Research

Seeing enzymes atom by atom

X-ray crystallography shows us enzymes in atomic detail, down to ultra-high, sub-ångström resolution. Structures guide how we engineer enzymes, explain how they recognize their substrates, and reveal how they work.

A structure turns a sequence into a mechanism. We solve crystal structures of the enzymes and receptors we study, such as lactonases, phosphotriesterases, phosphate-binding proteins and quorum-sensing receptors.

We push X-ray diffraction to ultra-high, sub-ångström resolution. At that level every atom is resolved, including hydrogen atoms, and details such as the geometry of a short hydrogen bond can be read directly from the electron density map.

Structures feed directly into protein engineering: they show which positions to change, and they check the result. We also build free, open tools that make crystallographic data processing easier to learn and to run.

Potential applications

  • Enzyme design
Stained-glass mosaic of a gold X-ray beam striking a small green crystal, and scattering into rings of glowing diffraction spots on deep blue glass.
An X-ray beam meets a crystal and scatters into a pattern of spots, from which we compute the structure.
Round stained-glass mosaic of an electron density map, with blue mesh around the atoms of small molecules, drawn as gold sticks, and patches of green glass, on pale violet glass.
Artistic representation of electron density at ultra-high, sub-ångström resolution. At this resolution each atom is resolved, including hydrogen atoms.