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28 de nov. de 2023 · 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.
- Nucleotide BLAST
PSI-BLAST allows the user to build a PSSM (position-specific...
- Needleman-Wunsch
Enter one or more queries in the top text box and one or...
- Protein BLAST
PSI-BLAST allows the user to build a PSSM (position-specific...
- GenBank
Search and align GenBank sequences to a query sequence using...
- Nucleotide
The Nucleotide database is a collection of sequences from...
- Nucleotide BLAST
Select the sequence database to run searches against. No BLAST database contains all the sequences at NCBI. BLAST databases are organized by informational content (nr, RefSeq, etc.) or by sequencing technique (WGS, EST, etc.). more...
This problem demonstrates how to use BLAST to find human sequences in GenBank that can be amplified with a particular primer pair. Access the nucleotide–nucleotide BLAST page (by clicking on the Nucleotide–nucleotide BLAST link).
BLAST can also accept sequence data that has been cut and pasted form GenBank or GenPept format, which has position numbers at the beginning or end of each line. You may also enter an NCBI accession or GI number. BLAST cannot recognize, gene names or symbols, protein names, E.C. numbers or any non-sequence data.
21 de mar. de 2024 · BLAST can be used to infer functional and evolutionary relationships between sequences as well as help identify members of gene families. There are several types of BLAST searches. NCBI's WebBLAST offers four main search types:
