1. Choose BLAST Program

The BLAST home page has several options for the type of BLAST search that can be performed:

  • Nucleotide BLAST searches a nucleotide against a nucleotide database

  • Protein BLAST to search a protein against a protein database

  • blastx translates a nucleotide into a protein and searches it against the protein databases

  • tblastn searches a protein query against a translated version of the nucleotide databases

Choose BLAST program