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

────────────────────────────────────────────┬───┬───┬───┬───┬────── OR5K1
                                            │   │   │   │   └────── OR5K4
                                            │   │   │   └────── OR5K3
                                            │   │   └────── OR5K2
                                            │   └───┬───┬───┬────── OR5H2
                                            │       │   │   └────── OR5AC2
                                            │       │   └───┬───┬────── OR5H1
                                            │       │       │   └────── OR5H15
                                            │       │       └────── OR5H14
                                            │       └────── OR5H6
                                            └───┬───────┬────── OR9G4
                                                │       └───┬────── OR9G1
                                                │           └────── OR9G9
                                                └────── OR9K2