Odorant Receptor Channel
These proteins usually have about 250 -350 aas and 7 TMSs in a 2 + 2 + 2 + 1 TMS arrangement. They are found ubiquitously in bacteria, archaea and eukaryotes (Himmel et al., 2023).
1.A.69 - The Heteromeric Odorant Receptor Channel (HORC) Family1.A.151 - The Ubiquitous Insect Chemoreceptor (UICR or 7TMIC) Family
1.A.152 - The Putative Ion Channel-Receptor (PICR) Family
1.A.153 - The Putative Chemoreceptor (PCR) Family
9.B.251 - The Uncharacterized Protein from Unculturable Bacteria-5 (UPUB5) Family