Receptor for eicosanoids and polyunsaturated fatty acids such as 5-oxo-6E,8Z,11Z,14Z-eicosatetraenoic acid (5-OXO-ETE), 5(S)- hydroperoxy-6E,8Z,11Z,14Z-eicosatetraenoic acid (5(S)-HPETE) and arachidonic acid. Seems to be coupled to the G(i)/G(o), families of heteromeric G proteins. {ECO:0000269|PubMed:12065583, ECO:0000269|PubMed:12606753}. This is the function of OXER1 (oxoeicosanoid receptor 1, Ensembl gene identifier ENSG00000162881).