Article
Amino acids with an intermolecular proton bond as proton storage site in bacteriorhodopsin.
Proceedings of the National Academy of Sciences of the United States of America - 16 Dec 2008
Phatak Prasad, Ghosh Nilanjan, Yu Haibo, Cui Qiang, Elstner Marcus
Abstract excerpt
The positions of protons are not available in most high-resolution structural data of biomolecules, thus the identity of proton storage sites in biomolecules that transport proton is generally difficult to determine unambiguously. Using combined quantum mechanical/molecular mechanical computations, we demonstrate that a pair of conserved glutamate residues (Glu 194/204) bonded by a delocalized proton is the...
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