5PSeq Explorer: interactive analysis of co-translational mRNA decay and ribosome dynamics

Co-translational mRNA decay occurs when 5'to3' exonucleases follow the last translating ribosome, generating in vivo ribosome protected fragments. Degradome sequencing (5PSeq)therefore offers unique insights into ribosome dynamics. Despite its potential, resources for systematic analysis of 5'P mRNA decay intermediates and associated features, such as ribosome stalls and collisions, are scarce. We introduce 5PSeq Explorer, a web-based platform built from 773 uniformly processed 5PSeq datasets across 23 species in bacteria and Ascomycota suitable for exploring ribosome dynamics in vivo at codon, amino acid, and transcript levels. By integrating normalized counts, structured metadata, and scalable visualization tools, 5PSeq Explorer provides a framework for studying the crosstalk between mRNA decay and ribosome dynamics. To ensure reproducibility and accessibility, we offer both a public web interface and a Docker-based plug-and-play local version. URL: https://fivepseq-explorer.serve.scilifelab.se/app/fivepseq-explorer.