GUNC: detection of chimerism and contamination in prokaryotic genomes.

Genome Biology
A. N. OrakovPeer Bork

Abstract

Genomes are critical units in microbiology, yet ascertaining quality in prokaryotic genome assemblies remains a formidable challenge. We present GUNC (the Genome UNClutterer), a tool that accurately detects and quantifies genome chimerism based on the lineage homogeneity of individual contigs using a genome's full complement of genes. GUNC complements existing approaches by targeting previously underdetected types of contamination: we conservatively estimate that 5.7% of genomes in GenBank, 5.2% in RefSeq, and 15-30% of pre-filtered "high-quality" metagenome-assembled genomes in recent studies are undetected chimeras. GUNC provides a fast and robust tool to substantially improve prokaryotic genome quality.

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Software Mentioned

Refseq
Genome UNClutterer
Python3
prodigal
CONCOCT
bioconda
CheckM
GUNC
canopy
ABAWACA

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