Complex alpha and beta mannan foraging by the human gut bacteria

Deepesh, Panwar and Shubhashini, A. and Mukesh, Kapoor (2023) Complex alpha and beta mannan foraging by the human gut bacteria. Biotechnology Advances, 66. pp. 1-17.

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Abstract

The human gut microbiota (HGM), a community of trillions of microbes, underscores its contribution by impacting many facets of host health and disease. In the HGM, Bacteroidota and Bacillota represent dominant bacterial phyla, which mainly rely on the glycans recalcitrant to host digestion to meet their energy requirements. Accordingly, the impact of dietary and host-derived glycans in the assembly and operation of these dominant microbial communities continues to be an area of active research. Among various glycans, mannans represent an integral component of the human diet. Apart from their health effects, the diverse and complex mannan structures bears molecular signatures that alter the expression of specific gene clusters in selected Bacteroidota and Bacillota species. Both the phyla possess variable and sophisticated loci of mannan sensing proteins, hydrolytic enzymes, transporters, and other metabolic proteins to sense, capture and utilize mannans as an energy source. The current review summarizes mannan structural diversity, and strategies opted by select bacterial species of the HGM to forage mannans by focusing primarily on glycoside hydrolases and their effects on host health and metabolism.

Item Type:	Article
Uncontrolled Keywords:	Mannan metabolism, Bacteroidota, Bacillota, Glycoside hydrolases (GHs), Polysaccharide Utilization Loci (PUL) Regulators, Transporters
Subjects:	500 Natural Sciences and Mathematics > 04 Chemistry and Allied Sciences > 28 Polysaccharide Chemistry 600 Technology > 08 Food technology > 10 Food Microorganisms
Divisions:	Fermentation Technology and Bioengineering
Depositing User:	Somashekar K S
Date Deposited:	05 Mar 2025 11:17
Last Modified:	05 Mar 2025 11:17
URI:	http://ir.cftri.res.in/id/eprint/19194

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