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Open AccessJournal ArticleDOI

DADA2: High-resolution sample inference from Illumina amplicon data

TLDR
The open-source software package DADA2 for modeling and correcting Illumina-sequenced amplicon errors is presented, revealing a diversity of previously undetected Lactobacillus crispatus variants.
Abstract
We present the open-source software package DADA2 for modeling and correcting Illumina-sequenced amplicon errors (https://github.com/benjjneb/dada2). DADA2 infers sample sequences exactly and resolves differences of as little as 1 nucleotide. In several mock communities, DADA2 identified more real variants and output fewer spurious sequences than other methods. We applied DADA2 to vaginal samples from a cohort of pregnant women, revealing a diversity of previously undetected Lactobacillus crispatus variants.

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Linking ecology and systematics of acidobacteria: Distinct habitat preferences of the Acidobacteriia and Blastocatellia in tundra soils

TL;DR: S sandy soils of tundra is revealed as a source of novel acidobacterial diversity and an insight into the ecological preferences of different taxonomic groups within this phylum is provided.
Journal ArticleDOI

Modulation of cytokine patterns and microbiome during pregnancy in IBD

TL;DR: Serum proinflammatory cytokine levels markedly improve on conception in pregnant patients with IBD, and intestinal microbiome diversity of patientsWith IBD normalises during middle and late pregnancy, which concludes that pregnancy is safe and even potentially beneficial for patientswith IBD.
Journal ArticleDOI

Developing standards for the microbiome field.

TL;DR: The development of the first reference reagents produced by the National Institute for Biological Standards and Control for microbiome analysis by next-generation sequencing can act as global working standards and will be evaluated as candidate World Health Organization International Reference Reagents.
Journal ArticleDOI

CasPER, a method for directed evolution in genomic contexts using mutagenesis and CRISPR/Cas9.

TL;DR: A method for robust directed evolution using mutagenesis of large sequence spaces in their genomic contexts using error-prone PCR and Cas9-mediated genome integration of mutant libraries of large-sized donor variants into single or multiple genomic sites with efficiencies reaching 98-99%.
References
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Journal ArticleDOI

UCHIME improves sensitivity and speed of chimera detection

TL;DR: UCHIME has better sensitivity than ChimeraSlayer (previously the most sensitive database method), especially with short, noisy sequences, and in testing on artificial bacterial communities with known composition, UCHIME de novo sensitivity is shown to be comparable to Perseus.
Journal ArticleDOI

UPARSE: highly accurate OTU sequences from microbial amplicon reads

Robert C. Edgar
- 01 Oct 2013 - 
TL;DR: The UPARSE pipeline reports operational taxonomic unit (OTU) sequences with ≤1% incorrect bases in artificial microbial community tests, compared with >3% correct bases commonly reported by other methods.
Journal ArticleDOI

Structure, function and diversity of the healthy human microbiome

Curtis Huttenhower, +253 more
- 14 Jun 2012 - 
TL;DR: The Human Microbiome Project Consortium reported the first results of their analysis of microbial communities from distinct, clinically relevant body habitats in a human cohort; the insights into the microbial communities of a healthy population lay foundations for future exploration of the epidemiology, ecology and translational applications of the human microbiome as discussed by the authors.
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How can I best normalise my samples from amplicon data?

The paper does not provide information on how to best normalize samples from amplicon data. The paper focuses on the DADA2 software package for modeling and correcting Illumina-sequenced amplicon errors.