Genetic and biochemical approaches towards unravelling the degradation of gallotannins by Streptococcus gallolyticus.

ABSTRACT:

Background

Herbivores have developed mechanisms to overcome adverse effects of dietary tannins through the presence of tannin-resistant bacteria. Tannin degradation is an unusual characteristic among bacteria. Streptococcus gallolyticus is a common tannin-degrader inhabitant of the gut of herbivores where plant tannins are abundant. The biochemical pathway for tannin degradation followed by S. gallolyticus implies the action of tannase and gallate decarboxylase enzymes to produce pyrogallol, as final product. From these proteins, only a tannase (TanBSg) has been characterized so far, remaining still unknown relevant proteins involved in the degradation of tannins.

Results

In addition to TanBSg, genome analysis of S. gallolyticus subsp. gallolyticus strains revealed the prese

SUBMITTER: Jimenez N 

PROVIDER: S-EPMC4218992 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature