Auto-encoding NMR chemical shifts from their native vector space to a residue-level biophysical index

Gabriele Orlando, Daniele Raimondi and Wim Vranken ()
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Gabriele Orlando: ULB-VUB
Daniele Raimondi: KU Leuven
Wim Vranken: ULB-VUB

Nature Communications, 2019, vol. 10, issue 1, 1-9

Abstract: Abstract Chemical shifts (CS) are determined from NMR experiments and represent the resonance frequency of the spin of atoms in a magnetic field. They contain a mixture of information, encompassing the in-solution conformations a protein adopts, as well as the movements it performs. Due to their intrinsically multi-faceted nature, CS are difficult to interpret and visualize. Classical approaches for the analysis of CS aim to extract specific protein-related properties, thus discarding a large amount of information that cannot be directly linked to structural features of the protein. Here we propose an autoencoder-based method, called ShiftCrypt, that provides a way to analyze, compare and interpret CS in their native, multidimensional space. We show that ShiftCrypt conserves information about the most common structural features. In addition, it can be used to identify hidden similarities between diverse proteins and peptides, and differences between the same protein in two different binding states.

Date: 2019
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DOI: 10.1038/s41467-019-10322-w

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