Novel and potential physiological roles of vacuolar-type H+-ATPase in marine organisms

TitleNovel and potential physiological roles of vacuolar-type H+-ATPase in marine organisms
Publication TypeJournal Article
Year of Publication2016
AuthorsTresguerres M
JournalThe Journal of Experimental Biology
Volume219
Pagination2088-97
Date Published2016/07
ISBN Number1477-9145 (Electronic)<br/>0022-0949 (Linking)
Accession Number27445397
Abstract

The vacuolar-type H(+)-ATPase (VHA) is a multi-subunit enzyme that uses the energy from ATP hydrolysis to transport H(+) across biological membranes. VHA plays a universal role in essential cellular functions, such as the acidification of lysosomes and endosomes. In addition, the VHA-generated H(+)-motive force can drive the transport of diverse molecules across cell membranes and epithelia for specialized physiological functions. Here, I discuss diverse physiological functions of VHA in marine animals, focusing on recent discoveries about base secretion in shark gills, potential bone dissolution by Osedax bone-eating worms and its participation in a carbon-concentrating mechanism that promotes coral photosynthesis. Because VHA is evolutionarily conserved among eukaryotes, it is likely to play many other essential physiological roles in diverse marine organisms. Elucidating and characterizing basic VHA-dependent mechanisms could help to determine species responses to environmental stress, including (but not limited to) that resulting from climate change.

DOI10.1242/jeb.128389
Alternate JournalThe Journal of experimental biology
Student Publication: 
No