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Fig. 2 | BMC Biology

Fig. 2

From: Characterization of a novel type of carbonic anhydrase that acts without metal cofactors

Fig. 2

Structures of COG4337 proteins. a, b Dimeric structures of Bn86287 and all2909 are displayed as a ribbon diagram. A bicarbonate molecule (yellow and red spheres) is located inside the cone-shaped barrel. c Structural alignment of the four COG4337 domains. d Cross-sections of all2909 represent a bent finger-like cavity (transparent gay) containing a bicarbonate (BCT) and residues lining the cavity. e, f Active site overlays of the four COG4337 domains with bicarbonate (BCT) and iodide ion (IOD), respectively. As a difference, the position of Lys180 in all2909 is occupied by Tyr224/388/552 in Bn86287. g Dimeric structure of an uncharacterized protein of Xanthomonas campestris (PDB ID: 3H51). All images were prepared with PyMOL v. 2.3.3 (Schrödinger)

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