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

────────────────────────────────────────────────────┬───┬───┬───┬───┬───┬───┬───┬────── OR4C13
                                                    │   │   │   │   │   │   │   └────── OR4C46
                                                    │   │   │   │   │   │   └───┬────── OR4C12
                                                    │   │   │   │   │   │       └────── OR4C45
                                                    │   │   │   │   │   └───┬────── OR4C6
                                                    │   │   │   │   │       └────── OR4C5
                                                    │   │   │   │   └───┬────── OR4C3
                                                    │   │   │   │       └────── OR4C15
                                                    │   │   │   └───┬───┬───┬────── OR4A5
                                                    │   │   │       │   │   └────── OR4A16
                                                    │   │   │       │   └───┬────── OR4A4
                                                    │   │   │       │       └────── OR4A47
                                                    │   │   │       └────── OR4A15
                                                    │   │   └───┬────── OR4C11
                                                    │   │       └────── OR4C16
                                                    │   └───┬───┬────── OR4X2
                                                    │       │   └────── OR4X1
                                                    │       └────── OR4B1
                                                    └───┬───┬────── OR4S2
                                                        │   └────── OR4P4
                                                        └────── OR4S1