Transport of acyclic polyols in Saccharomyces cerevisiae
Jazyk angličtina Země Spojené státy americké Médium print
Typ dokumentu časopisecké články
PubMed
240765
DOI
10.1007/bf02878113
Knihovny.cz E-zdroje
- MeSH
- aktivní transport MeSH
- buněčná membrána metabolismus MeSH
- cukerné alkoholy metabolismus MeSH
- dinitrofenoly farmakologie MeSH
- kinetika MeSH
- koncentrace vodíkových iontů MeSH
- polysacharidy metabolismus MeSH
- protoplasty metabolismus MeSH
- Saccharomyces cerevisiae metabolismus MeSH
- teplota MeSH
- uran farmakologie MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- cukerné alkoholy MeSH
- dinitrofenoly MeSH
- polysacharidy MeSH
- uran MeSH
Acyclic polyols (erythritol, xylitol, ribitol, D-arabinitol, mannitol, sorbitol and galactitol) are not metabolized by Saccharomyces cerevisiae. They are taken up by a fast non-active process, reaching 40-70% distribution referred to total cell water. The uptake is insensitive to temperature, pH (between 4 and 8), 2,4-dinitrophenol and uranyl ions. Its initial rate rises linearly with concentration from 10(-5)M to 1M. The process resembles simple diffusion through large pores or the trapping of the whole solution on the surface. Protoplasts behave like whole cells in this respect. Only erythritol shows a second type of uptake which is inhibitor-insensitive but temperature-dependent.
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Transport of ribitol and D-glucose in the yeast Candida guillermondii
