Login for students

Login for employees

Publication detail

Transport of Biochemically Important Ions and Compounds across Biomimetic Membranes
Authors: Navrátil Tomáš | Nováková Kateřina | Šestáková Ivana | Langmaier Jiří | Heyrovský Michael | Chýlková Jaromíra | Mareček Vladimír
Year: 2014
Type of publication: ostatní - článek ve sborníku
Name of source: 47th Heyrovsky discussion on electrochemistry of organic and bioactive compounds
Publisher name: Ústav fyzikální chemie Jaroslava Heyrovského AV ČR
Place: Praha
Page from-to: 48
Titles:
Language Name Abstract Keywords
eng Transport of Biochemically Important Ions and Compounds across Biomimetic Membranes A large number of biologically important ions and compounds are coming into contact with plants, animals or men. Such compounds can be transported into these organisms, more precisely, into their cells, and after entering cells, into their subcellular structures (e.g., from cytosol to vacuole). Simultaneously, they are transported into different parts of organism (e.g., from plant roots to leaves). More precisely, any species taking part in metabolic processes must be first transported across the biological membranes. The latest results in elucidation transport processes of charged species across the biomimetic membranes will be presented in this contribution. The attention has been paid to the transport of hazardous metals (e.g., Cu, Cd) in free form as well as in form of their complexes (e.g., with low molecular weight organic acids, phytochelatins). Three different ways of preparation of biomimetic membranes, composed of simple phospholipids (PLs) (e.g., lecithin) have been realized: liposomes, self-assembling PL membranes (PLMs) on the agar surface [1], and PLMs in pores of polycarbonate substrate [2-5]. The biomimetic membranes composed of lecithin and cholesterol have been studied too [6]. Firstly, the real transporters were replaced by fat-soluble polypeptides [5]. Later, the transport processes have been studied using real membranes (protoplasts isolated from leaves of tobacco, potato, and barley). Finally, the real membranes mixed with model PLMs have been investigated. The PLMs and the transporting processes were characterized by electrochemical methods (electrochemical impedance spectroscopy (EIS), voltammetry, ion selective electrodes) as well as by non-electrochemical methods (optical microscopy, AFM, electrospray ionization mass spectrometry (ESI-MS) [5]).

Departments

Other Parts

Map

en.mapy.cz

Services

Popular Links

© 2023 University of Pardubice, Studentská 95, 532 10 Pardubice 2
Phone: +420 466 036 111, 466 036 112, 466 036 113
Webmaster, RSS
Data box ID: f5vj9hu
Accessibility Statement
CC BY-NC-ND 4.0Creative CommonsAttributionNonCommercialNoDerivatives