title: Measurement of fast dynamic intracellular pH in Saccharomyces cerevisiae using benzoic acid pulse.
abstract: pH affects many processes on cell metabolism, such as enzyme kinetics. To enhance the understanding of the living cells, it is therefore indispensable to have a method to monitor the pH in living cells. To accomplish this, a dynamic intracellular pH measurement method applying low concentration benzoic acid pulse was developed. The method was thoroughly validated and successfully implemented for measuring fast dynamic intracellular pH of Saccharomyces cerevisiae in response to a glucose pulse perturbation performed in the BioSCOPE set-up. Fast drop in intracellular pH followed by partial alkalinization was observed following the pulse. The low concentration benzoic acid pulse which was implemented in the method avoids the undesirable effects that may be introduced by benzoic acid to cell metabolism.
authors.affiliation: Department of Biotechnology, Delft University of Technology, Julianalaan 67, 2628 BC Delft, The Netherlands. m.t.a.p.kresnowati@tnw.tudelft.nl
authors.forename: M T A P
authors.initials: MT
authors.lastname: Kresnowati
authors.forename: C
authors.initials: C
authors.lastname: Suarez-Mendez
authors.forename: M K
authors.initials: MK
authors.lastname: Groothuizen
authors.forename: W A
authors.initials: WA
authors.lastname: van Winden
authors.forename: J J
authors.initials: JJ
authors.lastname: Heijnen
mesh_terms: D019817:Benzoic Acid / Q000737:chemistry* / Q000493:pharmacokinetics*; D001681:Biological Assay / Q000379:methods*; D006863:Hydrogen-Ion Concentration; D012441:Saccharomyces cerevisiae / Q000737:chemistry* / Q000378:metabolism*; D013997:Time Factors
chemical_list: D019817:Benzoic Acid