Receptors

Major nodes: Class I | OR1/3/7 | OR2/13 | OR4 | OR5/8/9 | OR6/10/11 | OR10D/G/S | OR12 | OR14-like | Olfactory TAARs
────────────────────────────────────────────────────────────────────┬───┬───┬───┬───┬────── OR4K15
                                                                    │   │   │   │   └────── OR4K5
                                                                    │   │   │   └───┬────── OR4K14
                                                                    │   │   │       └────── OR4K13
                                                                    │   │   └───┬────── OR4K3
                                                                    │   │       └────── OR4K2
                                                                    │   └────── OR4K1
                                                                    └────── OR4K17