Proton transfer in histidine-tryptophan heterodimers embedded in helium droplets

Bruno Bellina; Daniel J. Merthe; Vitaly V. Kresin

doi:10.1063/1.4914902

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arXiv · 1503.05585

Proton transfer in histidine-tryptophan heterodimers embedded in helium droplets

Bruno Bellina·Daniel J. Merthe·Vitaly V. Kresin

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Abstract

We used cold helium droplets as nano-scale reactors to form and ionize, by electron bombardment and charge transfer, aromatic amino acid heterodimers of histidine with tryptophan, methyl-tryptophan, and indole. The molecular interaction occurring through an N-H...N hydrogen bond leads to a proton transfer from the indole group of tryptophan to the imidazole group of histidine in a radical cationic environment.

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Bruno Bellina, Daniel J. Merthe, Vitaly V. Kresin. 2015-03-18. Proton transfer in histidine-tryptophan heterodimers embedded in helium droplets. https://doi.org/10.1063/1.4914902

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