Sequencing methods: third generation

Authors

  • José Miguel Valderrama Martín
  • Francisco Ortigosa
  • Rafael A. Cañas

DOI:

https://doi.org/10.24310/enbio.v13i175.17271

Keywords:

sequencing, third generation, SMRT, PacBio, Oxford Nanopore, MinION

Abstract

The first techniques for massive sequencing of nucleic acids (2nd generation) have allowed an extraordi- nary development of Genomics and its «democratization». However, they present a series of weaknesses, mainly their inability to generate readings greater than 1 kb and the need for prior amplification of the samples. In recent years, so-called third-generation sequencing techniques have appeared, alleviating some of the shortcomings of previous technologies. On the one hand, they average read size reaches 30 kb, with maximums of 2.3 Mb in a read On the other hand, they do not need prior amplification of the nucleic acid samples, so the epigenetic marks that they may present are not lost. In addition, these third generation sequencing techniques can also perform direct sequencing of RNA, which is not possible with the preceding techniques. Thus, they point to a new path in nucleic acid sequencing, setting a new precedent in genomic science development unknown until now.

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Published

2020-12-21

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Artículos

How to Cite

Sequencing methods: third generation. (2020). Encuentros En La Biología, 13(175), 15-21. https://doi.org/10.24310/enbio.v13i175.17271