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Endosomal/lysosomal potassium channel TMEM175 This family represents the conserved region of transmembrane protein 175 which is an organelle-specific potassium channel responsible for potassium conductance in endosomes and lysosomes. It forms a potassium-permeable leak-like channel, which regulates luminal pH stability and is required for autophagosome-lysosome fusion. TMEM175 is the major lysosomal potassium conductance. It is present in eukaryotes, where TMEM175 has two repeats of 6-transmembrane-spanning segments, and also in prokaryotes in which it has one copy.
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Jiyao W et al.(2023). "The conserved domain database in 2023.",