Abstract:
: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.
journal_name
Proteomicsjournal_title
Proteomicsauthors
Journet A,Klein G,Brugière S,Vandenbrouck Y,Chapel A,Kieffer S,Bruley C,Masselon C,Aubry Ldoi
10.1002/pmic.201100313subject
Has Abstractpub_date
2012-01-01 00:00:00pages
241-5issue
2eissn
1615-9853issn
1615-9861journal_volume
12pub_type
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