BLAST (doc)

1. Overview
2. Data & Settings
3. Results

Find similar nucleotide or protein sequences with BLAST.

Looking for another database? Search Swiss-Prot, a protein database, or upload your own FASTA database. For the wider NCBI database collection, use NCBI BLAST.

Name of the analysis:

Query sequences

Upload a FASTA file (up to 10 MB):

Or paste FASTA sequences:

Database & settings

BLAST program:

BLASTP: protein against protein · BLASTN: nucleotide against nucleotide.
BLASTX: translated nucleotide query against protein · TBLASTN: protein against translated nucleotides · TBLASTX: both inputs translated.

Database source:

Use server database

Upload custom FASTA database

Server database:

Swiss-Prot supports BLASTP (protein query) and BLASTX (nucleotide query).

Custom FASTA database file:

Upload an unaligned FASTA database, up to 20 MB. Choose a program matching the query and database sequence types.

Notifications (optional)

Email:

Confirm email:

Analysis files are retained for 30 days from submission. Download your results before the expiration date. Retention and deletion.

phylogeny.atgc-montpellier.fr is provided by the ATGC bioinformatics platform.