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Figure 1
Metal ligands were instrumental in locating the active sites of three uncharacterized proteins. Comparison of the metal-bound crystal structures of YP_164873.1 (blue), YP_555544.1 (green) and YP_556190.1 (magenta) with that of the known 3-keto-5-aminohexanoate cleavage protein (grey) reveals a similar metal-binding motif, allowing unambiguous identification of the enzyme active sites and functional classification. Hydrogen bonds are shown as dashes, water molecules as red spheres, Zn atoms as grey spheres and Ni as a blue sphere. The protein is rendered with cartoon-representation side chains and the active-site His and Asp residues are shown in ball-and-stick representation.

Journal logoSTRUCTURAL BIOLOGY
COMMUNICATIONS
ISSN: 2053-230X
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