Abstract Vitamin B12 (cobalamin, Cbl) is a nutrient essential to human health. Due to its
complex structure and dual cofactor forms, Cbl undergoes a complicated series of …

Porphyrins feature prominently in nature, be it as enzymatic cofactors, electron and exciton
shuffles, as photoactive dyes, or as signaling substances. Their involvement in the …

The gut microbiota produce hundreds of bioactive compounds, including B‐vitamins, which
play significant physiological roles in hosts by supporting the fitness of symbiotic species …

The gut microbiota is composed of a huge number of different bacteria, that produce a large
amount of compounds playing a key role in microbe selection and in the construction of a …

Food-related lactic acid bacteria (LAB) as well as human gut commensals such as
bifidobacteria can de novo synthesize and supply vitamins. This is important since humans …

Modified tetrapyrroles are large macrocyclic compounds, consisting of diverse conjugation
and metal chelation systems and imparting an array of colors to the biological structures that …

The soil microbial community fulfils various functions, such as nutrient cycling and carbon
(C) sequestration, therefore contributing to maintenance of soil fertility and mitigation of …

Chromatin modifications are crucial for development, yet little is known about their dynamics
during differentiation. Hematopoiesis provides a well-defined model to study chromatin state …

The microbial mechanisms and key metabolites that shape the composition of the human
gut microbiota are largely unknown, impeding efforts to manipulate dysbiotic microbial …

Vitamin B12 (cobalamin) is an essential cofactor for two metabolic pathways. It is obtained
principally from food of animal origin. Cobalamin becomes bioavailable through a series of …