Create the_different_blast_programs.md

docs/ensembl-help/using-ensembl/ensembl-apps/blast/the_different_blast_programs.md

+---
+slug: the-different-blast-programs
+title: The different BLAST programs
+description: The different BLAST programs
+tags:
+  - blast
+status: draft
+---
+
+# The different BLAST programs
+
+The following BLAST programs are available:
+
+- BLASTn: nucleotide sequences against nucleotide databases
+- tBLASTn: translated nucleotide sequences against a nucleotide database
+- tBLASTx: translated nucleotide sequences against a translated nucleotide database
+- BLASTp: peptide sequences against peptide databases
+- BLASTx: nucleotide sequences against amino acid databases
+
+The relevant BLAST programs are selected automatically and displayed in the Program drop-down menu when the target database is selected and the Nucleotide or Protein option is selected above the sequence text box. The BLAST programs have pre-configured parameters, which you can view and change by clicking on the ‘Parameters’ option.