Proteomics

Dataset Information

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Proteomic screen reveals Fbw7 as a modulator of the NF-kB pathway


ABSTRACT: Proteomics on HCT116 cells. 3 samples wild-type, 3 samples Fbw7 KO. Subcellular fractionation to cytoplasmic and nuclear fractions. Proteins were reduced with DTT, alkylated with iodoacetamide, digested with trypsin, and labelled with TMT6-plex: 126,127,128 - wildtype; 129,130,131 - Fbw7 KO. Sample separation by high resolution isoelectric focusing at peptide level, whereafter 72 fractions were loaded onto reversed phase LC-MSMS

INSTRUMENT(S): LTQ Orbitrap Velos

ORGANISM(S): Homo Sapiens (human)

SUBMITTER: Rui Branca  

LAB HEAD: Rui Branca

PROVIDER: PXD000005 | Pride | 2012-06-29

REPOSITORIES: Pride

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Publications


Fbw7 is a ubiquitin-ligase that targets several oncoproteins for proteolysis, but the full range of Fbw7 substrates is not known. Here we show that by performing quantitative proteomics combined with degron motif searches, we effectively screened for a more complete set of Fbw7 targets. We identify 89 putative Fbw7 substrates, including several disease-associated proteins. The transcription factor NF-κB2 (p100/p52) is one of the candidate Fbw7 substrates. We show that Fbw7 interacts with p100 vi  ...[more]

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