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Retinal (also known as retinaldehyde) is a polyene chromophore. It binds to opsin proteins and forms the chemical basis of visual phototransduction, the light-detection stage of visual perception (vision).
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vitamin opsins carotenoids use forms visual acid also light opsin form all-trans-retinal rhodopsin lysine chromophore retinol cells called animals convert
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Retinal | is a | precursor of the other forms of vitamin A | 0.90 | text |
| Retinal | is a | result of convergent evolution | 0.90 | text |
| insects | instance of | may both be produced from retinal.Invertebrates | 0.80 | text |
| squid use hydroxylated forms of retinal in their visual systems | instance of | may both be produced from retinal.Invertebrates | 0.80 | text |
| which derive from conversion from other xanthophylls | instance of | may both be produced from retinal.Invertebrates | 0.80 | text |
| bacteriorhodopsin | instance of | Microbial rhodopsinsAll-trans-retinal is also an essential component of microbial opsins | 0.80 | text |
| channelrhodopsin | instance of | Microbial rhodopsinsAll-trans-retinal is also an essential component of microbial opsins | 0.80 | text |
| and halorhodopsin | instance of | Microbial rhodopsinsAll-trans-retinal is also an essential component of microbial opsins | 0.80 | text |
| which are important in bacterial | instance of | Microbial rhodopsinsAll-trans-retinal is also an essential component of microbial opsins | 0.80 | text |
| archaeal anoxygenic photosynthesis | instance of | Microbial rhodopsinsAll-trans-retinal is also an essential component of microbial opsins | 0.80 | text |
| Retinal | related to External links | First Steps | 0.60 | section |
| Retinal | related to External links | Vision | 0.60 | section |
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