ISSN:
0899-0042
Keywords:
chiral chromatography
;
cys34 modified human serum albumin
;
ethacrynic acid
;
protein binding
;
enantioselectivity
;
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Derivatization of the free cys34 in human serum albumin (HSA) anchored to a silica matrix has been performed by in situ reaction with ethacrynic acid. This modification, which is reported to occur under physiological conditions, gives rise in practice to a new column with different binding properties with respect to the column based on the native protein. Significant differences were observed in the binding of drugs known to bind to site I, (R)-(S)-warfarin and phenylbutazone, and to site II, 1,4-benzodiazepin-2-ones and nonsteroidal anti-inflammatory agents. In particular, the chromatographic retentions markedly decreased for most of the drugs, and, in the case of chiral compounds, significant differences were often observed in the behavior of the two enantiomers, with higher values of enantioselectivity obtained for some of the examined compounds. Furthermore, the noncovalent binding of ethacrynic acid to the protein modifies the binding properties of the albumin. Chirality 9:335-340, 1997. © 1997 Wiley-Liss, Inc.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
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