- A Reagent for Reduction of Disulfide Bonds in Proteins That Reduces Disulfide Bonds Faster Than Does Dithiothreitol
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We have synthesized a new reagent - N,N'-dimethyl-N,N'-bis(mercaptoacetyl)hydrazine (DMH) - for the reduction of disulfide bonds in proteins.DMH reduces disulfide bonds 7 times faster than does dithiothreitol (DTT) in water at pH 7.DMH reduces mixed disulfides of cysteine proteases (papain and ficin) especially rapidly (30 times faster than DTT).DMH (ε0 = -0.300 V) reduces noncyclic disulfides completely, although it is less strongly reducing than DTT (ε0 = -0.356 V).
- Singh, Rajeeva,Whitesides, George M.
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p. 2332 - 2337
(2007/10/02)
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- meso-2,5-Dimercapto-N,N,N',N'-tetramethyladipamide: A Readily Available, Kinetically Rapid Reagent for the Reduction of Disulfides in Aqueous Solution
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meso-2,5-Dimercapto-N,N,N',N'-tetramethyladipamide (meso-DTA) reduces disulfide bonds up to 8 times faster (kinetic) than does dithiothreitol (DTT) in aqueous solution at pH 7.0. meso-DTA is easily synthesized in five steps (39percent overall yield) from adipic acid. meso-DTA, which forms a cyclic disulfide, is less reducing than DTT by approximately 56 mV, but is much more reducing than mercaptoethanol.
- Lees, Watson J.,Singh, Rajeeva,Whitesides, George M.
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p. 7328 - 7331
(2007/10/02)
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