Structural characterization of core-bradavidin in complex with biotin
Fig 3
Interactions of Asp107 of core-bradavidin (orange; bold labels) and the equivalent Asn118 of chicken Avd (cyan; labels in brackets).
Seven H-bonds stabilize the side chain of Asp107 in core-bradavidin (a), whereas only five H-bonds stabilize the equivalent Asn118 in chicken Avd (b). Non-carbon atom colouring as in Fig 2. H-bonds are drawn as grey dashed lines for core-bradavidin (a) and blue dashed lines for chicken Avd (b); distances in Ångströms.