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CONFORMATIONAL QUANTUM SUPERPOSITION. "Recent studies, however, have shown the possibility of quantum superposition in bacteriorhodopsin, which is the equivalent light-detecting protein system to rhodopsin." https://lnkd.in/esUjh8H View in LinkedIn

HAPPY CHRISTMAS to my friends and colleagues. View in LinkedIn

SKEPTIC. "Although quantum biology is usually associated with non-trivial quantum properties, as evidenced in the complexities of photosynthesis and avian magnetoreception, evidence of quantum superposition effects in the natural retina is still lacking. It is proposed that in a large protein, such as rhodopsin, random fluctuations among the molecular degrees of freedom are expected to cancel out any superposition effects." https://lnkd.in/eTtJ_KE View in LinkedIn

MORE ON TUNNELING IN SMELL. https://lnkd.in/eRUdQZj View in LinkedIn

QUANTUM PHOTOISOMERISM. "The remarkable speed and efficiency of photoisomerization is thought to depend on trivial quantum effects that shape the mechanical positioning of electronic states of the retinal molecule; however, conceivably, quantum effects, particularly coherence, could play a role in phototransduction." https://lnkd.in/eTtJ_KE View in LinkedIn

TUNNELING IN SMELL. "Turin proposed a mechanism in which phonon-assisted inelastic tunnelling of an electron from a donor to an acceptor mediated by the odorant molecule gives a further level of selectivity to the process. A recent model proposed by Brookes expanded on this idea, and presented evidence that such a mechanism fits the observed features of smell." https://lnkd.in/eRUdQZj View in LinkedIn

BLINDING SPEED OF PHOTOISOMERISM. "A femtosecond is the SI unit of time equal to 10(−15) or 1/1,000,000,000,000,000 of a second. That is one quadrillionth, or one millionth of one billionth, of a second. For context, a femtosecond is to a second as a second is to about 31.71 million years." https://lnkd.in/eA4zGTC View in LinkedIn

QUANTUM SCENTS. "Our sense of smell relies on sensitive, selective atomic-scale processes that occur when a scent molecule meets specific receptors in the nose. One novel proposal suggests receptors are actuated by inelastic electron tunneling from a donor to an acceptor mediated by the odorant, and provides critical discrimination. We find the proposal consistent both with the underlying physics and with observed features of smell." https://lnkd.in/e_EKNyK View in LinkedIn

"PHOTOISOMERISM occurs at a remarkable rapid rate of

SPECTRAL SENSES. "The evidence presented here suggests instead that olfaction, like colour vision and hearing, is a spectral sense." http://chemse.oxfordjournals.org/content/21/6/773 View in LinkedIn