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EpsA is an essential gene in exopolysaccharide production in Lactobacillus johnsonii FI9785

Dertli E.; Mayer M.J.; Colquhoun I.J.; Narbad A. (John Wiley and Sons Ltd, 2016)

Lactobacillus johnsonii FI9785 has an eps gene cluster which is required for the biosynthesis of homopolymeric exopolysaccharides (EPS)-1 and heteropolymeric EPS-2 as a capsular layer. The first gene of the cluster, epsA, ...

Impact of the exopolysaccharide layer on biofilms, adhesion and resistance to stress in Lactobacillus johnsonii FI9785

Dertli E.; Mayer M.J.; Narbad A. (BioMed Central Ltd., 2015)

Background: The bacterial cell surface is a crucial factor in cell-cell and cell-host interactions. Lactobacillus johnsonii FI9785 produces an exopolysaccharide (EPS) layer whose quantity and composition is altered in ...

Structure and biosynthesis of two exopolysaccharides produced by lactobacillus johnsonii FI9785

Dertli E.; Colquhoun I.J.; Gunning A.P.; Bongaerts R.J.; Le Gall G.; Bonev B.B.; Mayer M.J.; Narbad A. (2013)

Exopolysaccharides were isolated and purified from Lactobacillus johnsonii FI9785, which has previously been shown to act as a competitive exclusion agent to control Clostridium perfringens in poultry. Structural analysis ...

Spontaneous Mutation Reveals Influence of Exopolysaccharide on Lactobacillus johnsonii Surface Characteristics

Horn N.; Wegmann U.; Dertli E.; Mulholland F.; Collins S.R.A.; Waldron K.W.; Bongaerts R.J.; Mayer M.J.; Narbad A. (2013)

As a competitive exclusion agent, Lactobacillus johnsonii FI9785 has been shown to prevent the colonization of selected pathogenic bacteria from the chicken gastrointestinal tract. During growth of the bacterium a rare but ...