Extended Data Fig. 4: Structure, linker conformation and DMF orientation in ZnGGH-3⋅(DMF) and ZnGGH-1⋅(DMF-H2O).
From: Chemical control of structure and guest uptake by a conformationally mobile porous material
ZnGGH-3⋅(DMF) is produced by treating ZnGGH-1⋅(DMF-H2O) with pure DMF. This reaction is reversible: ZnGGH-3⋅(DMF) is transformed back to ZnGGH-1⋅(DMF-H2O) after treatment with a DMF/H2O 3/1 (v/v) mixture. In both structures, the DMF molecule is hydrogen-bonded to the same proton of the terminal NH2, but its orientation changes by about 90° between structures 1 and 3. This change in DMF orientation is associated with repositioning of the terminal glycine between the two structures through conformational change of the tripeptide.
