Hansenula polymorpha Tup1p is important for peroxisome degradation

Leão-Helder, A. N., Krikken, A. M., Lunenborg, M. G. J., Kiel, J. A. K. W., Veenhuis, M. & van der Klei, I. J., 2004, In : Fems Yeast Research. 4, 8, p. 789 - 794 6 p.

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In the yeast Hansenula polymorpha peroxisomes are selectively degraded upon a shift of cells from methanol to glucose-containing media. We identified the H. polymorpha TUP1 gene by functional complementation of the peroxisome degradation deficient mutant pdd2-4. Tup1 proteins function in transcriptional repression of specific sets of genes involved in various cellular processes. Our combined data indicate that H. polymorpha TUP1 is involved in regulation of the switch between peroxisome biogenesis and selective degradation. The initial DNA fragment that complemented H. polymorpha pdd2-4 contained a second gene, encoding H. polymorpha Vps4p. Deletion of the VPS4 gene did not affect selective peroxisome degradation.

Original languageEnglish
Pages (from-to)789 - 794
Number of pages6
JournalFems Yeast Research
Issue number8
Publication statusPublished - 2004


  • Amino Acid Sequence, Gene Expression Regulation, Fungal, Genes, Fungal, Genetic Complementation Test, Molecular Sequence Data, Peroxisomes, Pichia

ID: 2960031