A Der
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Explore the profile of A Der including associated specialties, affiliations and a list of published articles.
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Articles
26
Citations
194
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Recent Articles
1.
Nasztor Z, Der A, Bogar F
J Mol Model
. 2017 Sep;
23(10):298.
PMID: 28956172
Protein stability is known to be influenced by the presence of Hofmeister active ions in the solution. In addition to direct ion-protein interactions, this influence manifests through the local alterations...
2.
Toth-Boconadi R, Der A, Keszthelyi L
Bioelectrochemistry
. 2011 Jan;
81(1):17-21.
PMID: 21236739
All the intermediates of the bacteriorhodopsin photocycle are excitable with light of suitable wavelength. This property might regulate the activity in the cells when they are exposed in the nature...
3.
Butt H, Fendler K, Der A, Bamberg E
Biophys J
. 2009 May;
56(5):851-9.
PMID: 19431749
Temperature jump experiments were carried out on purple membranes oriented and fixed in polyacrylamide gel. With green background illumination a relaxation of the photocurrent after an infrared laser pulse could...
4.
Der A, Szaraz S, Czege J
Biophys J
. 2009 May;
54(6):1175-8.
PMID: 19431737
Excitation of bacteriorhodopsin (BR) in its beta absorption band drives a photocycle identical in the millisecond range, to that excited in the alpha band of BR. The relative contribution of...
5.
Der A, Kelemen L, Fabian L, Taneva S, Fodor E, Pali T, et al.
J Phys Chem B
. 2007 Apr;
111(19):5344-50.
PMID: 17458989
A phenomenological theory of salt-induced Hofmeister phenomena is presented, based on a relation between protein solubility in salt solutions and protein-water interfacial tension. As a generalization of previous treatments, it...
6.
Toth-Boconadi R, Der A, Taneva S, Keszthelyi L
Biophys J
. 2006 Jan;
90(7):2651-5.
PMID: 16399840
The L intermediate of bacteriorhodopsin was excited, and its electrical response was measured. Two positive components were found in it with respect to the direction of proton pumping: an unresolved...
7.
Der A, Keszthelyi L
Biochemistry (Mosc)
. 2001 Dec;
66(11):1234-48.
PMID: 11743868
The function of bacteriorhodopsin in Halobacterium salinarum is to pump protons from the internal side of the plasma membrane to the external after light excitation, thereby building up electrochemical energy....
8.
Neagu A, Neagu M, Der A
Biophys J
. 2001 Aug;
81(3):1285-94.
PMID: 11509345
The Hofmeister effect consists in changes of protein solubility triggered by neutral electrolyte cosolutes. Based on the assumption that salts cause stochastic fluctuations of the free energy barrier profiles, a...
9.
Toth-Boconadi R, Der A, Taneva S, Tuparev N, Keszthelyi L
Eur Biophys J
. 2001 Jun;
30(2):140-6.
PMID: 11409465
The effects of glycyl-glycine and bis-trispropane buffers on the light-excited electric signals due to proton motion in the molecule were studied for the bacteriorhodopsin (bR) mutants D38R, D96N, E204Q, R227Q,...
10.
Toth-Boconadi R, Der A, Keszthelyi L
Biophys J
. 2000 May;
78(6):3170-7.
PMID: 10827993
Buffers change the electric signals of light-excited bacteriorhodopsin molecules in purple membrane if their concentration and the pH of the low-salt solution are properly selected. "Positive" buffers produce a positive...