scispace - formally typeset
Open AccessJournal ArticleDOI

BLAST+: architecture and applications.

TLDR
The new BLAST command-line applications, compared to the current BLAST tools, demonstrate substantial speed improvements for long queries as well as chromosome length database sequences.
Abstract
Sequence similarity searching is a very important bioinformatics task. While Basic Local Alignment Search Tool (BLAST) outperforms exact methods through its use of heuristics, the speed of the current BLAST software is suboptimal for very long queries or database sequences. There are also some shortcomings in the user-interface of the current command-line applications. We describe features and improvements of rewritten BLAST software and introduce new command-line applications. Long query sequences are broken into chunks for processing, in some cases leading to dramatically shorter run times. For long database sequences, it is possible to retrieve only the relevant parts of the sequence, reducing CPU time and memory usage for searches of short queries against databases of contigs or chromosomes. The program can now retrieve masking information for database sequences from the BLAST databases. A new modular software library can now access subject sequence data from arbitrary data sources. We introduce several new features, including strategy files that allow a user to save and reuse their favorite set of options. The strategy files can be uploaded to and downloaded from the NCBI BLAST web site. The new BLAST command-line applications, compared to the current BLAST tools, demonstrate substantial speed improvements for long queries as well as chromosome length database sequences. We have also improved the user interface of the command-line applications.

read more

Content maybe subject to copyright    Report

Citations
More filters
Journal ArticleDOI

Computational approaches to natural product discovery.

TL;DR: It is argued that the development of algorithms to mine the continuously increasing amounts of (meta)genomic data will enable the promise of genome mining to be realized and provide a vision of what natural product discovery might look like in the future.
Journal ArticleDOI

The house spider genome reveals an ancient whole-genome duplication during arachnid evolution

Evelyn E. Schwager, +60 more
- 31 Jul 2017 - 
TL;DR: The results reveal that spiders and scorpions are likely the descendants of a polyploid ancestor that lived more than 450 MYA, and this study of the ancient WGD event in Arachnopulmonata provides a new comparative platform to explore common and divergent evolutionary outcomes ofpolyploidization events across eukaryotes.
Journal ArticleDOI

The genome sequence of segmental allotetraploid peanut Arachis hypogaea

TL;DR: The genome sequence of segmental allotetraploid peanut is reported and suggests that diversity generated by genetic deletions and homeologous recombination helped to favor the domestication of Arachis hypogaea over its diploid relatives.
Journal ArticleDOI

Assembly of 913 microbial genomes from metagenomic sequencing of the cow rumen

TL;DR: This dataset substantially improves the coverage of rumen microbial genomes in the public databases and represents a valuable resource for biomass-degrading enzyme discovery and studies of the rumen microbiome.
Journal ArticleDOI

MAFFT-DASH: integrated protein sequence and structural alignment.

TL;DR: MAFFT-DASH showed 10–20% improvement over standard MAFFT for MSA problems with weak similarity, in terms of Sum-of-Pairs (SP), a measure of how well a program succeeds at aligning input sequences in comparison to a reference alignment.
References
More filters
Journal ArticleDOI

Basic Local Alignment Search Tool

TL;DR: A new approach to rapid sequence comparison, basic local alignment search tool (BLAST), directly approximates alignments that optimize a measure of local similarity, the maximal segment pair (MSP) score.
Journal ArticleDOI

Gapped BLAST and PSI-BLAST: a new generation of protein database search programs.

TL;DR: A new criterion for triggering the extension of word hits, combined with a new heuristic for generating gapped alignments, yields a gapped BLAST program that runs at approximately three times the speed of the original.
Journal ArticleDOI

BLAT—The BLAST-Like Alignment Tool

TL;DR: How BLAT was optimized is described, which is more accurate and 500 times faster than popular existing tools for mRNA/DNA alignments and 50 times faster for protein alignments at sensitivity settings typically used when comparing vertebrate sequences.
Journal ArticleDOI

Initial sequencing and comparative analysis of the mouse genome.

Robert H. Waterston, +222 more
- 05 Dec 2002 - 
TL;DR: The results of an international collaboration to produce a high-quality draft sequence of the mouse genome are reported and an initial comparative analysis of the Mouse and human genomes is presented, describing some of the insights that can be gleaned from the two sequences.
Journal ArticleDOI

A greedy algorithm for aligning DNA sequences.

TL;DR: A new greedy alignment algorithm is introduced with particularly good performance and it is shown that it computes the same alignment as does a certain dynamic programming algorithm, while executing over 10 times faster on appropriate data.
Related Papers (5)
Trending Questions (1)
Apakah fungsi dari Basic Local Alignment Search Tool?

The function of the Basic Local Alignment Search Tool (BLAST) is to perform sequence similarity searches by comparing a query sequence against a sequence database to find matches.