Specific modulation of protein activity by using a bioorthogonal reaction.

Specific modulation of protein activity by using a bioorthogonal reaction.
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DOI:
10.1002/cbic.201402423
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发表时间:
2014-11-24
期刊:
影响因子:
3.2
通讯作者:
Petersson, E. James
Petersson, E. James
中科院分区:
生物学3区
文献类型:
--
作者:
Warner, John B.;Muthusamy, Anand K.;Petersson, E. James

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Unnatural amino acids with bioorthogonal reactive groups have the potential to provide a rapid and specific mechanism for covalently inhibiting a protein of interest. Here, we use unnatural mutagenesis to insert an azide (Z) into the target protein at positions such that a “click” reaction with an alkyne modulator (X) will alter protein function. This bioorthogonal reactive pair can engender specificity of X for the Z-containing protein even if the target is otherwise identical to another protein, allowing for rapid target validation in living cells. We demonstrate our method using inhibition of the E. coli enzyme aminoacyl transferase by both active site occlusion and allosteric mechanisms. This “clickable magic bullet” strategy should be generally applicable to protein inhibition, within the limits of unnatural amino acid mutagenesis.
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