Salt Bridge Stabilization of Charged Zwitterionic Arginine Aggregates in the Gas Phase
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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Negatively-charged helices in the gas phase.
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The gas-phase structures of protonated and alkali metal cationized arginine (Arg) and arginine methyl ester (ArgOMe) are investigated with infrared spectroscopy and ab initio calculations. Infrared spectra, measured in the hydrogen-stretch region, provide compelling evidence that arginine changes from its nonzwitterionic to zwitterionic form with increasing metal ion size, with the transition i...
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ژورنال
عنوان ژورنال: Journal of the American Chemical Society
سال: 2001
ISSN: 0002-7863,1520-5126
DOI: 10.1021/ja003105a