Figure 2 | Scientific Reports

Figure 2

From: Structure and mechanism of potent bifunctional β-lactam- and homoserine lactone-degrading enzymes from marine microorganisms

Figure 2

Active site structures of MIM-1 (left) and SAM-1 (right), including Gln157 in both enzymes and Arg46 (for MIM-1 only), which may play an important role in substrate binding. In MIM-1, a molecule of citrate (a component of the crystallization solution) is present in the active site; its oxygen atoms O1, O3 and O4 are replaced by water molecules (W1-W3) in the structure of SAM-1.

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