BLAST database:

Select one species:

Enter FASTA sequence:    example

Or, Upload a FASTA sequence file (limited to 5M):

Optional parameters:

• E value: 1e-200 1e-100 1e-50 1e-20 1e-10 1e-5 1e-4 1e-3 1e-2 1e-1 1 10 100 1000
• Word Length: 7 11 15
• Alignments: 1 5 10 20 50 100 250 500
• Strand: both plus minus
• Filter: no yes
• Descriptions: 1 5 10 20 50 100 250 500