Table 4.
Well-characterized bacterial photoreceptor families.
| Type | Chromophore | Spectral sensitivity | Reference |
|---|---|---|---|
| Phy | Linear tetrapyrrole bilin | Mainly red/far-red light photoreceptors (Cyanobacteriochromes have a broader spectrum) | Kraiselburd et al. (2017) |
| LOV | FMN/FAD/riboflavin | Blue light | Herrou and Crosson (2011) |
| BLUF | FAD | Blue light | Kraiselburd et al. (2017) |
| PYP | p-coumaric acid | Blue/UV-A light | Haker et al. (2003), Purcell and Crosson (2008) |
| Rhodopsin | Retinal | Visible region (400–700 nm) | Ernst et al. (2014) |
| Cryptochrome | FAD/pterin/flavin antenna | Blue/UV-A light | Geisselbrecht et al. (2012) |
| OCP | Carotenoid | Blue–green light | Muzzopappa and Kirilovsky (2020) |