CHX28 (cation/hydrogen exchanger 28); monovalent cation:proton antiporter. similar to ATCHX15 (cation/hydrogen exchanger 15), monovalent cation:proton antiporter [Arabidopsis thaliana] (TAIR:AT2G13620.1); similar to hypothetical protein [Vitis vinifera] (GB:CAN62060.1); similar to unnamed protein product [Vitis vinifera] (GB:CAO40816.1); contains InterPro domain Sodium/hydrogen exchanger; (InterPro:IPR006153)