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Merck

The specificity and kinetic properties of trypsin ethylated at the binding site.

FEBS letters (1985-01-28)
R Ben Avraham, Y Shalitin
要旨

Treatment of trypsin with triethyloxonium tetrafluoroborate at pH 8, 25 degrees C, results in abolition of binding to the enzyme of specific cationic substrates and inhibitors. The binding constant of soybean trypsin inhibitor to ethylated trypsin is 10000-fold smaller than to intact trypsin. However, the intrinsic ability of trypsin to recognize and react with nonspecific neutral substrates and inhibitors is not lost, and in several cases even considerably enhanced. Thus ethylated trypsin (Tret) resembles chymotrypsin in its behavior. Trypsin-like enzymes are also affected in a similar manner.

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製品番号
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製品内容

Sigma-Aldrich
トリエチルオキソニウムテトラフルオロボラート 溶液, 1.0 M in methylene chloride
Sigma-Aldrich
トリエチルオキソニウムテトラフルオロボラート, ≥97.0% (T)