PHARMACOLOGY. For the article “Positive allosteric modulators of
metabotropic glutamate 1 receptor: Characterization, mechanism of
action, and binding site,” by Frédéric
Knoflach, Vincent Mutel, Synèse Jolidon, James N. C. Kew,
Pari Malherbe, Eric Vieira, Jürgen Wichmann, and John A.
Kemp, which appeared in number 23, November 6, 2001, of
Proc. Natl. Acad. Sci. USA
(98, 13402–13407; First Published October 23, 2001;
10.1073/pnas.231358298), due to a printer's error, several
amino acid codes are missing from Fig.
4B, which appears correctly
below.