The interactions between lipase and pyridinium ligands investigated by electrochemical and spectrophotometric methods
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Published:2016-04-21
Issue:1
Volume:6
Page:91
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ISSN:1847-9286
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Container-title:Journal of Electrochemical Science and Engineering
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language:
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Short-container-title:J. Electrochem. Sci. Eng.
Author:
Patriche Simona,Lupu Elena Georgiana,Cârâc Andreea,Dinică Rodica Mihaela,Cârâc Geta
Abstract
<p class="PaperAbstract"><span lang="EN-GB">The interaction between pyridinium ligands derived from 4,4’-bipyridine (N,N’-bis(p-bromophenacyl)-4,4’-bipyridinium dibromide – Lr) and (N,N’-bis(p-bromophenacyl)-1,2-bis (4-pyridyl) ethane dibromide – Lm) with lipase enzyme was evaluated. The stability of the pyridinium ligands, having an essential role in biological systems, in 0.1 M KNO<sub>3</sub> as supporting electrolyte is influenced by the lipase concentration added. The pH and conductometry measurements in aqueous solution suggest a rapid ionic exchange process. The behavior of pyridinium ligands in the presence of lipase is investigated by cyclic voltammetry and UV/Vis spectroscopy, which indicated bindings and changes from the interaction between them. The voltammograms recorded on the glassy carbon electrode showed a more intense electronic transfer for the Lr interaction with lipase compared to Lm, which is due to the absence of mobile ethylene groups from Lr structure.</span></p>
Publisher
International Association of Physical Chemists (IAPC)
Subject
Electrochemistry,Materials Chemistry,Colloid and Surface Chemistry,Chemical Engineering (miscellaneous)