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Related Experiment Videos

Pmp27 promotes peroxisomal proliferation

P A Marshall1, Y I Krimkevich, R H Lark

  • 1Department of Pharmacology, University of Texas Southwestern Medical Center, Dallas 75235-9041, USA.

The Journal of Cell Biology
|April 1, 1995
PubMed
Summary
This summary is machine-generated.

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The protein Pmp27 promotes peroxisomal proliferation in yeast. Disrupting the PMP27 gene leads to fewer, larger peroxisomes, while overexpressing it increases peroxisome number.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Peroxisomes are vital organelles in eukaryotic cells, essential for various metabolic processes.
  • Peroxisome division is primarily understood to occur via budding, but the molecular mechanisms remain unclear.
  • Peroxisomal proliferation in Saccharomyces cerevisiae can be induced by oleate, a substrate metabolized by peroxisomal enzymes.

Purpose of the Study:

  • To identify and characterize proteins involved in peroxisomal proliferation.
  • To elucidate the molecular function of Pmp27 in regulating peroxisome biogenesis and division.

Main Methods:

  • Protein purification and gene isolation/sequencing of Pmp27.
  • Gene disruption and overexpression studies in Saccharomyces cerevisiae.

Related Experiment Videos

  • Phenotypic analysis of peroxisome morphology and growth characteristics.

    • Main Results:

    • Pmp27, a hydrophobic peroxisomal membrane protein, was identified and its gene sequenced.
    • Deletion of PMP27 resulted in slower growth on oleate and the formation of enlarged peroxisomes.
    • Overexpression of PMP27 led to an increased number of normal-sized peroxisomes.

    Conclusions:

    • Pmp27 plays a crucial role in regulating peroxisome number and size.
    • The protein likely participates in peroxisomal elongation or fission events.
    • Understanding Pmp27 function provides insights into the molecular mechanisms of peroxisome division.