Chapter title |
Kidney Research
|
---|---|
Chapter number | 18 |
Book title |
Kidney Research
|
Published in |
Methods in molecular biology, January 2016
|
DOI | 10.1007/978-1-4939-3353-2_18 |
Pubmed ID | |
Book ISBNs |
978-1-4939-3351-8, 978-1-4939-3353-2
|
Authors |
Horinouchi, Takahiro, Terada, Koji, Higashi, Tsunehito, Miwa, Soichi, Takahiro Horinouchi, Koji Terada, Tsunehito Higashi, Soichi Miwa |
Abstract |
Protein phosphorylation has traditionally been detected by radioisotope phosphate labeling of proteins with radioactive ATP. Several nonradioactive assays with phosphorylation site-specific antibodies are now available for the analysis of phosphorylation status at target sites. However, due to their high specificity, these antibodies they cannot be used to detect unidentified phosphorylation sites. Recently, Phos-tag technology has been developed to overcome the disadvantages and limitations of phosphospecific antibodies. Phos-tag and its derivatives conjugated to biotin, acrylamide, or agarose, form alkoxide-bridged dinuclear metal complexes, which can capture phosphate monoester dianions bound to serine, threonine, and tyrosine residues, in an amino acid sequence-independent manner. Here, we describe our method, which is based on in vitro kinase assay and Western blotting analysis using biotinylated Phos-tag and horseradish peroxidase-conjugated streptavidin, to determine the sites of TRPC6 (transient receptor potential canonical 6) channel phosphorylated by protein kinase A. |
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