Fig. 4 | Nature Communications

Fig. 4

From: Molecular basis of an agarose metabolic pathway acquired by a human intestinal symbiont

Fig. 4

Molecular basis of the exo-acting α-1,3-l-neoagarooligosaccharide hydrolase GH117B. a Structure of the GH117B dimer shown in cartoon format with each monomer color ramped from N terminus (blue) to C terminus (red). b Surface representation of chain A (gray) and chain B (cyan) of the GH117B catalytic pocket. Key residues are labeled (blue) and N2 digestion products GAL and AHG are shown in stick format (pink). c Structural alignment of GH117B (blue) in complex with GAL and AHG (pink) with BpGH117 (yellow) in complex with N2 (gray) (pdb entry 4AK547). Numbering for conserved GH117B and BpGH117 residues is shown, and when different, indicated in brackets for the latter. The BpGH117 catalytic water is represented as a red nonbonded sphere

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