Membrane potential independent transport of NH3 in the absence of ammonium permeases in Saccharomyces cerevisiae. - Hugo F. Cueto-Rojas; Nicholas Milne; Ward van Helmond; Mervin M. Pieterse; Antonius J. A. van Maris; Jean-Marc Daran; Sebastian Aljoscha Wahl (BMC Syst. Biol., 2017)