Prosite -Bacterial Rhodopsins
Consensus pattern: BACTERIAL_OPSIN_1
R-Y-x-[DT]-W-x-[LIVMF]-[ST]-T-P-[LIVM](3)
Consensus pattern: BACTERIAL_OPSIN_RET
[FYIV]-x-[FYVG]-[LIVM]-D-[LIVMF]-x-[STA]-K-
x(2)-[FY]
K is the retinal binding site