Site | PP | Location | Notes on Opsin Structure–Function |
---|---|---|---|
22 | 0.90 | N-term | Â |
24 | 0.81 | N-term | Â |
27 | 0.91 | N-term | Â |
31 | 0.75 | N-term | Â |
36 | 0.86 | N-term / TM1 | RH2 spectral tuning site [80]. Situated on edge of retinal uptake/release channel [76]. |
56 | 0.90 | TM1 | Â |
99 | 0.91 | TM2 | Â |
107 | 0.96 | E1 | Adjacent to RH2 spectral tuning site (site 108) [80]. |
109 | 0.86 | E1 / TM3 | Adjacent to RH2 spectral tuning site (site 108) [80]. Adjacent to cysteine bond site (site 110) [82]. |
112 | 0.80 | TM3 | RH2 spectral tuning site [80]. Adjacent to opsin counterion (site 113) [83]. |
122 | 0.85 | TM3 | Major RH2 spectral tuning site [78]. Also influences G protein activation efficiency, active-state decay rate, and visual pigment regeneration rate [84]. |
149 | 0.77 | C2 / TM4 | |
158 | 0.86 | TM4 | Â |
162 | 0.94 | TM4 | Â |
165 | 0.79 | TM4 | Possible RH2 spectral tuning site [80]. |
179 | 0.88 | E2 | Â |
213 | 0.75 | TM5 | RH2 spectral tuning site [80]. |
214 | 0.89 | TM5 | Adjacent to RH2 spectral tuning site (site 213) [80]. |
218 | 0.86 | TM5 | RH2 spectral tuning site [80]. |
263 | 0.90 | TM6 | Â |
273 | 0.85 | TM6 | |
277 | 0.90 | TM6 / E3 | Â |
282 | 0.80 | E3 | Â |
284 | 0.75 | E3 | Â |
290 | 0.93 | TM7 | Â |
304 | 0.97 | TM7 | Â |
335 | 0.79 | C-term |