MGView: an alignment and visualization tool to enhance gap closure of microbial genomes.

Abstract:

:Gap closure is a challenging phase in microbial random shotgun genome sequencing projects, particularly since genome assemblies are often complicated by the presence of repeat elements, insertion sequences and other similar factors that contribute to sequence misassemblies. While it is well recognized that the conservation of genetic information between microbial genomes, combined with the exponential increase in available microbial sequences, can be exploited to increase the efficiency of gap closure, we lack the computational tools to aid in this process. We describe here a new tool, MGView, which was developed to create a graphical depiction of the alignment of a set of microbial contigs against a completed microbial genome. The results of our assembly of the Staphylococcus aureus RF122 genome show that MGView enables a considerable reduction in time and economic cost associated with closure. Together, the results also show that the application of MGView not only enables a reduction in fold-coverage requirements of the random shotgun sequence phase, but also provides interesting insights into differences in gene content and organization between finished and unfinished microbial genomes.

journal_name

Nucleic Acids Res

journal_title

Nucleic acids research

authors

Herron-Olson L,Freeman J,Zhang Q,Retzel EF,Kapur V

doi

10.1093/nar/gng107

keywords:

subject

Has Abstract

pub_date

2003-09-01 00:00:00

pages

e106

issue

17

eissn

0305-1048

issn

1362-4962

journal_volume

31

pub_type

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