Assigning Gene Symbols to a Protein FASTA File

This server uses a reciprocal BLAST method to assign gene symbols from a target reference protein set to a query protein set.
This online tool has the following, current restrictions:

To create your own protein reference file with assigned gene symbols, please fill in the details below.

Upoad your FASTA file of proteins to reciprocally BLAST against the reference database:

E value cutoff threshold

Please select whether you are using your own reference database (DB) or one of default options supplied by us.

I will use a pre-defined DB
I will supply my own reference DB

pre-defined reference set to Use

If you are supplying your own database, please upload the reference FASTA file here:

Please give us your e-mail address to which we can send the results:


If you should encounter any errors while submitting a job or during job processing, please contact Please be patient -- support requests will be handled as quickly as possible. Do not forget to give credit.