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Kardaleva Proletina Guncheva Maya Todinova Svetla Angelov Ivan Ossowicz Paula Janus Ewa 《Journal of Thermal Analysis and Calorimetry》2020,142(5):1911-1917
Journal of Thermal Analysis and Calorimetry - This is the first study on the interactions of ionic liquids (ILs) composed of cations amino acid esters and anion ketoprofen (KETO) with human serum... 相似文献
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Maya Guncheva Krassimira Idakieva Svetla Todinova Denitsa Yancheva Tsvetelina Paunova-Krasteva Paula Ossowicz Ewa Janus 《Molecules (Basel, Switzerland)》2021,26(6)
Novel biocompatible compounds that stabilize proteins in solution are in demand for biomedical and/or biotechnological applications. Here, we evaluated the effect of six ionic liquids, containing mono- or dicholinium [Chol]1or2 cation and anions of charged amino acids such as lysine [Lys], arginine [Arg], aspartic acid [Asp], or glutamic acid [Glu], on the structure, thermal, and storage stability of the Rapana thomasiana hemocyanin (RtH). RtH is a protein with huge biomedicinal potential due to its therapeutic, drug carrier, and adjuvant properties. Overall, the ionic liquids (ILs) induce changes in the secondary structure of RtH. However, the structure near the Cu-active site seems unaltered and the oxygen-binding capacity of the protein is preserved. The ILs showed weak antibacterial activity when tested against three Gram-negative and three Gram-positive bacterial strains. On the contrary, [Chol][Arg] and [Chol][Lys] exhibited high anti-biofilm activity against E. coli 25213 and S. aureus 29213 strains. In addition, the two ILs were able to protect RtH from chemical and microbiological degradation. Maintained or enhanced thermal stability of RtH was observed in the presence of all ILs tested, except for RtH-[Chol]2[Glu]. 相似文献
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