Essential MCU regulator, mitochondrial - Q9H4I9 (EMRE_HUMAN)


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Essential regulatory subunit of the mitochondrial calcium uniporter complex (uniplex), a complex that mediates calcium uptake into mitochondria (PubMed:24231807, PubMed:26774479, PubMed:27099988). Required to bridge the calcium-sensing proteins MICU1 and MICU2 with the calcium-conducting subunit MCU (PubMed:24231807). Plays a central role in regulating the uniplex complex response to intracellular calcium signaling (PubMed:27099988). Acts by mediating activation of MCU and retention of MICU1 to the MCU pore, in order to ensure tight regulation of the uniplex complex and appropriate responses to intracellular calcium signaling (PubMed:27099988). UniProt
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Subunit Structure
Component of the uniplex complex, composed of MCU, MCUB, MICU1, MICU2 and EMRE/SMDT1 (PubMed:24231807). Interacts (via the transmembrane region) with MCU (via the first transmembrane region); the interaction is direct (PubMed:27099988). Interacts (via the poly-Asp region) with MICU1 (via polybasic region); the interaction is direct (PubMed:27099988). Interacts (via its C-terminal poly-Asp tail) with MCUR1; the interaction is direct (PubMed:27184846). Unprocessed form interacts (via transit peptide) with MAIP1 (PubMed:27642048). UniProt
The poly-Asp region at the C-terminus mediates interaction with the polybasic region of MICU1. UniProt
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