Cooperative Salt Bridge Stabilization of Gas-Phase Zwitterions in Neutral Arginine Clusters
نویسندگان
چکیده
منابع مشابه
Salt bridge stabilization of charged zwitterionic arginine aggregates in the gas phase.
The discovery of several new unusually stable aggregates of arginine that are intermolecularly bound by salt bridges is reported. Quadrupole ion-trap mass spectrometry provides evidence for the stability of arginine in the zwitterionic state, where the protonated guanidinium group of one arginine interacts strongly with the carboxylate of another to form stable noncovalent complexes, coordinate...
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The structures of cationized arginine complexes [Arg + M]+, (M = H, Li, Na, K, Rb, Cs, and Ag) and protonated arginine methyl ester [ArgOMe + H]+ have been investigated in the gas phase using calculations and infrared multiple-photon dissociation spectroscopy between 800 and 1900 cm-1 in a Fourier transform ion cyclotron resonance mass spectrometer. The structure of arginine in these complexes ...
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ژورنال
عنوان ژورنال: The Journal of Physical Chemistry A
سال: 2001
ISSN: 1089-5639,1520-5215
DOI: 10.1021/jp013205i