Chapter title |
Identification of Tyrosine Phosphorylated Proteins by SH2 Domain Affinity Purification and Mass Spectrometry
|
---|---|
Chapter number | 23 |
Book title |
SH2 Domains
|
Published in |
Methods in molecular biology, January 2017
|
DOI | 10.1007/978-1-4939-6762-9_23 |
Pubmed ID | |
Book ISBNs |
978-1-4939-6760-5, 978-1-4939-6762-9
|
Authors |
Sophia Buhs, Helwe Gerull, Peter Nollau |
Editors |
Kazuya Machida, Bernard A. Liu |
Abstract |
Phosphotyrosine signaling plays a major role in the control of many important biological functions such as cell proliferation and apoptosis. Deciphering of phosphotyrosine-dependent signaling is therefore of great interest paving the way for the understanding of physiological and pathological processes of signal transduction. On the basis of the specific binding of SH2 domains to phosphotyrosine residues, we here present an experimental workflow for affinity purification and subsequent identification of tyrosine phosphorylated proteins by mass spectrometry. In combination with SH2 profiling, a broadly applicable platform for the characterization of phosphotyrosine profiles in cell extracts, our pull down strategy enables researchers by now to identify proteins in signaling cascades which are differentially phosphorylated and selectively recognized by distinct SH2 domains. |
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