Macromolecular crystallography suffers from two major issues: getting well-diffracting crystals and solving the phase problem inherent to large macromolecules. Here, we describe the first example of a lanthanide complex family named "crystallophore" ...
Macromolecular crystallography suffers from two major issues: getting well-diffracting crystals and solving the phase problem inherent to large macromolecules. Here, we describe the first example of a lanthanide complex family named "crystallophore" (Xo4), which contributes to tackling both bottlenecks. This terbium complex, Tb-Xo4, is an appealing agent for biocrystallography, combining the exceptional phasing power of the Tb(iii) heavy atom with powerful nucleating properties, providing ready-to-use crystals for structure determination. Furthermore, protein/Tb-Xo4 co-crystals can be easily detected and discriminated from other crystalline by-products using luminescence. We demonstrate the potential of this additive for the crystallisation and structure determination of eight proteins, two of whose structures were unknown.
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Organizational Affiliation:
Univ Lyon , Ens de Lyon , CNRS UMR 5182 , Université Claude Bernard Lyon 1 , Laboratoire de Chimie , F-69342 Lyon , France . Email: olivier.maury@ens-lyon.fr.,Univ. Grenoble Alpes , CEA , CNRS , IBS , F-38000 Grenoble , France . Email: eric.girard@ibs.fr.
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