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. 2013 Jul 11;114(1):194–232. doi: 10.1021/cr400107q

Figure 27.

Figure 27

RPE65 active site cavity. The cavity (gray mesh) is predominantly lined by hydrophobic residues that facilitate retinyl ester uptake from the membrane. The cavity passes by the catalytic iron and terminates deep inside the enzyme core. Residues colored green have been shown through mutagenesis studies to be important in maintaining the 11-cis specificity of RPE65 isomerase activity.