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The University of Hong Kong

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Figure 2. Structural analysis of sorghum stilbene O-methylase (SbSOMT). A. SbSOMT (pink) shows high global structural similarity to SbCOMT (blue). SbSOMT is a unique OMT in Sorghum spp. while COMT is a common and widespread OMT enzyme. B. Close-up view of the substrate binding pocket docked with piceatannol. In SbSOMT (pink) and SbCOMT (blue), the stilbene A-ring and B-ring are positioned close to a key catalytic residue (H267/H282), respectively, for O-methylation. Images adapted from Nature Communications, 2023, doi:10.1038/s41467-023-38908-5

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