Receptors

Major nodes: ClassI | OR1/3/7 | OR2/13 | OR2M/T/V | OR4/12 | OR5/8/9 | OR5A/AN | OR6/10/11 | OR10D/G/S | OR14 | OR51/52 | Schiff6

────────────────────────────────────────────────────────┬───┬───┬───┬───┬───┬────── OR6B2
                                                        │   │   │   │   │   └────── OR6B3
                                                        │   │   │   │   └────── OR6B1
                                                        │   │   │   └───┬────── OR6A2
                                                        │   │   │       └───┬────── OR6Y1
                                                        │   │   │           └────── OR6P1
                                                        │   │   └────── OR6Q1
                                                        │   └───┬───┬───┬───┬────── OR6K2
                                                        │       │   │   │   └────── OR6K3
                                                        │       │   │   └────── OR6K6
                                                        │       │   └───┬────── OR6N1
                                                        │       │       └────── OR6N2
                                                        │       └────── OR6F1
                                                        └────── OR6X1