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Fig. 2 | BMC Biology

Fig. 2

From: High-resolution structure of the amino acid transporter AdiC reveals insights into the role of water molecules and networks in oligomerization and substrate binding

Fig. 2

Water molecules in the substrate-binding site. A Overall structure of AdiC viewed from the periplasmic side. B Enlargement of the box in A. Crystallographic bulk (gray spheres) and hydration (orange spheres) water molecules are displayed. Interactions between hydration water molecules with proteinaceous amino acids (distances ≤ 3.2 Å) are shown as dashed lines. C Perspective in B after ~ 60° rotation of the viewing angle around the x-axis. AdiC monomers are represented as transparent ribbons and are colored in blue and yellow. Amino acids are colored in blue (main chain interactions) and cyan (side chain interactions) and are labeled using the one letter code. In addition, main chain interactions with the carbonyl oxygen or nitrogen atom are labeled with (O) or (N)

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