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Surface-enhanced Raman spectroscopy study of the interaction of the antitumoral drug emodin with human serum albumin

✍ Scribed by G. Fabriciova; S. Sanchez-Cortes; J. V. Garcia-Ramos; P. Miskovsky

Publisher
Wiley (John Wiley & Sons)
Year
2004
Tongue
English
Weight
95 KB
Volume
74
Category
Article
ISSN
0006-3525

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✦ Synopsis

Abstract

Surface‐enhanced Raman spectroscopy was employed in this work to study the interaction between the antitumoral drug emodin and human serum albumin (HSA), as well as the influence of fatty acids in this interaction. We demonstrated that the drug/protein interaction can take place through two different binding sites which are probably localized in the IIA and IIIA hydrophobic pockets of HSA and which correspond to Sudlow's I and II binding sites, respectively. The primary interaction site of this drug seems to be site II in the defatted albumin. Fatty acids seem to displace the drug from site II to site I in nondefatted HSA, due to the high affinity of fatty acids for site II. The drug interacts with the protein through its dianionic form in defatted HSA (when placed in the site II) and through its neutral form in the site I of nondefatted albumins. © 2004 Wiley Periodicals, Inc. Biopolymers, 2004

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