Proton transfer in histidine-tryptophan heterodimers embedded in helium droplets.
J Chem Phys
; 142(11): 114306, 2015 Mar 21.
Article
em En
| MEDLINE
| ID: mdl-25796248
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.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Prótons
/
Triptofano
/
Hélio
/
Histidina
Idioma:
En
Ano de publicação:
2015
Tipo de documento:
Article