Cover Caption

About the cover: Homology models of the agonist binding domain of the wild-type α4β2 (A) and Dα2β2 (B) nAChRs and their T77R;E79V mutants (C, α4β2 nAChR; D, Dα2β2 nAChRs) bound by imidacloprid constructed using the crystal structure (PDB code 1UW6) of the acetylcholine binding protein (AChBP) from snail Lymnaea stagnalis. See the article by Shimonura et al. on page 1255 of this issue.