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 …

BACKGROUND Nearly every plant, animal, and environment on earth is host to a diverse
community of microorganisms that influence each other and their environment …

Abstract Interactive Tree Of Life (http://itol. embl. de) is a web-based tool for the display,
manipulation and annotation of phylogenetic trees. It is freely available and open to …

We investigated the requirement of 15 human butyrate-producing gut bacterial strains for
eight B vitamins and the proteinogenic amino acids by a combination of genome sequence …

Eukaryotic microalgae and prokaryotic cyanobacteria are the major components of the
phytoplankton. Determining factors that govern growth of these primary producers, and how …

The vitamin B12 family of cofactors known as cobamides are essential for a variety of
microbial metabolisms. We used comparative genomics of 11,000 bacterial species to …

The only known source of vitamin B12 (adenosylcobalamin) is from bacteria and archaea.
Here, using genetic and metabolic engineering, we generate an Escherichia coli strain that …

Organisms within all domains of life require the cofactor cobalamin (vitamin B12), which is
produced only by a subset of bacteria and archaea. On the basis of genomic analyses …

Microbiota and aging : Current Opinion in Clinical Nutrition & Metabolic Care Microbiota and
aging : Current Opinion in Clinical Nutrition & Metabolic Care Log in or Register Subscribe to …

Cobalamin (vitamin B12) is an essential enzyme cofactor for most branches of life. Despite
the potential importance of this cofactor for soil microbial communities, the producers and …