2015
DOI: 10.1016/j.yjmcc.2014.11.015
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The mitochondrial Ca2+ uniporter complex

Abstract: Calcium influx into the mitochondrial matrix plays important roles in the regulation of cell death pathways, bioenergetics and cytoplasmic Ca2+ signals. During the last few years, several molecular components of the inner membrane mitochondrial Ca2+ uniporter, the dominant pathway for Ca2+ influx into the mitochondrial matrix, have been identified. The uniporter is now recognized as a complex of proteins that includes a Ca2+ pore forming component and accessory proteins that are either required for its channel… Show more

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Cited by 96 publications
(103 citation statements)
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References 70 publications
(140 reference statements)
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“…The differences between heart and skeletal muscle phenotypes might relate to an earlier observations where patch clamp recordings of the inner mitochondrial membrane revealed that MCU-dependent currents were roughly 30-fold lower in heart tissue compared to skeletal muscle [12]. Since we show that MCU protein is abundantly expressed in heart, these differences in activity presumably relate to tissue-specific differences in the regulation of putative negative regulators of MCU including MCUb and MICU1, or the relative role for other components such as EMRE [13]. A recent fascinating report in which a dominant negative form of MCU was expressed in the heart noted that these animals had a markedly impaired chronotropic response to isoproterenol [14].…”
Section: Resultssupporting
confidence: 64%
“…The differences between heart and skeletal muscle phenotypes might relate to an earlier observations where patch clamp recordings of the inner mitochondrial membrane revealed that MCU-dependent currents were roughly 30-fold lower in heart tissue compared to skeletal muscle [12]. Since we show that MCU protein is abundantly expressed in heart, these differences in activity presumably relate to tissue-specific differences in the regulation of putative negative regulators of MCU including MCUb and MICU1, or the relative role for other components such as EMRE [13]. A recent fascinating report in which a dominant negative form of MCU was expressed in the heart noted that these animals had a markedly impaired chronotropic response to isoproterenol [14].…”
Section: Resultssupporting
confidence: 64%
“…Показано, що саме лінкерна ділянка має вирішальне значення як для транспортувальної активнос-ті уніпортера, так і в його чутливості до Ru360. Припускають, що MCU формує олігомери з кількох глікопротеїнів [1,14,23,[28][29][30][31].…”
Section: мітохондрії як внутрішньоклітинне депо саunclassified
“…EMRE -протеїн, що необхідний для взаємодії MCU із димерами MICU1/2. З´ясування ролі інших компонентів комплексу MCU потребує подальших досліджень [28][29][30].…”
Section: мітохондрії як внутрішньоклітинне депо саunclassified
“…Indeed, the uniporter is likely a complex composed of an inner-membrane channel (MCU and MCUb, a dominant-negative subunit) and regulatory subunits (MICU1, MICU2, MCUR1, and EMRE) (for recent reviews see e.g. [69, 75]). In particular, both MICU1 and MICU2 are regulated by calcium through their EF-hand domains, thus accounting for the sigmoidal response of MCU to [Ca 2+ ] cytosol in situ and allowing tight physiological control.…”
Section: Mitochondriamentioning
confidence: 99%