Nature Reviews Neuroscience 10, 701–712 (2009)

On page 708 of the above article, the word 'deuterostomes' was incorrectly used instead of 'protostomes'. The sentence should have read: “Protostomes have single NR2 and Dlg genes whereas chordates have four paralogues of each, thus the number of potential chordate NR2–Dlg interactions has expanded to be 12-fold greater67 (FIG. 4b).”