期刊
JOURNAL OF PROTEOME RESEARCH
卷 7, 期 12, 页码 5167-5176出版社
AMER CHEMICAL SOC
DOI: 10.1021/pr800500r
关键词
Phosphoproteomics; T lymphocytes; immune response; IMAC; titanium oxide; LC-MSn; LymPHOS database
资金
- Ministerio de Ciencia y Tecnologia [BIO2004-01788]
- Genoma Spain
T lymphocytes mediate cellular and humoral defense against foreign bodies or autoantigens. An understanding of T-cell information processing furthers studies of the immunological response. We describe a large-scale phosphorylation analysis of primary T cells using a multidimensional separation strategy, involving preparative SDS-PAGE for prefractionation, in-gel digestion and sequential phosphopeptide enrichment using IMAC and TiO2. A total of 281 phosphorylation sites (197 of high confidence, Ascore > 15), mapping to 204 human gene sequences, were identified by LC-MSn analysis in an LTQ linear ion trap. Subsequently, we created the LymPHOS database (http://lymphos.org), which links mass spectrometric peptide information to phosphorylation sites and phosphoprotein sequences.
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