title: β-(1-Azulenyl)-L-alanine--a functional probe for determination of pKa of histidine residues.
abstract: β-(1-Azulenyl)-L-alanine (AzAla) can be incorporated into the influenza A virus M2 proton channel. AzAla's sensitivity to the protonation state of the nearby histidines and the lack of environmental fluorescence dependence allow for direct and straightforward determination of histidine pKa values in ion channels.
authors: Department of Chemistry, Syracuse University, 111 College Place, Syracuse, NY 13244, USA. ikorendo@syr.edu.
authors: Pallavi M
authors: PM
authors: Gosavi
authors: Yurii S
authors: YS
authors: Moroz
authors: Ivan V
authors: IV
authors: Korendovych
mesh_terms: D000409:Alanine / Q000031:analogs & derivatives* / Q000737:chemistry; D052176:Azulenes / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D006639:Histidine / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D007473:Ion Channels / Q000737:chemistry; D008958:Models, Molecular; D012717:Sesquiterpenes / Q000737:chemistry*; D014763:Viral Matrix Proteins / Q000737:chemistry; D000086082:Viroporin Proteins
chemical_list: D000409:Alanine; D052176:Azulenes; D005456:Fluorescent Dyes; D006639:Histidine; D007473:Ion Channels; D012717:Sesquiterpenes; D014763:Viral Matrix Proteins; C488937:M2 protein, Influenza A virus; D000086082:Viroporin Proteins; C408563:acetyl-(1-azulenyl)-alanine