THE regulation of enzyme activity by cellular metabolites in micro-organisms is usually exerted by feedback control, an initial enzyme of a pathway being controlled by an end-product of that pathway.

“Infection caused by pathogenic bacteria (especially Gram-negative pathogens), including Escherichia coli, Klebsiella pneumonia, Pasteurella multocida and Pseudomonas aeruginosa, severely threatens ...

Mononuclear cells express enzymes involved in the NO/cyclic guanosine monophosphate (cGMP) generating system, as well as PDE5. The objective of the study was to determine the effect of sildenafil ...

Study published in “Science” journal disproves conventional wisdom: citrate synthase can also cleave citrate and not only build it up The citrate cycle: most people will probably remember this ...

High carbon dioxide concentrations are required to allow the central metabolic pathway to run "backwards" / publication in "Nature" The citric acid cycle is an ...