ExOrthist: a tool to infer exon orthologies at any evolutionary distance
2021
Yamile Márquez | Federica Mantica | Luca Cozzuto | Demian Burguera | Antonio Hermoso-Pulido | Julia Ponomarenko | Scott W. Roy | Manuel Irimia
Abstract Several bioinformatic tools have been developed for genome-wide identification of orthologous and paralogous genes. However, no corresponding tool allows the detection of exon homology relationships. Here, we present ExOrthist, a fully reproducible Nextflow-based software enabling inference of exon homologs and orthogroups, visualization of evolution of exon-intron structures, and assessment of conservation of alternative splicing patterns. ExOrthist evaluates exon sequence conservation and considers the surrounding exon-intron context to derive genome-wide multi-species exon homologies at any evolutionary distance. We demonstrate its use in different evolutionary scenarios: whole genome duplication in frogs and convergence of Nova-regulated splicing networks ( https://github.com/biocorecrg/ExOrthist ).
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