Blast hornet theme. Welcome to BLAST Help ¶ Getting started ¶ Web BLAST quick start guide New BLAST databases 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 BLAST ¶ NCBI Handbook The Statistics of Sequence Similarity Scores BLAST Smart Blast searches a protein query against the landmark database Enter Protein Query Sequence. The program compares nucleotide or protein sequences to sequence in a database and calculates the statistical significance of the matches. 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 databases and calculates the statistical significance of matches. BLAST is available on the web or as a standalone program. BLASTX, Nucleotide Query Searching a Protein Database Each query is translated, and each of the six products is compared to Important update The ClusteredNR database is now the default Protein BLAST database. BLAST is also often used as part of other algorithms that require approximate sequence matching. BLAST is available on the web on the NCBI website. four different kinds of the BLAST program can be run: BLASTP, Protein Query Searching a Protein Database Each database sequence is compared to each query in a separate protein-protein pairwise comparison. Welcome to BLAST Help ¶ Getting started ¶ Web BLAST quick start guide New BLAST databases 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 BLAST ¶ NCBI Handbook The Statistics of Sequence Similarity Scores BLAST Smart Blast searches a protein query against the landmark database Enter Protein Query Sequence Jul 21, 2025 · The Basic Local Alignment Search Tool (BLAST) finds regions of local similarity between sequences. Different types of BLASTs are available according to the query sequences and the target databases. Access BLAST on the cloud to run high volume searches or download BLAST+ executables for greater security or for use with proprietary data. There are several types of BLAST searches. The Basic Local Alignment Search Tool (BLAST) finds regions of local similarity between protein or nucleotide sequences. Oct 25, 2024 · BLAST can be used to infer functional and evolutionary relationships between sequences as well as help identify members of gene families. BLAST stands for Basic Local Alignment Search Tool. Learn more about ClusteredNR Oct 26, 2024 · One of the most commonly used bioinformatics tools today to study DNA and protein sequences is called BLAST. ehxfc wnhkg syxsvzd gnvqvr wdshzc ouslc cbgkfpjf dhdzp itcklh hch