Block Searcher

at the Fred Hutchinson Cancer Research Center Blocks WWW server.

Search your protein or DNA sequence against a Blocks Database. [Help] [Example of output]

  • Enter your email address if you want the results through email :

  • Select database to search:
    We recommend searching both Blocks+ and Prints. Blocks+ has automatically-generated blocks, while Prints has hand-crafted blocks.

  • Optionally select cutoff expected value:
  • Optionally select amount of output:
  • Optionally force query sequence type:

  • Additional optional search parameters for a DNA query:

  • Enter your protein or DNA query sequence in FASTA, EMBL or GENBANK format:

    Response time will vary depending on query sequence length and type and may take several minutes. Our system can process a maximum of about 25 amino acids per second. This means a protein query 300 amino acids in length will take at least 12 seconds while a DNA query 1100 nucleotides in length translated in 6 frames will take at least 1.5 minutes. Please be patient, or supply an email address.


    • You can also search Blocks+ using different algorithms with Reverse PSI-BLAST, IMPALA, Ematrix or Identify.
    You may also want to try InterPro, PANAL, CD-Search and other protein family database search engines.

    [Blocks Home] [RPS-BLAST Searcher] [IMPALA Searcher] [Block Maker] [Get Blocks] [LAMA Searcher]
    Contact us

    Page last modified Feb 2001