NCBI BLAST < Sequence Similarity Searching

Protein Similarity Search

The emphasis of this tool is to find regions of sequence similarity, which will yield functional and evolutionary clues about the structure and function of your novel sequence.

A new, more accurate, search tool combining optimal searching with iterative profile generation and over-extension error prevention is available using PSI-Search.

STEP 1 - Select your database

PROTEIN DATABASES
- UniProt Knowledgebase
- UniProtKB/Swiss-Prot
- UniProtKB/Swiss-Prot isoforms
- UniProtKB/TrEMBL
- UniProt Clusters
  - UniProt Clusters 100%
  - UniProt Clusters 90%
  - UniProt Clusters 50%

STEP 2 - Enter your input sequence

Enter or paste a sequence in any supported format.

or upload a file:

STEP 3 - Set your parameters

PROGRAM

STEP 4 - Submit your job

Be notified by email (Tick this box if you want to be notified by email when the results are available)

EMAIL:

TITLE: 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