1278942 MT1 melatonin receptor 1 89 3543089 MTNR1A melatonin receptor 1A 74 3077223 MT1R melatonin 1 receptor 4 1273233 MR-1 melatonin receptor 1 1 3088451 MTR1 melatonin receptor 1 1 3549499 mtnr1 melatonin receptor 1 1