Title
Computational prediction of ion permeation characteristics in the glycine receptor modified by photo-sensitive compounds.
Abstract
We conduct computational analyses of ion permeation characteristics in a model glycine receptor (GlyR) modified by photo-sensitive compounds. In particular, we consider hypothetical attachment to the channel of charge-neutral chemical groups which can be photo-activated by shining light of an appropriate wavelength on the system. After illumination, the attached molecules become charged via a photodissociation process or excited into a charge-separated state (thus generating a significant electric dipole). We carry out Brownian Dynamics simulations of ion flow through the channel in the presence of the additional charges generated in this fashion. Based on these calculations, we predict that photo-activation of appropriately positioned photo-sensitive compounds near the channel mouth can significantly modify the rate of ion permeation and the current rectification ratio. Possible implications for GlyR-based device designs are briefly discussed.
Year
DOI
Venue
2008
10.1007/s10822-008-9200-0
Journal of computer-aided molecular design
Keywords
Field
DocType
Engineering glycine receptor,Brownian dynamics,Computational modeling,Ion permeation,Photo-sensitive compound
Molecule,Computational chemistry,Chemistry,Brownian dynamics,Photodissociation,Permeation,Static electricity,Glycine receptor,Ion,Dipole
Journal
Volume
Issue
ISSN
22
8
0920-654X
Citations 
PageRank 
References 
0
0.34
0
Authors
4
Name
Order
Citations
PageRank
Mary Hongying Cheng191.51
Robert D. Coalson200.34
Michael Cascio300.68
Maria Kurnikova4101.33