Archives of Microbiology

, Volume 103, Issue 1, pp 51–55 | Cite as

Subcellular distribution of yeast invertase isoenzymes

  • J. Meyer
  • Ph. Matile


Homogenates from yeast cells contain 1% or less of sedimentable invertase activity. Sedimentability is equally low in homogenates from cells repressed or derepressed with regard to invertase secretion. Intracellularly, the mannanprotein form of invertase is largely localized in vacuoles whereas the small isoenzyme is largely present in the soluble cell fraction. These findings indicate that vesicles are not involved in the secretion of invertase. A soluble mode of invertase secretion is discussed.

Key words

Yeast Invertase Isoenzymes Localization Vacuoles Spheroplasts Lipid Granules Cytosol 


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Copyright information

© Springer-Verlag 1975

Authors and Affiliations

  • J. Meyer
    • 1
  • Ph. Matile
    • 1
    • 2
  1. 1.Department of General BotanySwiss Federal Institute of TechnologyZürich
  2. 2.Institut fur Allgenmeine Botanik der Eidgenössischen Technischen HochschuleZürichSwitzerland

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