| First Author | la Cour JM | Year | 2007 |
| Journal | Biochem Biophys Res Commun | Volume | 353 |
| Issue | 4 | Pages | 1063-7 |
| PubMed ID | 17214967 | Mgi Jnum | J:127172 |
| Mgi Id | MGI:3763292 | Doi | 10.1016/j.bbrc.2006.12.143 |
| Citation | la Cour JM, et al. (2007) ALG-2 oscillates in subcellular localization, unitemporally with calcium oscillations. Biochem Biophys Res Commun 353(4):1063-7 |
| abstractText | A variety of stimuli can trigger intracellular calcium oscillations. Relatively little is known about the molecular mechanisms decoding these events. We show that ALG-2, a Ca2+-binding protein originally isolated as a protein associated with apoptosis, is directly linked to Ca2+ signalling. We discovered that the subcellular distribution of a tagged version of ALG-2 could be directed by physiological external stimuli (including ATP, EGF, prostaglandin, histamine), which provoke intracellular Ca2+ oscillations. Cellular stimulation led to a redistribution of ALG-2 from the cytosol to a punctate localization in an oscillatory fashion unitemporally with Ca2+ oscillations, whereas a Ca2+-binding deficient mutant of ALG-2 did not redistribute. Using tagged ALG-2 as bait we identified its novel target protein Sec31A and based on the partial colocalization of endogenous ALG-2 and Sec31A we propose that ALG-2 temporarily binds to the COPII vesicles providing a link between Ca2+ signalling and ER to Golgi trafficking. |
