GRAM marks the spot for STIM. Commentary on "GRAM domain proteins specialize functionally distinct ER-PM contact sites in human cells".

Cell Calcium

Department of Cell Physiology and Metabolism, Rue Michel-Servet, 1, University of Geneva, Switzerland. Electronic address:

Published: July 2018


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Article Abstract

GRAM domain proteins were reported as novel ER-PM tethers defining specific membrane contact sites (MCS) subdomains. GRAMD2a pre-marks the sites occupied by STIM1 at MCS and its ablation impairs STIM1 translocation, but not store-operated Ca entry. We discuss these apparently counterintuitive findings in the context of STIM/ORAI signaling at MCS.

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http://dx.doi.org/10.1016/j.ceca.2018.04.002DOI Listing

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