Phased nanopore assembly with Shasta and modular graph phasing with GFAse

Kavli Affiliate: Richard Axel

| Authors: Ryan Lorig-Roach, Melissa Meredith, Jean Monlong, Miten Jain, Hugh Olsen, Brandy McNulty, David Porubsky, Tessa G. Montague, Julian Lucas, Chris Condon, Jordan Eizenga, Sissel Juul, Sean McKenzie, Sara Simmonds, Jimin Park, Mobin Asri, Sergey Koren, Evan Eichler, Richard Axel, Bruce Martin, Paolo Carnevali, Karen Miga and Benedict Paten

| Summary:

As a step towards simplifying and reducing the cost of haplotype resolved de novo assembly, we describe new methods for accurately phasing nanopore data with the Shasta genome assembler and a modular tool for extending phasing to the chromosome scale called GFAse. We test using new variants of Oxford Nanopore Technologies’ (ONT) PromethION sequencing, including those using proximity ligation and show that newer, higher accuracy ONT reads substantially improve assembly quality.

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