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Structural Biology

Intrinsically Disordered Proteins

Bruker’s GHz-class NMR technology enables novel research in functional structural biology of proteins and protein complexes like intrinsically disordered proteins (IDPs). Ultra-high field NMR is the only method available to study the physical properties and interactions of IDPs.

An intrinsically disordered protein (IDP) is a protein that is unable to fold into a stable or ordered three-dimensional structure. Unlike folded proteins, IDPs are characterized by a high degree of disorder, local mobility and high dynamicity. These peculiar properties confer them completely different functional advantages, compared with proteins that have a well-defined 3D structure.​

The biological importance of intrinsically disordered proteins (IDPs) has been discovered in recent years by sequence-specific assignments using NMR. They are now being recognized as biologically crucial in both healthy systems and the pathophysiology of various diseases. ​

Due to their lack of structure and high mobility, studying IDPs can be challenging. They cannot be characterized using traditional X-ray crystallography techniques, so nuclear magnetic resonance (NMR) is the tool of choice. NMR has evolved into a powerful technique in structural biology for studying the dynamics of proteins, including IDPs. It is now possible to overcome the problems of incomplete assignment, low chemical shift dispersion, and an inability to detect post-translational modifications using new techniques.​