Hello I would like to use SeqAn to align peptide sequences to protein (FASTA) databases. Is there a way to do this? I work with a lot of proteomics data in KNIME, and the OpenMS group suggested I look into SeqAn for what I'm trying to do next. While you probably know that the OpenMS project already has several spectral matching search algorithms built in to it, the project only has one de novo algorithm (compnovo). While compnovo is a great tool, by virtue of being a de novo algorithm it does not do sequence alignment. I can easily get a list of peptides from compnovo, and I can use the Vernalis tool set to read in a FASTA database, but I don't know of a good tool to score the sequence similarities. Can SeqAn do this? I have had a hard time with the documentation (particularly in KNIME) and I haven't been able to find any workflows that show anything quite like this with SeqAn in KNIME. thank you! Lee -- ------- Lee S Parsons, PhD RIS Biological Mass Spectrometry Analyst | Minnesota Supercomputing Institute | www.msi.umn.edu University of Minnesta | umn.edu lparsons@umn.edu | 612-624-4466 |