Hydrogen sulfide (H 2 S) is an important signaling molecule in colorectal cancer (CRC). It is
produced in the colon by the catalytic synthesis of the colonocytes' enzymatic systems and …

Almost the entire seafloor is covered with sediments that can be more than 10 000 m thick
and represent a vast microbial ecosystem that is a major component of Earth's element and …

Figure 1 iML1515 genome-scale reconstruction.(a) The iML1515 model contains 1,515
open reading frames that encode enzymes that catalyze 2,719 reactions involving 1,192 …

EcoCyc (EcoCyc. org) is a freely accessible, comprehensive database that collects and
summarizes experimental data for Escherichia coli K-12, the best-studied bacterial model …

To the Editor: Somatic recombination and accumulation of mutations in VDJ segments result
in vast heterogeneity of T-cell receptor (TCR) and immunoglobulin repertoires1, 2. High …

About half the carbon fixed by phytoplankton in the ocean is taken up and metabolized by
marine bacteria, a transfer that is mediated through the seawater dissolved organic carbon …

Dissolved organic matter (DOM) in the oceans is one of the largest pools of reduced carbon
on Earth, comparable in size to the atmospheric CO2 reservoir. A vast number of …

Marine microorganisms play crucial roles in Earth's element cycles through the production
and consumption of organic matter. One of the elements whose fate is governed by …

Hydrogen sulfide (H2S) production in the intestinal microbiota has many contributions to
human health and disease. An important source of H2S in the human gut is anaerobic …

In the surface ocean, phytoplankton transform inorganic substrates into organic matter that
fuels the activity of heterotrophic microorganisms, creating intricate metabolic networks that …