Motivation: New long read sequencers promise to transform sequencing and genome assembly by producing reads tens of kilobases long. However their high error rate significantly complicates assembly and requires expensive correction steps to layout the reads using standard assembly engines. Results: We present an original and efficient spectral algorithm to layout the uncorrected nanopore reads, and its seamless integration into a straightforward overlap/layout/consensus (OLC) assembly scheme. The method is shown to assemble Oxford Nanopore reads from several bacterial genomes into good quality (~99% identity to the reference) genome-sized contigs, while yielding more fragmented assemblies from a Sacharomyces cerevisiae reference strain. Availability and implementation: http://github.com/antrec/spectrassembler Contact: [email protected]
@article{arxiv.1609.07293,
title = {A spectral algorithm for fast de novo layout of uncorrected long nanopore reads},
author = {Antoine Recanati and Thomas Brüls and Alexandre d'Aspremont},
journal= {arXiv preprint arXiv:1609.07293},
year = {2017}
}
Comments
Now includes additional experiments, with a comparison of the method to Canu, Miniasm and Racon with other datasets, and evaluation of the computational performance