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Query : Blast [subsection]

Online Tools (9)

Used in order to build a database on a given sequence file and perform a Blast on it. Useful to realize reciprocal Blast. The proposed version of formatDB and Blast are those including MPI compatibility. Then each execution use 8 cores to reduce execution time.

Author(s)

Altschul, Madden, Schaeffer, Zhang, Miller, Lipman ... [wrapper : MBB development team]


Version

1


Subsections

Blast


BLAST2

Blast

 

The BLAST programs are widely used tools for searching protein and DNA databases for sequence similarities. For protein comparisons, a variety of definitional, algorithmic and statistical refinements described here permits the execution time of the BLAST programs to be decreased substantially while enhancing their sensitivity to weak similarities. 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. In addition, a method is introduced for automatically combining statistically significant alignments produced by BLAST into a position-specific score matrix, and searching the database using this matrix. The resulting Position-Specific Iterated BLAST (PSI-BLAST) program runs at approximately the same speed per iteration as gapped BLAST, but in many cases is much more sensitive to weak but biologically relevant sequence similarities. PSI-BLAST is used to uncover several new and interesting members of the BRCT superfamily.

Author(s)

Altschul, Madden, Schaeffer, Zhang, Miller, Lipman


Version

2


Subsections

Blast


Bl2seq

Blast

 

The program bl2seq is designed to compare two input FASTA sequences directly bypassing the formatdb step. This allows users to quickly assess the similarities between two input sequences. The program is capable of performing six types of blast searches: blastn, blastp, blastx, tblastn, tblastx, and megabalst in place of blastn.

Author(s)

Altschul, Madden, Schaeffer, Zhang, Miller, Lipman


Version

1


Subsections

Blast


BLASTClust is a program within the standalone BLAST package used to cluster either protein or nucleotide sequences. The program begins with pairwise matches and places a sequence in a cluster if the sequence matches at least one sequence already in the cluster. In the case of proteins, the blastp algorithm is used to compute the pairwise matches; in the case of nucleotide sequences, the Megablast algorithm is used.

Author(s)

Ilya Dondoshansky, Yuri Wolf


Version

2.2.21


Subsections

Blast


Megablast

Alignment

 

Mega BLAST uses a greedy algorithm [1] for the nucleotide sequence alignment search. This program is optimized for aligning sequences that differ slightly as a result of sequencing or other similar "errors". When larger word size is used (see explanation below), it is up to 10 times faster than more common sequence similarity programs. Mega BLAST is also able to efficiently handle much longer DNA sequences than the blastn program of traditional BLAST algorithm.

Author(s)

NCBI -Tao Tao


Version

1


Subsections

Alignment - Blast


Build database giving a sequence file in order to blast query sequences on it using magablast. Treatment performed using formatDB and megablast (8 cores).

Author(s)

Altschul, Madden, Schaeffer, Zhang, Miller, Lipman ... [wrapper : MBB development team]


Version

1


Subsections

Blast


After read cleaning this pipeline will call Abyss for denovo assembly in contigs. The resulting contigs can be further assembled with CAP3. The contigs are then blasted against a provided multi-fasta file and/or ncbi databases. If a blastx on nr is chosen the result can be used to annotate the best hits with blast2go.

Author(s)

MBB dev


Version

1


Subsections

Pipeline - Blast - Assembler


Tags

De novo


Reciprocal Best Hit

Author(s)

Wrapper by MBB Development team


Version

1


Subsections

Blast


Magic-BLAST is a new tool for mapping large sets of next-generation RNA or DNA sequencing runs against a whole genome or transcriptome.

Author(s)

Unknown


Version

1.1


Subsections

Tool - Blast


Tags

RNA-seq - Apps