Crystallisation & X‑Ray


The Crystallisation and X-ray facilities support macromolecular crystallography at the LMB. These facilities provide guidance on the requirements for protein samples to crystallise, through to the determination and analysis of crystal structures.

Protein X-ray crystallography was invented during the early days of the LMB and uses X-ray diffraction patterns to determine the 3D arrangement of the atoms making up the crystals. Given that biological macromolecules can contain very many atoms, specialised methods are needed, including very powerful X-ray beams from synchrotrons and computer algorithms that allow large structures to be determined.

Birefringent lysozyme protein crystals, exhibiting rainbow colors, viewed under polarized light microscopy with a 200 µm scale.
Protein crystals in a microdroplet prepared with nanoliter robotics in the Crystallisation facility.

The Crystallisation facility, led by Fabrice Gorrec, provides a large selection of initial screens in pre-filled MRC crystallisation plates, along with optimised robotic liquid handler protocols including nanolitre dispensing on the Mosquito (SPT Labtech).

The X-ray facility, led by Dom Bellini, enables diffraction screening of crystals using in-house Rigaku-MarDTB systems, including an FR-E+ generator, remote data collection at the Diamond Light Source synchrotron and structure determination.

In addition to providing services to LMB scientists, the facilities are also developing new approaches to crystallisation and crystal structure analysis.

The LMB’s YouTube channel has more information about protein crystallisation and crystallography.

Information for the LMB crystallisation facility can be found here.

Selected Publications

A generic cross-seeding approach to protein crystallization.Caspy I, Tang S, Bellini D, Gorrec FJ Appl Crystallogr 58(Pt 2): 383‑391
Adding α,α-disubstituted and β-linked monomers to the genetic code of an organism.Dunkelmann DL, Piedrafita C, Dickson A, Liu KC, Elliott TS, Fiedler M, Bellini D, Zhou A, Cervettini D, Chin JWNature 625(7995): 603-610 (2024)
A small-molecule PI3Kα activator for cardioprotection and neuroregeneration.Gong GQ, Bilanges B, Allsop B, Masson GR, Roberton V, Askwith T, Oxenford S, Madsen RR, Conduit SE, Bellini D, Fitzek M, Collier M, Najam O, He Z, Wahab B, McLaughlin SH, Chan AWE, Feierberg I, Madin A, Morelli D, Bhamra A, Vinciauskaite V, Anderson KE, Surinova S, Pinotsis N, Lopez-Guadamillas E, Wilcox M, Hooper A, Patel C, Whitehead MA, Bunney TD, Stephens LR, Hawkins PT, Katan M, Yellon DM, Davidson SM, Smith DM, Phillips JB, Angell R, Williams RL, Vanhaesebroeck BNature 618(7963): 159-168 (2023)
The FUSION protein crystallization screen.Gorrec F, Bellini DJ Appl Crystallogr 55(Pt 2): 310‑319