TABLE 3.

General characteristics of the S-layer proteins in L. acidophilus NCFM

ProteinGene locusGene length (bp)Predicted mature protein size (amino acids)Molecular mass of predicted mature protein (kDa)Predicted pI% Hydrophobic residuesaTop BLASTP hit
ProteinGenBank accession no. of orthologE-valueAmino acid identityb
SlpALBA01691,335413469.4947.4Surface layer protein (L. helveticus) CAB46984 3e-156329/446 (73)
SlpBLBA01751,374426479.4548SB protein (L. acidophilus) CAA61561 0.00e + 00449/457 (98)
SlpXLBA05121,500469519.4344.1Surface layer protein HAP50 (L. acidophilus) AAF65561 4e-127273/506 (53)
  • a Alanine, glycine, isoleucine, leucine, methionine, phenylalanine, proline, tryptophan, tyrosine, and valine.

  • b The numbers in parentheses are percentages.