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USA.gov. 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 can be used to infer functional and evolutionary relationships between sequences as well as help ...
- Blast
The Basic Local Alignment Search Tool (BLAST) finds regions...
- Nucleotide Blast
PSI-BLAST allows the user to build a PSSM (position-specific...
- Recent Results
This page provides links to your unexpired BLAST jobs. Enter...
- Saved Strategies
clicking the 'Saved Search Strategy' link at the top of a...
- Help
Welcome to BLAST Help¶ Getting started¶ Web BLAST quick...
- Smartblast
Smart BLAST is a tool for searching and aligning protein...
- Tblastn
Enter one or more queries in the top text box and one or...
- Global Alignment
Enter one or more queries in the top text box and one or...
- Blast
Title: Core nucleotide BLAST database. Description: The core nucleotide BLAST database consists of GenBank+EMBL+DDBJ+PDB+RefSeq sequences, but excludes EST, STS, GSS, WGS, TSA, patent sequences as well as phase 0, 1, and 2 HTGS sequences and most eukaryotic chromosome sequences. The database is non-redundant.
BLAST is a tool for comparing sequences from NCBI databases or user-submitted data. It can help identify homologous regions, functional domains, and evolutionary relationships.
1. Introduction. BLAST is an acronym for Basic Local Alignment Search Tool and refers to a suite of programs used to generate alignments between a nucleotide or protein sequence, referred to as a “query” and nucleotide or protein sequences within a database, referred to as “subject” sequences. The original BLAST program used a protein ...
- David Wheeler, Medha Bhagwat
- 2007
Aug 6, 2024 · NCBI's WebBLAST offers four main search types: BLASTn (Nucleotide BLAST): compares one or more nucleotide query sequences to a subject nucleotide sequence or a database of nucleotide sequences. This is useful when trying to determine the evolutionary relationships among different organisms (see Comparing two or more sequences below).
- Elliott Smith
- 2015
Learn about the new features and enhancements of BLAST, the popular tool for sequence similarity search. Find links to BLAST forms, databases, documentation, and recent results.
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blast.ncbi.nlm.nih.gov /Blast.cgi In bioinformatics , BLAST ( basic local alignment search tool ) [ 3 ] is an algorithm and program for comparing primary biological sequence information, such as the amino-acid sequences of proteins or the nucleotides of DNA and/or RNA sequences.
