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  1. Basic Local Alignment Search Tool - BLAST

    Jul 21, 2025 · The Basic Local Alignment Search Tool (BLAST) finds regions of local similarity between sequences. The program compares nucleotide or protein sequences to sequence …

  2. Nucleotide BLAST: Search nucleotide databases using a nucleotide …

    Important update The ClusteredNR database is now the default Protein BLAST database. Learn more about ClusteredNR

  3. Nucleotide BLAST: Search nucleotide databases using a nucleotide …

    This title appears on all BLAST results and saved searches. Enter one or more queries in the top text box and one or more subject sequences in the lower text box. Then use the BLAST button …

  4. BLAST+ executables — BLASTHelp documentation

    The NCBI provides a suite of command-line tools to run BLAST called BLAST+. This allows users to perform BLAST searches on their own server without size, volume and database restrictions.

  5. Welcome to BLAST Help — BLASTHelp documentation

    New Guide to BLAST home and search pages Blast report description Blast topics Frequently Asked Questions Getting Help ¶ Write to the help desk Mailing list BLAST tutorials About …

  6. Needleman-Wunsch alignment of two nucleotide sequences - BLAST

    Local alignments algorithms (such as BLAST) are most often used. A global alignment should only be used on sequences that share significant similarity over most of their extents, and then …

  7. Smart BLAST

    Smart Blast searches a protein query against the landmark database Enter Protein Query Sequence

  8. Overview — ElasticBLAST 1.4.0 documentation

    Mar 17, 2025 · The Basic Local Alignment Search Tool (BLAST) finds regions of local similarity between sequences. The program compares nucleotide or protein sequences to sequence …

  9. Frequently Asked Questions — BLASTHelp documentation

    You can expand a cluster on your BLAST results to view and download a report or the sequences of all member proteins, and you can also perform a BLAST alignment of all the members of …

  10. BLAST: Basic Local Alignment Search Tool

    Lookup BLAST Job Request ID: Your Available BLAST jobs (Click headers to sort columns) ... Please sign in to My NCBI to see all of your recent results and to save your search strategies