BetaSerpentine: a bioinformatics tool for reconstruction of amyloid structures

Motivation Numerous experimental studies have suggested that polypeptide chains of large amyloidogenic regions zig-zag in β-serpentine arrangements. These β-serpentines are stacked axially and form the superpleated β-structure. Despite this progress in the understanding of amyloid folds, the determination of their 3D structure at the atomic level is still a problem due to the polymorphism of these fibrils and incompleteness of experimental structural data. Today, the way to get insight into the atomic structure of amyloids is a combination of experimental studies with bioinformatics. Results We developed a computer program BetaSerpentine that reconstructs β-serpentine arrangements from individual β-arches predicted by ArchCandy program and ranks them in order of preference. It was shown that the BetaSerpentine program in combination with the experimental data can be used to gain insight into the detailed 3D structure of amyloids. It opens avenues to the structure-based interpretation and design of the experiments. Availability and implementation BetaSerpentine webserver can be accessed through website: http://bioinfo.montp.cnrs.fr/b-serpentine. Source code is available in git.hub repository (github.com/stanislavspbgu/BetaSerpentine). Contact stanislavspbgu@gmail.com or andrey.kajava@crbm.cnrs.fr. Supplementary information Supplementary data are available at Bioinformatics online.

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