Structure and elevator mechanism of the mammalian sodium/proton exchanger NHE9.

ABSTRACT: Na⁺ /H⁺ exchangers (NHEs) are ancient membrane-bound nanomachines that work to regulate intracellular pH, sodium levels and cell volume. NHE activities contribute to the control of the cell cycle, cell proliferation, cell migration and vesicle trafficking. NHE dysfunction has been linked to many diseases, and they are targets of pharmaceutical drugs. Despite their fundamental importance to cell homeostasis and human physiology, structural information for the mammalian NHE was lacking. Here, we report the cryogenic electron microscopy structure of NHE isoform 9 (SLC9A9) from Equus caballus at 3.2 Å resolution, an endosomal isoform highly expressed in the brain and associated with autism spectrum (ASD) and attention deficit hyperactivity (ADHD) disorders. Despite low se

SUBMITTER: Winklemann I 

PROVIDER: S-EPMC7737618 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature