TCDB is operated by the Saier Lab Bioinformatics Group

9.B.153 The Putative Beta-Barrel Porin/Alpha Amylase (BBP/AA) Family

The BBP/AA family consists of proteins predicted to consist of outer membane beta-barrels. However they are annotated in the NCBI protein database as the DUF1551 or PF04314 family, alpha-amylase catalytic proteins, members of the Phenol_MetA-deg (MetA-pathway of phenol degradation) superfamily, signal peptide proteins and porins. These proteins are numerous and present in a wide range of Gram-negative bacteria. Some have C-terminal peptidoglycan-binding OmpA-like domains as well as other domains, and have sizes that can be as small as 300 aas and as large as 900 aas.

References associated with 9.B.153 family:

Rouse, S.L., F. Stylianou, H.Y.G. Wu, J.L. Berry, L. Sewell, R.M.L. Morgan, A.C. Sauerwein, and S. Matthews. (2018). The FapF Amyloid Secretion Transporter Possesses an Atypical Asymmetric Coiled Coil. J. Mol. Biol. 430: 3863-3871. 29886016