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    CLC proteins comprise Cl- channels and anion/H+ antiporters involved in several fundamental physiological processes. ClC-7 is a lysosomal Cl-/H+ antiporter that together with its beta subunit Ostm1 has a critical role in the ionic homeostasis of lysosomes and of the osteoclasts' resorption lacuna, although the specific underlying mechanism has so far remained elusive. Mutations in ClC-7 cause osteopetrosis, but also a form of lysosomal storage disease and neurodegeneration. Interestingly, both loss-of- and gain-of-function mutations of ClC-7 can be pathogenic, but the mechanistic implications of this finding are still unclear. This review will focus on the recent advances in our understanding of the biophysical properties of ClC-7 and of its role in human diseases with a focus on osteopetrosis and neurodegeneration.


    Giovanni Zifarelli. The Role of the Lysosomal Cl-/H+ Antiporter ClC-7 in Osteopetrosis and Neurodegeneration. Cells. 2022 Jan 21;11(3)

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    PMID: 35159175

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