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Related Concept Videos

Restriction Enzymes01:11

Restriction Enzymes

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Restriction enzymes are bacterial enzymes used to cut DNA in a sequence-specific manner. To cleave DNA, they bind to specific palindromic sequences called restriction sites. Such palindromic DNA sequences or inverted repeats are commonly found in regions of functional significance, such as the origin of replication, gene operator sites, and regions containing transcription termination signals.
The host bacteria protect their own genomic DNA from these enzymes by methylating these sites. Some...
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Enhanced Reduced Representation Bisulfite Sequencing for Assessment of DNA Methylation at Base Pair Resolution
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MethylRAD: a simple and scalable method for genome-wide DNA methylation profiling using methylation-dependent

Shi Wang1, Jia Lv2, Lingling Zhang2

  • 1Ministry of Education Key Laboratory of Marine Genetics and Breeding, College of Marine Life Sciences, Ocean University of China, Qingdao, People's Republic of China Qingdao National Laboratory for Marine Science and Technology, Qingdao, People's Republic of China.

Open Biology
|November 20, 2015
PubMed
Summary

A new DNA methylation profiling method, MethylRAD, uses Mrr-like enzymes for scalable epigenomic analysis. This method enables reference-free analysis with low DNA input, benefiting diverse species and research applications.

Keywords:
DNA methylationMRR-like enzymeMethylRADepigenomics

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Area of Science:

  • Epigenetics
  • Genomics
  • Molecular Biology

Background:

  • Characterizing dynamic DNA methylomes is crucial for understanding DNA methylation's evolution and function in eukaryotes.
  • Existing sequencing-based methods have limitations, hindering application in less-studied phylogenetic groups.
  • Mrr-like enzymes offer potential for new DNA methylation profiling methods due to their ability to isolate methylated DNA fragments.

Purpose of the Study:

  • To develop a simple, scalable, and versatile DNA methylation profiling method using Mrr-like enzymes.
  • To overcome limitations of current methods, such as high DNA input requirements and reliance on reference genomes.
  • To provide a cost-effective tool for epigenomic research across diverse species and sample types.

Main Methods:

  • Developed MethylRAD, a DNA methylation profiling method utilizing Mrr-like enzymes.
  • Enabled de novo (reference-free) methylation analysis.
  • Achieved extremely low DNA input requirements (1 ng) and adjustable tag density.

Main Results:

  • Validated MethylRAD's power and accuracy in model (Arabidopsis thaliana) and non-model (Patinopecten yessoensis) species.
  • Demonstrated utility in identifying the LPCAT1 gene potentially involved in scallop carotenoid accumulation.
  • MethylRAD offers advantages over existing tools like RRBS and MeDIP, including lower DNA input and reference-free analysis.

Conclusions:

  • MethylRAD is a universal epigenomic tool suitable for diverse applications, from model to non-model organisms.
  • The method addresses limitations of current profiling techniques, making epigenomic studies more accessible.
  • MethylRAD facilitates research on DNA methylation across various species, sample types, and genome sizes at an affordable cost.