| Gene | Description | Domains | Gene lists |
|---|---|---|---|
| Hhon_g03157.t1 | — | STALD, Tetraspanin, UPF0182 | — |
| Hhon_g04189.t1 | — | 7tm_1, 7TM_GPCR_Srd, ARM_TBCD, Rrn7_cyclin_C, UPF0182 | Signalling |
| Hhon_g06889.t1 | prostaglandin E receptor 1 (subtype EP1) | 7tm_1, 7TM_GPCR_Srx, Beta-prop_BBS7, DUF6338, OppC_N, UPF0182 | Signalling |