BioMAX is the first X-ray macromolecular crystallography beamline of MAX IV Laboratory, which is in user operations since 2017. It is a state-of-the-art resource accommodating multiple cutting edge experimental possibilities. The design goal for BioMAX was to create a stable and reliable beamline that is user friendly. The beamline experiment set-up is highly automated, in terms of both sample handling hardware and data analysis, including feedback on the data collection.

The X-ray beam focus is 20 x 5 μm2 at the sample position with a photon flux of 2 x 1013 ph/s at 500 mA ring current. The operational energy range of the beamline is 5–25 keV. Alternatively, using aperture overfilling it is possible to obtain a stable 5 x 5 μm2 beam at the sample position. Due to its extensive energy tunability, BioMAX is an ideal source for de novo phasing using the anomalous signal of heavy elements. Beam defocusing creates a practically parallel beam, which can be used to resolve extremely large unit cells > 1000 Å at high resolution. Due to its small beam cross-section and optional parallel beam, BioMAX is an optimal experimental set-up for X-ray crystallography using microcrystals and ultra large unit cells. Initial synchrotron based serial crystallography (SSX) experiments using an High-Viscosity-Extrusion injector designed and built by Bruce Doak (MPI-Heidelberg) have been carried out.

Techniques MX, SAD, SSAD, SSX, Atomic resolution data collection, Large sample ensemble screening, In situ crystal diffraction
Beam Size 20 x 5 μm2
Energy Range 5-25 keV
Time Scales Seconds
Samples Single crystal (1 - 100 μm)

2018-12-20

Fragment screening project gets a green-light from Vetenskapsrådet

Uwe Müller and Gustavo Lima were recently awarded funding from Vetenskapsrådet for their project FragMAX. This project runs in collaboration with two Swedish companies, Astra Zeneca and SAROMICS BioStructures and the Lund University Protein Production Platform LP3. FragMAX aims to establish a fragment screening facility at MAX IV, which is an important tool for industrial