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  1. blast.ncbi.nlm.nih.gov › BlastBasic Local Alignment Search Tool - BLAST

    The Basic Local Alignment Search Tool (BLAST) finds regions of local similarity between sequences. The program compares nucleotide or protein sequences to sequence databases and calculates the statistical significance of matches.

    • Protein Blast

      PSI-BLAST allows the user to build a PSSM (position-specific...

    • Nucleotide Blast

      PSI-BLAST allows the user to build a PSSM (position-specific...

    • BLAST

      Enter one or more queries in the top text box and one or...

  2. blast.ncbi.nlm.nih.gov › BlastNucleotide BLAST: Search nucleotide databases using a nucleotide...

    PSI-BLAST allows the user to build a PSSM (position-specific scoring matrix) using the results of the first BlastP run. PHI-BLAST performs the search but limits alignments to those that match a pattern in the query. DELTA-BLAST constructs a PSSM using the results of a Conserved Domain Database search and searches a sequence database.

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  4. blast.ncbi.nlm.nih.gov › BlastMicrobial Nucleotide BLAST

    PSI-BLAST allows the user to build a PSSM (position-specific scoring matrix) using the results of the first BlastP run. PHI-BLAST performs the search but limits alignments to those that match a pattern in the query. DELTA-BLAST constructs a PSSM using the results of a Conserved Domain Database search and searches a sequence database.

  5. www.nature.com › scitable › topicpageBasic Local Alignment Search Tool (BLAST) - Nature

    BLAST is a computer algorithm that compares a query sequence with a database of sequences and finds similarities. Learn how BLAST works, its applications in genomic research, and its history and development.

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    • Nucleotide Blast
    • How To Analyze DNA Sequence Using BLAST | Basic Local Alignment Search ...
    • BLAST for beginners | Digital World Biology
    • PPT - BLAST PowerPoint Presentation, free download - ID:5179757

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  7. www.jax.org › blast-written-tutorials_clickableBLAST Tutorials - The Jackson Laboratory

    Learn how to identify genes, compare DNA and protein sequences, and find variation using BLAST tools. Follow the step-by-step instructions and examples with screenshots and sequences.

  8. www.ncbi.nlm.nih.gov › books › NBK1734BLAST QuickStart - Comparative Genomics - NCBI Bookshelf

    The Basic Local Alignment Search Tool (BLAST) finds regions of local similarity between protein or nucleotide sequences. The program compares nucleotide or protein sequences to sequence in a database and calculates the statistical significance of the matches.

  9. digitalworldbiology.com › tutorial › blast-for-beginnersBLAST for beginners | Digital World Biology

    Mar 17, 2014 · BLAST for beginners introduces students to blastn, a commonly used tool for comparing nucleotide sequences (DNA and RNA). This popular tutorial shows how to do a blast search with a nucleotide sequence, highlights information in the search results, and shows how to interpret the E value and alignment scores.