Mitochondrial sodium-calcium exchange-Can TMEM65 do it alone?

Garbincius, Joanne F; Elrod, John W · Cell Metab · 2025

editorial · Level V

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Abstract

The mechanisms mediating calcium transport into and out of the mitochondrial matrix have critical implications for signaling, bioenergetics, and cell death. Zhang et al.<sup>1</sup> propose that the protein TMEM65, recently identified as a key component of the mitochondrial calcium efflux machinery, functions as the mitochondrial sodium/calcium exchanger. Their report encourages critical re-examination of the components required for mitochondrial calcium handling.

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