AUTHOR=Filella-Merce Isaac , Mallet Vincent , Durand Eric , Nilges Michael , Bouvier Guillaume , Pellarin Riccardo TITLE=AlignScape, displaying sequence similarity using self-organizing maps JOURNAL=Frontiers in Bioinformatics VOLUME=4 YEAR=2024 URL=https://www.frontiersin.org/journals/bioinformatics/articles/10.3389/fbinf.2024.1321508 DOI=10.3389/fbinf.2024.1321508 ISSN=2673-7647 ABSTRACT=

The current richness of sequence data needs efficient methodologies to display and analyze the complexity of the information in a compact and readable manner. Traditionally, phylogenetic trees and sequence similarity networks have been used to display and analyze sequences of protein families. These methods aim to shed light on key computational biology problems such as sequence classification and functional inference. Here, we present a new methodology, AlignScape, based on self-organizing maps. AlignScape is applied to three large families of proteins: the kinases and GPCRs from human, and bacterial T6SS proteins. AlignScape provides a map of the similarity landscape and a tree representation of multiple sequence alignments These representations are useful to display, cluster, and classify sequences as well as identify functional trends. The efficient GPU implementation of AlignScape allows the analysis of large MSAs in a few minutes. Furthermore, we show how the AlignScape analysis of proteins belonging to the T6SS complex can be used to predict coevolving partners.