Bigger is better: Sequential backbone assignments are obtained by NMR spectroscopy for a 1 MDa proteasome complex. The method relies on immobilization of a soluble protein complex by magic-angle spinning. Deuteration and proton detection of exchangeable sites and paramagnetic relaxation enhancement enables exploration of structural and dynamic properties of supramolecular assemblies at atomic resolution.
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Mainz et al. (2013) studied this question.
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