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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 20, Number 7
BKCSDE 20(7)
July 20, 1999

Title	Inactivation of Thermolysin with N-Chloroacetyl-N-hydroxy-β-L-phenylalanine N-methylamide
Author	Yonghao Jin, Dong H. Kim
Keywords
Abstract	N-Chloroacetyl-N-hydroxy- β-Phe-NHMe and N-chloroacetyl-N-hydroxy-α-Phe-OMe were designed, synthe-sized and evaluated as irreversible inhibitors of thermolysin, a representative zinc protease. Analysis of kinetic data of the enzymic activity of thermolysin in the presence of these inhibitors revealed that they are indeed potent inactivators of thermolysin having the k(inact)/K(I ) values of 3.06 and 0.05 M (-1) s(-1) , respectively. We have established that the inhibitory activity of N-chloroacetyl-N-hydroxy-β-Phe-NHMe stems mainly from the (R)-enantiomer that belongs to the "L" series. The (R)-enantiomer is also responsible for the inactivation in the case of N-chloroacetyl-N-hydroxy-α-Phe-OMe, but this enantiomer belongs to the "D"-series.
Page	777 - 780
Full Text	PDF

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