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Characterization of phenolic acids binding to thrombin using frontal affinity chromatography and molecular docking

Abstract

As a serine protease, thrombin (THR) plays an important role in the coagulation cascade. In this study, a frontal affinity chromatography (FAC) method was developed for the characterization of interactions between immobilized thrombin and phenolic acids, which have potential thrombin inhibitory activity. Firstly, a simple method to immobilize thrombin was developed, where the immobilized artificial membrane (IAM) chromatographic column was used as carrier material for entrapping THR. Then the frontal analysis for five compounds was performed both on the THR-IAM column and argatroban-THR-IAM column. Finally, the dissociation constants were determined and the values are 2.46, 12.42, 44.93, 76.91 and 100.69 μmol L-1 for gallic acid, protocatechuic acid, ferulic acid, chlorogenic acid and sinapic acid, respectively. In addition, molecular docking was further applied to study the interaction between the compounds and thrombin, and the rank order of docking energy values is similar to that of the dissociation constants of compounds determined by FAC. The results of present study demonstrate that the interaction between compounds and thrombin can be well characterized by FAC experiments along with molecular docking.

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Publication details

The article was received on 08 Jun 2017, accepted on 01 Aug 2017 and first published on 02 Aug 2017


Article type: Paper
DOI: 10.1039/C7AY01433C
Citation: Anal. Methods, 2017, Accepted Manuscript
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    Characterization of phenolic acids binding to thrombin using frontal affinity chromatography and molecular docking

    Y. Yang, S. Li, Q. Zhang, H. Chen, Z. Xia and F. Yang, Anal. Methods, 2017, Accepted Manuscript , DOI: 10.1039/C7AY01433C

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