ATP synthase subunit H family protein. similar to ATP synthase subunit H family protein [Arabidopsis thaliana] (TAIR:AT4G26710.2); similar to ATP synthase subunit H family protein [Arabidopsis thaliana] (TAIR:AT4G26710.1); similar to unknown [Populus trichocarpa] (GB:ABK92781.1); contains InterPro domain ATPase, V0 complex, subunit E; (InterPro:IPR008389)