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

────────────────────────────────────────────────────────┬───┬────── OR4L1
                                                        │   └───┬───┬───┬───┬───┬───┬────── OR4K15
                                                        │       │   │   │   │   │   └────── OR4K5
                                                        │       │   │   │   │   └───┬────── OR4K14
                                                        │       │   │   │   │       └────── OR4K13
                                                        │       │   │   │   └───┬────── OR4K3
                                                        │       │   │   │       └────── OR4K2
                                                        │       │   │   └────── OR4K1
                                                        │       │   └────── OR4K17
                                                        │       └───┬───┬───┬───────────┬────── OR4F3
                                                        │           │   │   │           └────── OR4F21
                                                        │           │   │   └────── OR4F15
                                                        │           │   └────── OR4F6
                                                        │           └───┬───┬────── OR4F4
                                                        │               │   └────── OR4F17
                                                        │               └────── OR4F5
                                                        └───┬───┬───┬────── OR4D5
                                                            │   │   └───┬────── OR4Q2
                                                            │   │       └────── OR4Q3
                                                            │   └───┬───┬───┬───┬────── OR4D11
                                                            │       │   │   │   └────── OR4D10
                                                            │       │   │   └────── OR4D9
                                                            │       │   └────── OR4D6
                                                            │       └───┬────── OR4D1
                                                            │           └────── OR4D2
                                                            └───┬───┬───┬────── OR4N4
                                                                │   │   └────── OR4N2
                                                                │   └────── OR4N5
                                                                └───┬────── OR4M1
                                                                    └────── OR4M2