transFold is software and web interface for the tmmtsag algorithm described in:

• J. Waldispühl, B. Berger, P. Clote and J.-M. Steyaert,
  Predicting Transmembrane β-barrel Proteins and Inter-Strand Residue Contacts From Sequence
  To appear in PROTEINS: Structure, Function and Bioinformatics

transFold is an application of multi-tape S-attribute grammars for the prediction of β transmembrane protein supersecondary structure. Multi-tape S-attribute grammars in conjunction with the parser mtsag2c were previously used for the prediction of α-helical transmembrane protein supersecondary structure in the following article:

• J. Waldispühl and J.-M. Steyaert,
  Modeling and Predicting All-α Transmembrane Proteins Including Helix-helix Pairing
  Theoretical Computer Science, special issue on Pattern Discovery in the Post Genome,
  pages 67-92, 2005. doi:10.1016/j.tcs.2004.12.018

If you use transFold, please cite these papers.