calcium channel complex inner mitochondrial membrane protein complex uniplex complex mitochondrial uniporter holocomplex 2013-12-04T06:44:35Z cellular_component A calcium channel complex in the mitochondrial inner membrane capable of highly-selective calcium channel activity. Its components include the EF-hand-containing proteins mitochondrial calcium uptake 1 (MICU1) and MICU2, the pore-forming subunit mitochondrial calcium uniporter (MCU) and its paralog MCUb, and the MCU regulator EMRE. mitochondrial uniporter complex sp GO:1990246