Yin S, Noetzel MJ, Johnson KA, Zamorano R, Jalan-Sakrikar N, Gregory KJ, Conn PJ, Niswender CM (2014) Selective actions of novel allosteric modulators reveal functional heteromers of metabotropic glutamate receptors in the CNS. J Neurosci 34(1):79-94. doi: 10.1523/JNEUROSCI.1129-13.2014 PMID: 24381270
Summary: The eight mGlu receptor subtypes that have been discovered have been thought to function only as homodimers. Although recent studies have suggested that these receptors can form heterodimers in vitro, this has not been demonstrated in vivo. Using a variety of methods, including western blots, coimmunoprecipitation, thallium flux assays, transient transfections, and whole cell patch recordings the authors show that mGlu2 and mGlu4 form a hetero-complex in both rat and mouse tissues. An anti-mGluR2 (Cat. #AB-N32) was used in coimmunoprecipitation.