New Strategies on Molecular Biology Applied to Microbial Systematics
نویسندگان
چکیده
منابع مشابه
Molecular Koch's postulates applied to microbial pathogenicity.
Microbial genetics and molecular cloning now permit us to routinely isolate specific genes from a variety of microbial pathogens. Obviously not all genes from pathogenic microorganisms play a role in pathogenicity or virulence. Just as Koch's postulates were formulated to identify the causal relationship between an organism and a specific disease, the notion is presented here that a form of mol...
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 کاملMolecular 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 systematics of New World suboscine birds.
Phylogenetic relationships among New World suboscine birds were studied using nuclear and mitochondrial DNA sequences. New World suboscines were shown to constitute two distinct lineages, one apparently consisting of the single species Sapayoa aenigma, the other made up of the remaining 1000+ species of New World suboscines. With the exception of Sapayoa, monophyly of New World suboscines was s...
متن کاملMolecular biology applied to the laboratory diagnosis of bacterial endophthalmitis.
Bacterial endophthalmitis is a serious but uncommon intraocular infection which frequently results in vision loss. Early diagnosis and appropriate therapy are associated with better visual outcome. Conventional microbiological methods are currently used for microbiological characterization of eyes with suspected endophthalmitis. However, the sensitivity of bacterial detection from aqueous and v...
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ژورنال
عنوان ژورنال: Revista do Instituto de Medicina Tropical de São Paulo
سال: 1997
ISSN: 0036-4665
DOI: 10.1590/s0036-46651997000600007