Side chain to main chain hydrogen bonds stabilize a polyglutamine helix in a transcription factor

Escobedo A; Topal B; Kunze M; Aranda J; Chiesa G; Mungianu D; Bernardo-Seisdedos G; Eftekharzadeh B; Gairí M; Pierattelli R; Felli I; Diercks T; Millet O; García J; Orozco M; Crehuet R; Lindorff-Larsen K; Salvatella X