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Multi-CSAR: a web server for scaffolding contigs using multiple reference genomes.

Shu-Cheng Liu1, Yan-Ru Ju1, Chin Lung Lu1

  • 1Department of Computer Science, National Tsing Hua University, Hsinchu 30013, Taiwan.

Nucleic Acids Research
|May 7, 2022
PubMed
Summary
This summary is machine-generated.

Multi-CSAR is a novel web server for genome assembly. It efficiently orders and orients genome contigs into scaffolds using multiple reference genomes for improved accuracy.

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Area of Science:

  • Genomics
  • Bioinformatics
  • Computational Biology

Background:

  • Genome assembly is a critical step in genomic research, often facing challenges in ordering and orienting DNA contigs.
  • Existing scaffolding methods may lack accuracy or efficiency when dealing with complex genomes or limited reference data.

Purpose of the Study:

  • To develop an efficient and accurate web server, Multi-CSAR, for scaffolding genome assemblies using multiple reference genomes.
  • To provide a user-friendly platform for researchers to improve the contiguity and accuracy of their genome assemblies.

Main Methods:

  • Multi-CSAR identifies shared sequence markers between a target genome and multiple reference genomes.
  • It computes individual scaffolds based on each reference genome and integrates them into a final multiple reference-derived scaffold.
  • Users can upload target and reference genomes (multi-FASTA format) and select analysis options like reference genome weighting and marker identification methods (NUCmer or PROmer).

Main Results:

  • Multi-CSAR generates a multiple reference-derived scaffold for the target genome.
  • The scaffold is presented in graphical (Circos plot, dotplot) and tabular formats for visual and detailed validation.
  • The server offers improved accuracy and efficiency in genome scaffolding compared to single-reference methods.

Conclusions:

  • Multi-CSAR provides a robust and accurate solution for genome scaffolding by leveraging multiple references.
  • The web server facilitates enhanced genome assembly quality and aids in genomic research and comparative genomics.
  • Its intuitive interface and visualization tools support effective validation of scaffolding results.