Active-site models for complexes of quinolinate synthase with substrates and intermediates

Structural studies of quinolinate synthase suggest a model for the enzyme–substrate complex and an enzyme–intermediate complex with a [4Fe–4S] cluster.

Complex structure of type VI peptidoglycan muramidase effector and a cognate immunity protein

The structure of the Tse3–Tsi3 complex associated with the bacterial type VI secretion system of P. aeruginosa has been solved and refined at 1.9 Å resolution. The structural basis of the recognition of the muramidase effector and its inactivation by its cognate immunity protein is revealed.

Structural basis for a hand-like site in the calcium sensor CatchER with fast kinetics

High-resolution crystal structures of the designed calcium sensor CatchER revealed snapshots of calcium and gadolinium ions binding within the designed site in agreement with its fast kinetics.