β-Barrel TransMembrane Search Tool

BLAST searches using the bbTM scoring matrices
against the NR-NCBI database.

>Transmembrane fragment search for structures of beta barrel membrane proteins with a solved structure using the bbTMout matrix:


>Transmembrane fragment search for human mitochondrial beta-barrel membrane proteins:


> Provide your own transmembrane segment.
Minimal sequence length: 20 amino acids. FASTA format required. Example of FASTA format:

>name of the sequence

This option is currently unavailable due to hardware upgrade.

Expected to be back on March 2017.

We apologize for the inconvenience.



David Jimenez-Morales and Jie Liang

Dept of Bioengineering/ Bioinformatics Program
University of Illinois at Chicago
Chicago, Illinois, United States of America