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  • Title: GEC1, a protein related to GABARAP, interacts with tubulin and GABA(A) receptor.
    Author: Mansuy V, Boireau W, Fraichard A, Schlick JL, Jouvenot M, Delage-Mourroux R.
    Journal: Biochem Biophys Res Commun; 2004 Dec 10; 325(2):639-48. PubMed ID: 15530441.
    Abstract:
    We have previously identified in uterine cells a novel estrogen-regulated gene called gec1. GEC1 presents 87% identity with GABARAP which, so far, was the only protein found to associate with tubulin and GABA(A) receptor. We demonstrated then that GEC1 interacts in vitro with tubulin and GABA(A) receptor, and promotes tubulin assembly and microtubule bundling. Since all polyclonal antibodies failed in discrimination of both proteins GEC1 and GABARAP, a GEC1-GFP fusion protein was used to specifically localize GEC1. GEC1-GFP was distributed over the cytoplasm in perinuclear vesicles with a scattered pattern. Overall, our data show that GEC1 could be a new member of the GABARAP family involved in the transport of GABA(A) receptor.
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