Bifidobacterium carbohydrate-active enzymes (Bifidobacterium CAZymes)

Bifidobacterium carbohydrate-active enzymes (CAZymes) are a specialized suite of enzymes, primarily glycoside hydrolases, that enable Bifidobacterium species to metabolize complex, non-digestible carbohydrates in the human gut (O'Callaghan & van Sinderen, 2016). These enzymes are central to the symbiotic relationship between Bifidobacteria and the host, as they break down dietary fibers and human milk oligosaccharides (HMOs) that escape digestion in the upper gastrointestinal tract (Turroni et al., 2018). The metabolic activity of these enzymes results in the production of short-chain fatty acids (SCFAs), such as acetate and lactate, which maintain intestinal homeostasis and support immune function (Sakanaka et al., 2020). In therapeutic contexts, these enzymes are targeted by prebiotics like inulin and galactooligosaccharides to selectively promote the growth of beneficial Bifidobacteria, thereby treating dysbiosis and associated conditions like inflammatory bowel disease (Gibson et al., 2017). Furthermore, specific glycosidases are critical for the establishment of the infant microbiome, where they process HMOs to protect against neonatal infections (Bode, 2012). Understanding the diversity and specificity of these enzymes is essential for developing precision microbiome-modulating therapies.

Other names

Bifidobacterial glycosidasesBifidobacterium glycoside hydrolasesBifidobacterial CAZymesBifidobacterium carbohydrate-degrading enzymes

Substrate-specific hydrolysis of glycosidic bonds in complex glycans, facilitating selective bacterial fermentation and the production of health-promoting short-chain fatty acids (Gibson et al., 2017).