منابع مشابه
Molecular biology of microbial ureases.
Urease (urea amidohydrolase; EC 3.5.1.5) catalyzes the hydrolysis of urea to yield ammonia and carbamate. The latter compound spontaneously decomposes to yield another molecule of ammonia and carbonic acid. The urease phenotype is widely distributed across the bacterial kingdom, and the gene clusters encoding this enzyme have been cloned from numerous bacterial species. The complete nucleotide ...
متن کاملMolecular biology of microbial hydrogenases.
Hydrogenases (H2ases) are metalloproteins. The great majority of them contain iron-sulfur clusters and two metal atoms at their active center, either a Ni and an Fe atom, the [NiFe]-H2ases, or two Fe atoms, the [FeFe]-H2ases. Enzymes of these two classes catalyze the reversible oxidation of hydrogen gas (H2 <--> 2 H+ + 2 e-) and play a central role in microbial energy metabolism; in addition to...
متن کاملPlant ureases: roles and regulation.
Both urea and urease were subjects of early scientific investigations. Urea was the first organic molecule to be synthesized and jack bean urease was the first enzyme ever to be crystallized. About 50 years later it was shown to be the first nickel metalloenzyme. Since then, nickel-dependent ureases have been isolated from many bacteria, fungi and higher plants. They have similar structures and...
متن کاملEcosystems biology of microbial metabolism.
The metabolic capabilities of many environmentally and medically important microbes can be quantitatively explored using systems biology approaches to metabolic networks. Yet, as we learn more about the complex microbe-microbe and microbe-environment interactions in microbial communities, it is important to understand whether and how system-level approaches can be extended to the ecosystem leve...
متن کاملBiology of microbial communities--interview.
Video Link The video component of this article can be found at http://www.jove.com/video/205/ Disclosures The authors have nothing to disclose.
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ژورنال
عنوان ژورنال: Microbiological Reviews
سال: 1995
ISSN: 0146-0749
DOI: 10.1128/mr.59.3.451-480.1995