An H-bond between two residues from different loops of the acetylcholine binding site contributes to the activation mechanism of nicotinic receptors. Grutter Thomas, de Carvalho Lia Prado, Le Novère Nicolas, Jean Corringer Pierre, Edelstein Stuart, Changeux Jean-Pierre. The EMBO Journal. 2003;22:1990–2003. doi: 10.1093/emboj/cdg197.
In the above paper, on page 1991 (paragraph 1, line 13), S147::A191 was incorrectly printed as S14::A191. The publishers would like to apologize for this error and for any confusion caused.