Fig. 16.

[TeW₆O₂₄]⁶⁻ bound to hen egg white lysozyme in two different orientations. (A) Two lysozyme monomers are crosslinked via the flat site of [TeW₆O₂₄]⁶⁻ and thus are very close to each other (8.0 Å). (B) In this case the [TeW₆O₂₄]⁶⁻ lies horizontally between both monomers leading to a larger distance between them (14.0 Å). This shows that the shape and the orientation of the POM can lead to various binding modes and thus could induce versatile crystal packing. The protein is shown as differently colored cartoons to distinguish different monomers. Interacting side chains are depicted as sticks (color code: carbon atoms = green/cyan, nitrogen atoms = blue) with black dashes indicating the interaction with the [TeW₆O₂₄]⁶⁻. The polyoxotungstate is illustrated as ball and stick (color code: tellurium atom = brown, tungsten atoms = marine, oxygen atoms = red).