Abstract:
:Approximately 25% of eukaryotic proteins possessing homology to at least two transmembrane domains are predicted to be embedded in biological membranes. Nevertheless, this group of proteins is not usually well represented in proteome-wide experiments due to their refractory nature. Here we present a quantitative mass spectrometry-based comparison of membrane protein expression in cerebellar granule neurons grown in primary culture that were isolated from wild-type mice and mice lacking the cellular prion protein. This protein is a cell-surface glycoprotein that is mainly expressed in the central nervous system and is involved in several neurodegenerative disorders, though its physiological role is unclear. We used a low specificity enzyme α-chymotrypsin to digest membrane proteins preparations that had been separated by SDS-PAGE. The resulting peptides were labeled with tandem mass tags and analyzed by MS. The differentially expressed proteins identified using this approach were further analyzed by multiple reaction monitoring to confirm the expression level changes.
journal_name
J Proteome Resjournal_title
Journal of proteome researchauthors
Stella R,Cifani P,Peggion C,Hansson K,Lazzari C,Bendz M,Levander F,Sorgato MC,Bertoli A,James Pdoi
10.1021/pr200759msubject
Has Abstractpub_date
2012-02-03 00:00:00pages
523-36issue
2eissn
1535-3893issn
1535-3907journal_volume
11pub_type
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