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Showing 1 to 20 of 22 for “"Nocardia"”.
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A study of biochemical and morphological aspects of macrophage function in experimental murine Nocardia asteroides and Nocardia brasiliensis infections
… brasiliensis -activated macrophages. Strains of Nocardia organism did not influence macrophage morphology or ultrastructure. The study also shows the biochemical characteristics of plasminogen activator and lysozyme release, but not macrophage morphology and ultrastructure, are modified in the …
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Generation and Characterization of dszB Mutants from Nocardia asteroides A3H1
… can be desulfurized to 2-hydroxybiphenyl by Nocardia asteroides sp. strain A3H1 (A3H1) using the “4S”desulfurization pathway. In the final and rate-limiting step of this pathway, the DszB enzyme catalyzes the hydrolysis of 2-(2’- hydroxyphenyl) benzenesulfinate to form inorganic sulfur and …
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Purification, Characterization, and Active Site Studies of 2-(2'-Hydroxyphenyl) Benzenesulfinate Desulfinase (DSZB) from Nocardia Asteroides Sp. Strain A3H1
Dibenzophene (DBT) and its complex heterocyclic derivatives comprise most of the sulfur that contaminates fossil fuels. The 2-(2´-hydroxyphenyl) benzenesulfinate desulfinase (DszB) enzyme metabolize sulfur from DBT compounds. DszB, one of the four enzymes of the desulfurizing pathway, catalyzes the …
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Biosynthesis of Selected Antibiotics
… Three metabolites previously unreported from Nocardia argetinensis var. Huang (ATCC 31306) were isolated and identified as 18-O-acetylnodusmicin (13), and 18-O-acetylnargenicin (14).
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Detection of filamentous bacteria in activated sludge
… their identification. Of the filaments only Nocardia could be isolated using standard techniques as the growth requirements of the other filaments present are unknown. Attempts were made to prepare a fluorescent antibody to the Nocardia isolate and to an isolate of Sphaerotilus natans …
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The characterisation of actinomycetes isolated from diverse South African sources, with emphasis on the genus Kribbella
… Kineococcus, Kribbella, Micromonospora, Nocardia and Streptomyces were selected for full characterisation. A polyphasic approach combining physiology, chemotaxonomy and phylogenetic analysis was used to characterise these isolates. A number of potentially novel strains belonging to the …
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Structural Insights into Mycobacteriales Galactan Biosynthesis
… here, we provide structural insights into Nocardia brasiliensis GlfT2 (NbrGlfT2) using X-ray crystallography and cryo-electron microscopy. We characterize both the acceptor-bound and membrane-embedded structures of NbrGlfT2 and propose three models for its catalysis: Processive Galactan …
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The Effectiveness of Camphorated Paramonochlorophenol, Metacresyl Acetate, and Prednisolone in Combination as an Antimicrobial Agent
… albicans</em>, <em>Escherichia coli,</em> <em>Nocardia asteroides</em>, <em>Staphylococcus aureus</em>, <em>Streptococcus salivarius</em>, <em>Streptococcus faecalis</em>, and <em>Clostridium perfringens</em>.</p> <p>Based upon a statistical analysis, the following conclusions were made:</p> …
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Metabolomics as a tool in the identification and production of new marine-derived antibiotics from sponges and endosymbiotic bacteria
… were active against T. brucei and M. marinum and Nocardia farcinica were isolated and identified.Metabolomics has become a powerful tool in systems biology which allows us to gain insights into the potential of natural marine isolates for synthesis of significant quantities of promising new …
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The role of actinomycetes in the biodeterioration of wood
… of Streptomyces spp., Nocardia spp., Streptosporangium spp., Micromonospora spp., and Microbispora spp. were used to evaluate decay potential of actinomycetes in Pinus sylvestris L and Tilia vulgaris Hayne. Decay was assessed by weight loss and by micromorphological …
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Structural and Mechanistic Studies on N-Hydroxylating Monooxygenases Involved in Siderophore Biosynthesis
… MbsG from Mycobacterium smegmatis and NbtG from Nocardia farcinica. The detailed chemical mechanism for flavin oxidation in SidA was elucidated for formation of the C4a-hydroperoxyflavin, deprotonation of L-ornithine, and for the chemical steps of hydrogen peroxide elimination and water …
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Factors affecting the growth of Nostocoida limicola II and other filamentous microorganisms in activated sludge systems
… hydrossis</i>, <i>Microthrix parvicella</i>, <i>Nocardia species</i>, <i>Nostocoida limicola II</i>, and Types 0041, 0581, 1851, and 1863.
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Microbial engineering for aldehyde synthesis
… find that a carboxylic acid reductase (Car) from Nocardia iowensis achieves biosynthesis of aldehydes from free fatty acid substrates ranging in carbon chain length from C4 to C10. The use of Car, the engineered host strain, and previously elucidated pathways to free fatty acids enables production …
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Isolation and characterisation of indigenous actinobacteria from diverse South African environments
… Actinomadura strain, one Kineococcus strain, one Nocardia strain, one Nonomuraea strain and one Verrucosispora strain. Two previously isolated Microbispora strains were also characterised. The 17 strains were subjecte d to 16S rRNA gene sequence analysis to determine their closest phylogenetic …
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Analysis of Actinobacterial Biodiversity in Marine Sediment from Gericke's Point (South Africa) and Screening of Isolates for Novel Antimycobacterial Compounds
… the genus level: 26 Streptomyces strains and one Nocardia strain. The partial 16S-rRNA gene sequences obtained for each confirmed actinobacterial isolate were used to determine their phylogenetic positions within their respective genera. Further investigation of specific isolates was done …
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A survey of aquatic lignicolous fungi in the area about Blacksburg, Virginia
… sp. (1), Stagonospora sp. (2); Actinomycetes - Nocardia sp.; Pyrenomycetes - Nectria sp. Two unidentified Dematiaceae and ten unidentified Pyrenomycetes were also collected and described. A comparison of the results of this study with the results of other investigations on aquatic fungi …
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Optimization of intermittent aeration for increased nitrogen removal efficiency and improved settling
… study included Type 0041, Type 0675, Type 0803, Nocardia, Thiothrix I and Thiothrix II. Type 0041 and Type 067 were observed throughout the study and are typical of BNR systems; they arguably do not contribute to settling issues. Type 0803 filaments are linked to low F/M, high SRT systems. It was …
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Enzymatic degradation of egg yolk cholesterol
… oxidases, from Pseudomonas fluorescens (Pf), Nocardia erythropolis (Ne), Brevibacterium species (Bs) and Streptomyces species (Ss), and cholesterol reductase isolated from cucumber leaves to degrade cholesterol in egg yolk was investigated. Incubation of egg yolk with a cholesterol reductase …
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