Supplementary Material Additional file 1 L. amylovorus slp sequences. A .docx-file showing the nucleotide and deduced amino acid sequences of the slp genes of the L. amylovorus strains studied. Click here for file Additional file 2 Amino acid sequence alignment of L. amylovorus, L. acidophilus and L. crispatus S-layer proteins. A .tiff-image showing the alignment of the amino acid sequences of the surface-located Slp:s of the L. amylovorus strains studied, SlpA of L. acidophilus NCFM (LA, GenBank AAV42070) and CbsA of L. crispatus JCM 5810 (LC, GenBank AF001313), aligned by ClustalW available at http://www.ebi.ac.uk/Tools/msa/clustalw2/. Click here for file