Modification of bovine serum albumin with aminophenylboronic acid as glycan sensor based on surface plasmon resonance and isothermal titration calorimetry
| Autor: | Xiao-Bin Li, Peng Yu, Tian-Wei Jia, Teng-Fei Zhao, De-Min Wang, Yun He, Hao-Jie He, Xin Meng, Yang Yang |
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| Rok vydání: | 2017 |
| Předmět: |
Aminophenylboronic acid
Glycan Chromatography biology Glycopolymer Organic Chemistry food and beverages Isothermal titration calorimetry 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry biology.protein Surface plasmon resonance Bovine serum albumin 0210 nano-technology |
| Zdroj: | Heterocyclic Communications. 23:237-243 |
| ISSN: | 2191-0197 0793-0283 |
| DOI: | 10.1515/hc-2017-0049 |
| Popis: | Aminophenylboronic acid (ABA) modified bovine serum albumin (BSA) was prepared as neolectin and its interactions with oligosaccharides and glycopolymer were studied by surface plasmon resonance (SPR) and isothermal titration calorimetry (ITC). The conjugation between the primary amine group of the ABA molecule and lysine residues on BSA was performed with an adipate-based strategy to afford the synthetic neoprotein. The number of ABA molecules loaded to BSA surface was determined by matrix-assisted laser desorption/ionization – time of flight (MALDI-TOF) mass spectrometry. In the BSA-ABA and sugar interaction study, no signal was observed for both the SPR and ITC sensor platform using monosaccharides as the analyte, indicating a weak binding affnity, while the galactose modified polymer showed an enhanced response. The binding affinities of the galactosyl-polymer to BSA-ABA from SPR and ITC data were in the micromolar range. |
| Databáze: | OpenAIRE |
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