Protein Helps Probiotics Stick

NORWICH, EnglandA new crystallized protein may help probiotics stick to the digestive tract, according to new research funded by Biotechnology and Biological Sciences Research Council (J Biol Chem. 2009 Nov 20;284(47):32444-53). This protein, which helps gut bacteria bind to the gastrointestinal tract, has recently been crystallized by scientists and could potentially be used in probiotic products to help enhance bioavailability.

The protein was obtained from a strain of Lactobacillus reuteri, a lactic acid bacterium naturally found in the gastrointestinal tract. By crystallizing a type of this protein called Mub2, the probiotic strain may be able to better interact with its host within the digestive tract.

They also found these proteins recognize human immunoglobulin proteins, which are an integral part of the immune system. Therefore, Mub2 may also play a role in encouraging immune health benefits of probiotics.