Phos-tag beads as an immunoblotting enhancer for selective detection of phosphoproteins in cell lysates

Analytical Biochemistry 389 巻 1 号 83-85 頁 2009-06-01 発行
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タイトル ( eng )
Phos-tag beads as an immunoblotting enhancer for selective detection of phosphoproteins in cell lysates
作成者
Kinoshita-Kikuta Emiko
収録物名
Analytical Biochemistry
389
1
開始ページ 83
終了ページ 85
抄録
The low specificity of anti-phosphoprotein antibodies is often a problem in immunoblotting analyses. We introduce a simple pretreatment procedure for cell lysates to give more-specific detection of phosphoproteins in immunoblotting. Cellular phosphoproteins were preferentially trapped on Phos-tag agarose phosphate-affinity beads in a homemade spin-centrifuge microtube unit, and nonphosphorylated proteins were excluded in the filtrate. The phosphoprotein-bound beads suspended in a sample-loading dye solution were subjected to sodium dodecyl sulfate-polyacrylamide gel electrophoresis, followed by Western blotting. We demonstrated improved detection of phosphorylated Shc and mitogen-activated protein kinase isoforms in A431 cell lysates by this new technique
著者キーワード
Phos-tag
Immunoblotting enhancer
Anti-phosphoprotein antibody
Phosphoprotein
Phosphorylation
Signal transduction
Western blotting
NDC分類
生物科学・一般生物学 [ 460 ]
言語
英語
資源タイプ 学術雑誌論文
出版者
Elsevier
発行日 2009-06-01
権利情報
Copyright (c) 2009 Elsevier Inc.
出版タイプ Author’s Original(十分な品質であるとして、著者から正式な査読に提出される版)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 0003-2697
[ISSN] 1096-0309
[DOI] 10.1016/j.ab.2009.03.026
[NCID] AA00524867
[NCID] AA11537838
[DOI] http://dx.doi.org/10.1016/j.ab.2009.03.026