Brain Transcriptome Database (BrainTx)http://rdf.ncbi.nlm.nih.gov/pubmed/

Y Tom. Tang, et.al., PAQR proteins: a novel membrane receptor family defined by an ancient 7-transmembrane pass motif., Journal of molecular evolution, 2005, 61
http://rdf.ncbi.nlm.nih.gov/pubmed/16044242