Multicellular assemblages of microorganisms are ubiquitous in nature, and the proximity
afforded by aggregation is thought to permit intercellular metabolic coupling that can …

The oxidation of methane with sulfate is an important microbial metabolism in the global
carbon cycle. In marine methane seeps, this process is mediated by consortia of anaerobic …

Biosynthesis of the unusual organometallic H-cluster at the active site of the [FeFe]-hydrogenase
requires three accessory proteins, two of which are radical AdoMet enzymes (HydE, …

The organometallic H cluster at the active site of [FeFe]-hydrogenase consists of a 2Fe
subcluster coordinated by cyanide, carbon monoxide, and a nonprotein dithiolate bridged to a […

Many metalloenzymes that inject and extract reducing equivalents at the beginning and the
end of electron transport chains involved in chemiosmosis are suggested, through …

Biomineralization plays a fundamental role in the global silicon cycle. Grasses are known to
mobilize significant quantities of Si in the form of silica biominerals and dominate the …

In an effort to determine the specific protein component(s) responsible for in vitro activation
of the [FeFe] hydrogenase (HydA), the individual maturation proteins HydE, HydF, and HydG …

The evolutionary mechanisms behind the extant distribution of photosynthesis is a point of
substantial contention. Hypotheses range from the presence of phototrophy in the last …

The in vitro activation of the [FeFe] hydrogenase is accomplished by combining Escherichia
coli cell extracts containing the heterologously expressed inactive HydA with extracts in …

Anaerobic methane oxidation in archaea is often presented to operate via a pathway of “reverse
methanogenesis”. However, if the cumulative reactions of a methanogen are run in …