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Cloud-BS: A MapReduce-based bisulfite sequencing aligner on cloud.

Joungmin Choi1, Yoonjae Park2, Sun Kim3

  • 1* Division of Computer Science, Sookmyung Women's University, 100 Cheongpa-ro 47-gil, 04310 Seoul, Republic of Korea.

Journal of Bioinformatics and Computational Biology
|December 21, 2018
PubMed
Summary
This summary is machine-generated.

Cloud-BS is a new tool that speeds up DNA methylation analysis using bisulfite sequencing (BS-seq). It efficiently aligns sequencing reads in a distributed environment, making large-scale epigenomic research easier.

Keywords:
Bisulfite sequencingMapReducealignerclouddistributed

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Area of Science:

  • Genomics
  • Epigenetics
  • Bioinformatics

Background:

  • DNA methylome data is crucial for understanding biological processes.
  • Bisulfite sequencing (BS-seq) provides single-nucleotide resolution of DNA methylation.
  • Aligning BS-seq data is computationally intensive, posing a challenge for large-scale studies.

Purpose of the Study:

  • To develop an efficient BS-seq aligner for parallel processing in distributed environments.
  • To address the computational burden of aligning large-scale methylome data.
  • To improve the performance and accessibility of BS-seq data analysis.

Main Methods:

  • Cloud-BS utilizes the Apache Hadoop framework for distributed computing.
  • Sequencing reads are divided into blocks and processed across multiple nodes.
  • The alignment process is optimized using MapReduce programming model with map and reduce tasks.
  • A pre-configured cloud image simplifies distributed environment setup.

Main Results:

  • Cloud-BS demonstrates significantly improved bisulfite alignment performance.
  • The aligner maintains high mapping accuracy.
  • It offers enhanced efficiency compared to existing BS-seq aligners.
  • Cloud-BS facilitates large-scale methylome data analysis.

Conclusions:

  • Cloud-BS offers an efficient and accurate solution for BS-seq data alignment.
  • The tool reduces the computational bottleneck in epigenomic research.
  • Cloud-BS promotes accessibility to large-scale DNA methylome analysis.