Send to:

Choose Destination
See comment in PubMed Commons below
Proteomics. 2012 Jan;12(2):241-5. doi: 10.1002/pmic.201100313. Epub 2011 Dec 20.

Investigating the macropinocytic proteome of Dictyostelium amoebae by high-resolution mass spectrometry.

Author information

  • 1CEA, IRTSV, Laboratoire Biologie à Grande Echelle, Grenoble, France.


The cellular slime mold Dictyostelium discoideum is a soil-living eukaryote, which feeds on microorganisms engulfed by phagocytosis. Axenic laboratory strains have been produced that are able to use liquid growth medium internalized by macropinocytosis as the source of food. To better define the macropinocytosis process, we established the inventory of proteins associated with this pathway using mass spectrometry-based proteomics. Using a magnetic purification procedure and high-performance LC-MS/MS proteome analysis, a list of 2108 non-redundant proteins was established, of which 24% featured membrane-spanning domains. Bioinformatics analyses indicated that the most abundant proteins were linked to signaling, vesicular trafficking and the cytoskeleton. The present repertoire validates our purification method and paves the way for a future proteomics approach to study the dynamics of macropinocytosis.

Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Wiley
    Loading ...
    Write to the Help Desk