Response to Comment on 'A G Protein–Coupled Receptor Is a Plasma Membrane Receptor for the Plant Hormone Abscisic Acid'

Our study provided experimental evidence that GCR2 is a membrane-associated abscisic acid receptor that interacts with the G protein α subunit GPA1 in Arabidopsis . Although we cannot rule out GCR2 as a lanthionine synthetase homolog, our data indicate that it may define a new type of nonclassical G protein–coupled receptor.