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Journal ArticleDOI

UPARSE: highly accurate OTU sequences from microbial amplicon reads

Robert C. Edgar
- 01 Oct 2013 - 
- Vol. 10, Iss: 10, pp 996-998
TLDR
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.
Abstract
Amplified marker-gene sequences can be used to understand microbial community structure, but they suffer from a high level of sequencing and amplification artifacts. The UPARSE pipeline reports operational taxonomic unit (OTU) sequences with ≤1% incorrect bases in artificial microbial community tests, compared with >3% incorrect bases commonly reported by other methods. The improved accuracy results in far fewer OTUs, consistently closer to the expected number of species in a community.

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Citations
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Journal ArticleDOI

Lactobacillus reuteri induces gut intraepithelial CD4+CD8αα+ T cells.

TL;DR: It is found that DP IEL numbers in mice varied in different vivaria, correlating with the presence of Lactobacillus reuteri, a particular species of probiotic bacteria that can reprogram intraepithelial CD4+ T cells into immunoregulatory T cells.
Journal ArticleDOI

Sequence depth, not PCR replication, improves ecological inference from next generation DNA sequencing.

TL;DR: The results suggest that molecular ecology studies will benefit more from investing in robust sequencing technologies than from replicating PCRs, and the potential for continuous integration of older datasets with newer technology is demonstrated.
Journal ArticleDOI

Updating the 97% identity threshold for 16S ribosomal RNA OTUs.

Robert C. Edgar
- 15 Jul 2018 - 
TL;DR: Using a large set of high‐quality 16S rRNA sequences from finished genomes, the correspondence of OTUs to species is assessed for five representative clustering algorithms using four accuracy metrics and all algorithms had comparable accuracy when tuned to a given metric.
Journal ArticleDOI

Durable coexistence of donor and recipient strains after fecal microbiota transplantation.

TL;DR: The authors found extensive coexistence of donor and recipient strains, persisting 3 months after treatment, and same-donor recipients displayed varying degrees of microbiota transfer, indicating individual patterns of microbiome resistance and donor-recipient compatibilities.
References
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Journal ArticleDOI

Search and clustering orders of magnitude faster than BLAST

Robert C. Edgar
- 01 Oct 2010 - 
TL;DR: UCLUST is a new clustering method that exploits USEARCH to assign sequences to clusters and offers several advantages over the widely used program CD-HIT, including higher speed, lower memory use, improved sensitivity, clustering at lower identities and classification of much larger datasets.
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

Database resources of the National Center for Biotechnology Information

TL;DR: In addition to maintaining the GenBank(R) nucleic acid sequence database, the National Center for Biotechnology Information (NCBI) provides data analysis and retrieval resources for the data in GenBank and other biological data made available through NCBI’s website.
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