Hydrogen-bonded chains with large proton polarizability due to collective proton motion - pathways for protons in biological membranes

• Autorzy: Zundel, G. , Brzezinski, B.
• Języki publikacji: EN

Abstrakty

EN

Hydrogen-bonded chains may show very large proton polarizability due to collective proton motion if they are largely symmetrical. This result was first obtained with polylysine + dihydrogenphosphate and with polyglutamic acid + dihydrogenphosphate systems, respectively. These systems cause intense IR continua, demonstrating their large proton polarizability. This proton polarizability was studied in detail with intramolecular hydrogen-bonded systems and results of these studies are extensively discussed in this paper. Such hydrogen-bonded chains are very effective proton pathways in biology. They can easily be regulated by local electrical fields and by specific interactions. Two such pathways are discussed, the one in the L550 intermediate in the bacteriorhodopsin molecule and the pathway in the F0 subunit of the ATP synthase.

Słowa kluczowe

EN

hydrogen bond; polarizability; collective motion; membranes; IR spectra

• Czasopismo: Polish Journal of Chemistry
• Rocznik: 1998
• Tom: Vol. 72, nr 2
• Strony: 172-192
• Opis fizyczny: Bibliogr. 53 poz., tab., wykr.

Twórcy

autor

Zundel, G.

autor

Brzezinski, B.

• Faculty of Chemistry A. Mickiewicz University ul. Grunwaldzka 6 60-780 Poznań Poland