Rhodopsin

<p>Rhodopsin, also known as visual purple, is a <a href="/facts/Protein/Jxmagu3E">protein</a> encoded by the <i>RHO</i> <a href="/facts/Gene/e1swwPY6">gene</a> and a <a href="/facts/G-protein-coupled_receptor/0arUMkQc">G-protein-coupled receptor</a> (GPCR). It is a <a href="/facts/Light/jeofpMn4">light</a>-sensitive <a href="/facts/Receptor_protein/tjTAC76a">receptor protein</a> that triggers <a href="/facts/Visual_phototransduction/qY3Y6LHf">visual phototransduction</a> in <a href="/facts/Rod_cell/mNd9Sf1E">rod cells</a>. Rhodopsin mediates <a href="/facts/Scotopic_vision/bbgS94wQ">dim light vision</a> and thus is extremely sensitive to light.  When rhodopsin is exposed to light, it immediately <a href="/facts/Photobleaching/bCzDH8c1">photobleaches</a>. In humans, it is fully regenerated in about 30 minutes, after which the rods are more sensitive. Defects in the rhodopsin gene cause eye diseases such as <a href="/facts/Retinitis_pigmentosa/eIbETPzm">retinitis pigmentosa</a> and <a href="/facts/Congenital_stationary_night_blindness/JeS9U9Ta">congenital stationary night blindness</a>.
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Rhodopsin open-in-new

Rhodopsin