منابع مشابه
Anaerobic benzene degradation by bacteria
Benzene is a widespread and toxic contaminant. The fate of benzene in contaminated aquifers seems to be primarily controlled by the abundance of oxygen: benzene is aerobically degraded at high rates by ubiquitous microorganisms, and the oxygen-dependent pathways for its breakdown were elucidated more than 50 years ago. In contrast, benzene was thought to be persistent under anoxic conditions un...
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In anaerobic environments rich in decaying plant material, the decomposition of cellulose is brought about by complex communities of interacting microorganisms. Because the substrate, cellulose, is insoluble, bacterial and fungal degradation occurs exocellularly, either in association with the outer cell envelope layer or extracellularly. Products of cellulose hydrolysis are available as carbon...
متن کاملConverging on a mechanism for choline degradation.
I n PNAS, Craciun and Balskus (1) combine biochemical intuition with modern genome mining techniques to discover the elusive enzyme responsible for catalyzing the degradation of choline (1, Scheme 1). Choline is an essential nutrient in higher organisms that is required for the biosynthesis of the neurotransmitter acetylcholine and the head group of several phospholipids, and that serves as a s...
متن کاملAnaerobic degradation of polycyclic aromatic hydrocarbons.
Polycyclic aromatic hydrocarbons (PAHs) are among the most important contaminants of groundwater. The 2- and 3-ring PAHs are of particular concern because they are water soluble in the 1-200 mug/l range and are transported with the groundwater over significant distances. Anaerobic degradation of PAH has been demonstrated in several microcosm studies with nitrate, ferric iron, or sulfate as elec...
متن کاملAnaerobic Degradation of the Benzene Nucleus by
A bacterium was isolated by elective culture with p-hydroxybenzoate as substrate and nitrate as electron acceptor. It grew either aerobically or anaerobically, by nitrate respiration, on a range of aromatic compounds. The organism was identified as a pseudomonad and was given the trivial name Pseudomonas PN-1. Benzoate and p-hydroxybenzoate were metabolized aerobically via protocatechuate, foll...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1960
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)64514-4