Everything about The Retinene totally explained
The
Retinenes (Retinene
1 and Retinene
2) are chemical derivatives of the dietary supplement
vitamin A (see
retinol) formed through
oxidation reactions.
Retinene
1 is better known as
retinaldehyde or simply
retinal and is fundamental in the transduction of light into visual signals in the
photoreceptor level of the
retina (known as the
visual cycle). Retinene
2 is more formally known as
dehydroretinaldehyde.
The energy of impinging
photons will convert retinaldehyde from an 11-cis
isomer into an all-trans form. In the retina, this conversion induces a conformational change in the surrounding
photopsin protein pigment, leading to signaling through the
G protein transducin. Retinaldehyde also forms a part of
bacteriorhodopsin, a light-induced
proton pump found in some
archaea.
Experimentally, it's possible to replace 11-cis retinaldehyde by perfusing retinal tissue preparations with retinaldehyde derivatives. Selective modification of the retinaldehyde structure, particularly the density of electrons in the
π-orbitals, can lead to insights into the interaction between the retinaldehyde moiety and the surrounding pigment protein.
Further Information
Get more info on 'Retinene'.
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