SIB BLAST+ Network Service

STEP 1 - Enter a sequence

e.g. P00750, P05067-5, A4_HUMAN or acccgtggtcgctgctg...

Enter a query protein or nucleotide sequence in raw format (no fasta header, use one-letter codes) or a UniProt Knowledgebase (Swiss-Prot or TrEMBL) accession number.


BLAST programs available on ExPASy:

  • blastp compares a protein query sequence against a protein sequence database.
  • blastn compares a nucleotide query sequence against a nucleotide sequence database.
  • tblastn compares a protein query sequence against a nucleotide sequence database dynamically translated in all reading frames.
  • blastx compares a nucleotide query sequence translated in all reading frames against a protein sequence database.
blastp:  protein query      → protein sequence database.
blastn:  nucleotide query → nucleotide sequence database.
tblastn: protein query      → nucleotide sequence database.
blastx:  nucleotide query → protein sequence database.



STEP 2 - Choose a database
Protein databases:

Manually curated sequences only.

 
Nucleotide databases:



STEP 3 - Select options
yes no
yes no