Tag Archives: rhodopsin

Functional significance of interhelical interactions between aspartic acid and cysteine residues in microbial rhodopsin

proton-pump type microbial rhodopsins

Microbial rhodopsins are photoreceptive seven-transmembrane proteins that contain all-trans retinal as a chromophore. Upon photon absorption, these proteins undergo a cycling photoreaction, where first the initial trans-to-cis isomerization of retinal induced by illumination leads to the formation

Cholesterol: the eyes have it

Cell membranes are a complex mosaic of lipids and proteins. The membrane phospholipids are arranged in a bilayer with their polar heads interacting with the surrounding water and their hydrocarbon tails forming a hydrophobic core. Membrane proteins