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research article
Multiple Isomers and Protonation Sites of the Phenylalanine/Serine Dimer
Our investigation of the phenylalanine/serine (Phe/Ser) protonated dimer suggests that the intermolecular interaction between the two amino acids is more complex than could have been anticipated from previous studies of similar systems. Isomer-specific infrared (IR) spectra, rec-orded at an internal temperature of ~10 K, demonstrate the presence of at least five isomers with non-zwitterionic structures. Moreover, isotopic substitution experiments provide evidence for different protonation sites among the-se isomers.
Type
research article
Web of Science ID
WOS:000306297600001
Authors
Publication date
2012
Published in
Volume
134
Issue
27
Start page
11053
End page
11055
Peer reviewed
REVIEWED
Available on Infoscience
June 26, 2012
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