BLAST finds regions of similarity between biological sequences. more...

The Basic Local Alignment Search Tool (BLAST) finds regions of local similarity between sequences. The program compares nucleotide or protein sequences to sequence databases and calculates the statistical significance of matches. BLAST can be used to infer functional and evolutionary relationships between sequences as well as help identify members of gene families.
New! DELTA-BLAST, a more sensitive protein-protein search

BLAST Assembled Genomes

Basic BLAST

Choose a BLAST program to run.
Program
Program Description
Search a nucleotide database using a nucleotide query
Algorithms: blastn, megablast, discontiguous megablast
Search protein database using a protein query
Algorithms: blastp, psi-blast, phi-blast, delta-blast
Search protein database using a translated nucleotide query
Search translated nucleotide database using a protein query
Search translated nucleotide database using a translated nucleotide query

Specialized BLAST