How to Use NCBI Blast

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The BLAST search tool can be used to identify matches in gene sequences by comparing the sequence you enter with all recorded sequences in relevant databases. Follow these steps to submit a search and receive results quickly and easily.

Step 1: Open search page
Open the Basic Local Alignment Search Tool page from the National Center for Biotechnology Information website by clicking on BLAST in the Popular Resources menu.

Step 2: Choose program
Choose a BLAST program to run from the Basic BLAST menu; read the short descriptions of each program to figure out which one you should run.

Step 3: Select database
On the program page, select the BLAST database you want to use from the Database pull-down menu under Choose Search Set.

Step 4: Enter sequence
Copy and paste the Accession number, GI number, or FASTA formatted sequence into the large text box under Enter Query Sequence.

Tip

Step 5: Submit
Click on the BLAST button to submit your search; the page will refresh when the results are ready.

Did You Know?
The first isolation of DNA was performed by Swiss biologist Friedrich Miescher in 1869.
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Only biologist or biochemists who know what to do with this BLAST program. Basically, BLAST is used to check on amino-acid or nucleotide sequences to look for any match or to see locations for altering these sequences. Also, they can design a hypothetically protein sequence before applying in a lab which can be very helpful in many proteomic studies.

dr.mjd
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I had totally forgotten how to do this. What are the odds this would be found on yt?

HalcyonNine
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Thank you so much!! I have a phylogenetic tree paper due for class and this helped me a lot

atach
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Too bad entering an accession number only like >ZP_06567595 returns an error. It won't look up accession numbers for you, just use them as titles I gather.

gearkat
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How to align two or more sequences using BLAST?

AtulSharmaKaushal
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thanks bro, this video is very useful for me

hendrigunawan
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Way too complicated for a Howcast subscriber?

xerke
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Is this a joke?
Whats with the complex language & absurd web addresses?

Donflorgon