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Phosphoamino acid analysis : ウィキペディア英語版 | Phosphoamino acid analysis
Phosphoamino acid analysis, or PAA, is an experimental technique used in molecular biology to determine which amino acid or acids are phosphorylated in a protein. ==Technique== A protein is first phosphorylated using 32P-labeled ATP, usually via an ''in vitro'' kinase assay. Most of the amino acids in the protein are then hydrolyzed, usually by the use of a strong acid such as hydrochloric acid. These amino acids are then separated using 2-dimensional thin layer chromatography, along with amino acid standards for the three amino acids that are phosphorylated in eukaryotes: serine, threonine, and tyrosine. These amino acid standards can be visualized on the TLC substrate by exposure to ninhydrin, which colors the amino acids a visible purple when heated at ~100 °C. The radioactive amino acids can be detected via autoradiography, and an overlay of the two images will show which amino acids are phosphorylated.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Phosphoamino acid analysis」の詳細全文を読む
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