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Projector 2: contig mapping for efficient gap-closure of prokaryotic genome sequence assemblies
Sacha A F T van Hijum1, Aldert L Zomer, Oscar P Kuipers
1Department of Molecular Genetics, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands.
Nucleic Acids Research
|June 28, 2005
Summary
Projector 2 aids genome assembly by using existing genomic sequences to map new ones, efficiently closing gaps. This tool simplifies prokaryotic genome sequencing with automated repeat removal and primer design for high success rates.
Area of Science:
- Genomics
- Bioinformatics
- Molecular Biology
Background:
- Genome sequencing is rapidly expanding, generating vast amounts of genomic data.
- Accurate genome assembly is crucial for understanding organismal biology and evolution.
- Existing methods for closing gaps in genome assemblies can be labor-intensive and inefficient.
Purpose of the Study:
- To introduce Projector 2, a novel computational tool for improving genome sequence assembly.
- To facilitate the inference of linkage information for genome assembly using template genomes.
- To enable efficient gap closure in prokaryotic genome assemblies.
Main Methods:
- Projector 2 utilizes unfinished genomic sequences as templates to infer linkage information.
- The software incorporates automated repeat-masking to handle repetitive DNA elements.
- Automated primer design, including for multiplex PCR, is employed for gap closure, considering unreliable contig ends.
Main Results:
- Projector 2 achieved mapping success rates close to 100% when using template genome fragments and repeat-masking.
- The tool demonstrated high efficiency and ease of use in closing gaps in prokaryotic genome assemblies.
- A user-friendly web interface facilitates accessibility and application of the software.
Conclusions:
- Projector 2 significantly enhances the efficiency and accuracy of genome sequence assembly, particularly for prokaryotes.
- The automated features, including repeat-masking and primer design, streamline the gap-closure process.
- The freely accessible web interface promotes wider adoption and application in genomic research.