VMA12

Accessory component of the proton-transporting vacuolar (V)-ATPase protein pump involved in intracellular iron homeostasis. In aerobic conditions, required for intracellular iron homeostasis, thus triggering the activity of Fe(2+) prolyl hydroxylase (PHD) enzymes, and leading to HIF1A hydroxylation and subsequent proteasomal degradation. Necessary for endolysosomal acidification and lysosomal degradation. May be involved in Golgi homeostasis. Binds 20(S)-hydroxycholesterol (20(S)-OHC) (By similarity)..

Function from UniProtKB (Q8N511), read 2026-09-23. CC BY 4.0.