal structures of the vesicular machinery in the presence of activated RhoB. Exp Cell Res 312(20):3981-9

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Abstract


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.

Reference Type
Journal Article | Research Support, Non-U.S. Gov't
Authors
Steuve S, Devosse T, Lauwers E, Vanderwinden JM, André B, Courtoy PJ, Pirson I
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