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Biodiversity of mannose-specific adhesion in Lactobacillus plantarum revisited: strain-specific domain composition of the mannose-adhesin

In: Beneficial Microbes
Authors:
G. Gross 1NIZO Food Research, Health and Safety, P.O. Box 20, 6710 BA Ede, the Netherlands
2Animal Breeding and Genomics Centre, Animal Sciences Group of Wageningen UR, P.O. Box 65, 8200 AB Lelystad, the Netherlands

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J. Snel 1NIZO Food Research, Health and Safety, P.O. Box 20, 6710 BA Ede, the Netherlands

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J. Boekhorst 3Center for Molecular and Biomolecular Informatics, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6500 HB Nijmegen, the Netherlands

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M.A. Smits 2Animal Breeding and Genomics Centre, Animal Sciences Group of Wageningen UR, P.O. Box 65, 8200 AB Lelystad, the Netherlands

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M. Kleerebezem 1NIZO Food Research, Health and Safety, P.O. Box 20, 6710 BA Ede, the Netherlands
4Laboratory of Microbiology, Wageningen University, Dreijenplein 10, 6703 HB Wageningen, the Netherlands; michiel.kleerebezem@nizo.nl

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Open Access

Abstract

Recently, we have identified the mannose-specific adhesin encoding gene (msa) of Lactobacillus plantarum. In the current study, structure and function of this potentially probiotic effector gene were further investigated, exploring genetic diversity of msa in L. plantarum in relation to mannose adhesion capacity. The results demonstrate that there is considerable variation in quantitative in vitro mannose adhesion capacity, which is paralleled by msa gene sequence variation. The msa genes of different L. plantarum strains encode proteins with variable domain composition. Construction of L. plantarum 299v mutant strains revealed that the msa gene product is the key-protein for mannose adhesion, also in a strain with high mannose adhering capacity. However, no straightforward correlation between adhesion capacity and domain composition of Msa in L. plantarum could be identified. Nevertheless, differences in Msa sequences in combination with variable genetic background of specific bacterial strains appears to determine mannose adhesion capacity and potentially affects probiotic properties. These findings exemplify the strain-specificity of probiotic characteristics and illustrate the need for careful and molecular selection of new candidate probiotics.

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