Functional coupling of chromogranin with the inositol 1,4,5-trisphosphate receptor shapes calcium signaling.
AuthorsChoe CU, Harrison KD, Grant W, Ehrlich BE,
JournalJ Biol Chem
PubMed ID15194698
Chromogranins A and B are high capacity, low affinity calcium (Ca(2+)) storage proteins that bind to the inositol 1,4,5-trisphosphate-gated receptor (InsP(3) R). Although most commonly associated with secretory granules of neuroendocrine cells, chromogranins have also been found in the lumen of the endoplasmic reticulum (ER) of many cell types. To ... More
Mitochondrial Localization of Mutant Superoxide Dismutase 1 Triggers Caspase-dependent Cell Death in a Cellular Model of Familial Amyotrophic Lateral Sclerosis.
The mutations in superoxide dismutase 1 (SOD1) cause approximately 20% of familial amyotrophic lateral sclerosis cases. A toxic gain of function has been considered to be the cause of the disease, but its molecular mechanism remains uncertain. To determine whether the subcellular localization of mutant SOD1 is crucial to mutant ... More