Woese's three kingdoms (161-166) constitute the deepest branching of the known
biosphere. His suggestion to search for a common ancestor has led to the present …

1. The Fundamental Alternatives 2. The First Energy Source for Life (a) Exergonic pyrite
formation (b) The requirement of redox inhibition 3. Pyrite-Surface Bonding 4. Surface …

The nuclear Overhauser effect (NOE) is defined as the change in intensity of one NMR
resonance that occurs when another is saturated. It results from dipole–dipole cross …

In experiments modeling the reactions of the reductive acetyl–coenzyme A pathway at
hydrothermal temperatures, it was found that an aqueous slurry of coprecipitated NiS and …

Methyl–coenzyme M reductase (MCR), the enzyme responsible for the microbial formation
of methane, is a 300-kilodalton protein organized as a hexamer in an α2β2γ2 arrangement …

Tetrapyrroles: the pigments of life - Natural Product Reports (RSC Publishing) DOI:10.1039/
B002635M Royal Society of Chemistry View PDF VersionPrevious ArticleNext Article DOI: 10.1039 …

Recently, a microbial consortium was shown to couple the anaerobic oxidation of methane
to denitrification, predominantly in the form of nitrite reduction to dinitrogen gas. This …

Chlorophylls are a fundamental class of tetrapyrroles and function as the central reaction
center, accessory and photoprotective pigments in photosynthesis. Their unique individual …

Large amounts (estimates range from 70 Tg per year to 300 Tg per year) of the potent
greenhouse gas methane are oxidized to carbon dioxide in marine sediments by …

Tetrapyrrole-containing proteins are one of the most fundamental classes of enzymes in
nature and it remains an open question to give a chemical rationale for the multitude of …