Chemoselective One-Step Alkylation and Isolation of Thiophosphorylated Cdk2 Substrates in the Presence of Native Cysteine

The elucidation of signalling pathways relies heavily upon the identification of protein kinase substrates. Recent investigations have demonstrated the efficacy of chemical genetics using ATP analogues and modified protein kinases for specific substrate labelling. Here we combine N⁶-(cyclohexyl)ATPγ...

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Published in:Chembiochem : a European journal of chemical biology Vol. 12; no. 4; pp. 633 - 640
Main Authors: Lee, Sarah E, Elphick, Lucy M, Kramer, Holger B, Jones, Alexandra M.E, Child, Emma S, Anderson, Alexandra A, Bonnac, Laurent, Suwaki, Natsuko, Kessler, Benedikt M, Gouverneur, Véronique, Mann, David J
Format: Journal Article
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Published: Weinheim Wiley-VCH Verlag 07-03-2011
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Abstract The elucidation of signalling pathways relies heavily upon the identification of protein kinase substrates. Recent investigations have demonstrated the efficacy of chemical genetics using ATP analogues and modified protein kinases for specific substrate labelling. Here we combine N⁶-(cyclohexyl)ATPγS with an analogue-sensitive cdk2 variant to thiophosphorylate its substrates and demonstrate a pH-dependent, chemoselective, one-step alkylation to facilitate the detection or isolation of thiophosphorylated peptides.
AbstractList The elucidation of signalling pathways relies heavily upon the identification of protein kinase substrates. Recent investigations have demonstrated the efficacy of chemical genetics using ATP analogues and modified protein kinases for specific substrate labelling. Here we combine N 6 ‐(cyclohexyl)ATPγS with an analogue‐sensitive cdk2 variant to thiophosphorylate its substrates and demonstrate a pH‐dependent, chemoselective, one‐step alkylation to facilitate the detection or isolation of thiophosphorylated peptides.
The elucidation of signalling pathways relies heavily upon the identification of protein kinase substrates. Recent investigations have demonstrated the efficacy of chemical genetics using ATP analogues and modified protein kinases for specific substrate labelling. Here we combine N(6) -(cyclohexyl)ATPγS with an analogue-sensitive cdk2 variant to thiophosphorylate its substrates and demonstrate a pH-dependent, chemoselective, one-step alkylation to facilitate the detection or isolation of thiophosphorylated peptides.
The elucidation of signalling pathways relies heavily upon the identification of protein kinase substrates. Recent investigations have demonstrated the efficacy of chemical genetics using ATP analogues and modified protein kinases for specific substrate labelling. Here we combine N⁶-(cyclohexyl)ATPγS with an analogue-sensitive cdk2 variant to thiophosphorylate its substrates and demonstrate a pH-dependent, chemoselective, one-step alkylation to facilitate the detection or isolation of thiophosphorylated peptides.
The elucidation of signalling pathways relies heavily upon the identification of protein kinase substrates. Recent investigations have demonstrated the efficacy of chemical genetics using ATP analogues and modified protein kinases for specific substrate labelling. Here we combine N6‐(cyclohexyl)ATPγS with an analogue‐sensitive cdk2 variant to thiophosphorylate its substrates and demonstrate a pH‐dependent, chemoselective, one‐step alkylation to facilitate the detection or isolation of thiophosphorylated peptides. It's a kinase magic: The identification of protein substrates is hampered by the large number of kinases active in cells at a given time. Here we use a chemical genetic approach to specifically label the substrates of an analogue‐sensitive kinase with thiophosphate and use pH‐dependent S‐alkylation to selectively recover thiophosphorylated peptides.
Author Anderson, Alexandra A.
Suwaki, Natsuko
Kessler, Benedikt M.
Elphick, Lucy M.
Jones, Alexandra M. E.
Kramer, Holger B.
Gouverneur, Véronique
Mann, David J.
Bonnac, Laurent
Child, Emma S.
Lee, Sarah E.
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CitedBy_id crossref_primary_10_1039_C2SC20846F
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Snippet The elucidation of signalling pathways relies heavily upon the identification of protein kinase substrates. Recent investigations have demonstrated the...
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SubjectTerms Alkylation
ATP
cdk2
chemical genetics
Chlorides - chemistry
cyclin
Cyclin-Dependent Kinase 2 - chemistry
Cyclin-Dependent Kinase 2 - genetics
Cysteine - chemistry
Electrophoresis, Polyacrylamide Gel
Hydrogen-Ion Concentration
kinases
Peptides - chemistry
Peptides - genetics
Phosphorus Compounds - chemistry
Signal Transduction
substrate isolation
Substrate Specificity
thiophosphorylation
Title Chemoselective One-Step Alkylation and Isolation of Thiophosphorylated Cdk2 Substrates in the Presence of Native Cysteine
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