Counterion displacement in the molecular evolution of the rhodopsin family
Nature Publishing Group
Nature Archives 1869 - 2009
[Auszug] The counterion, a negatively charged amino acid residue that stabilizes a positive charge on the retinylidene chromophore, is essential for rhodopsin to receive visible light. The counterion in vertebrate rhodopsins, Glu113 in the third transmembrane helix, has an additional role as an ...
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