Protein Similarity Search

PSI-BLAST allows users to construct and perform a NCBI BLAST search with a custom, position-specific, scoring matrix which can help find distant evolutionary relationships. Users can specify pattern files to restrict search results using the PHI-BLAST functionality under 'more options'.

STEP 1 - Select your database
STEP 2 - Enter your input sequence

a PROTEIN sequence in any supported format:

a file:

STEP 3 - Set your parameters
STEP 4 - Submit your job
(Tick this box if you want to be notified by email when the results are available)
If available, the title will be included in the subject of the notification email and can be used as a way to identify your analysis

If you use this service, please consider citing the following publication: Search and sequence analysis tools services from EMBL-EBI in 2022

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