pH-induced protonation of lysine in aqueous solution causes chemical shifts in X-ray photoelectron spectroscopy.

pH-induced protonation of lysine in aqueous solution causes chemical shifts in X-ray photoelectron spectroscopy. Research Abstract Details 

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pH-induced protonation of lysine in aqueous solution causes chemical shifts in X-ray photoelectron spectroscopy. Abstract Text:

Dirk Nolting,Emad F Aziz,Niklas Ottosson,Manfred Faubel,Ingolf V Hertel,Bernd Winter,Dirk Nolting,Emad F Aziz,Niklas Ottosson,Manfred Faubel,Ingolf V Hertel,Bernd Winter,

We demonstrate the applicability of X-ray photoelectron spectroscopy to obtain charge- and site-specific electronic structural information of biomolecules in aqueous solution. Changing the pH of an aqueous solution of lysine from basic to acidic results in nitrogen 1s and carbon 1s chemical shifts to higher binding energies. These shifts are associated with the sequential protonation of the two amino groups, which affects both charge state and hydrogen bonding to the surrounding water molecules. The N1s chemical shift is 2.2 eV, and for carbon atoms directly neighboring a nitrogen the shift for C1s is approximately 0.4 eV. The experimental binding energies agree reasonably with our calculated energies of lysine(aq) for different pH values.

pH-induced protonation of lysine in aqueous solution causes chemical shifts in X-ray photoelectron spectroscopy. Publishing Authors By Initials

D Nolting,EF Aziz,N Ottosson,M Faubel,IV Hertel,B Winter,D Nolting,EF Aziz,N Ottosson,M Faubel,IV Hertel,B Winter,

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pH-induced protonation of lysine in aqueous solution causes chemical shifts in X-ray photoelectron spectroscopy. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of the American Chemical Society

VOLUME: 129

Page Numbers: 14068-73

Journal Abbreviation: J. Am. Chem. Soc.

ISSN: 0002-7863

DAY: 20

MONTH: 10

YEAR: 2007

pH-induced protonation of lysine in aqueous solution causes chemical shifts in X-ray photoelectron spectroscopy. Information

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LANGUAGE: eng

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AFFILIATION: Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Strasse 2a, D-12489 Berlin, Germany. nolting@mbi-berlin.de

Country: United States

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MEDLINETA: J Am Chem Soc

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