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Aquabacterium
The species of the genus ''Aquabacterium'' are motile, rod-shaped, Gram-negative, oxidase-positive, catalase-negative bacteria Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among ... which were isolated from drinking water biofilms in Berlin. Identified species include '' Aquabacterium citratiphilum'', '' Aquabacterium parvum'', and '' Aquabacterium commune''. Three bacterial strains isolated from biofilms of the Berlin drinking water system were characterized with respect to their morphological and physiological properties and their taxonomic position. Phenotypically, the bacteria investigated were motile, Gram-negative rods, oxidase-positive and catalase-negative, and contained polyalkanoates and polyphosphate as storage polymers. They displayed a microaerophilic growth behaviour and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquabacterium Commune
''Aquabacterium commune'' is a Gram-negative, catalase-negative bacterium of the genus ''Aquabacterium'' in the family Comamonadaceae, which was isolated with '' Aquabacterium citratiphilum'' and '' Aquabacterium parvum'' from biofilms of drinking water in Berlin. ''Aquabacterium commune'' has got a single polar flagellum A flagellum (; ) is a hairlike appendage that protrudes from certain plant and animal sperm cells, and from a wide range of microorganisms to provide motility. Many protists with flagella are termed as flagellates. A microorganism may have f ... and its colonies are transparent. References External linksType strain of ''Aquabacterium commune'' at Bac''Dive'' - the Bacterial Diversity Metadatabase Comamonadaceae Bacteria described in 1999 {{Betaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquabacterium Citratiphilum
''Aquabacterium citratiphilum'' is a Gram-positive, catalase-negative bacterium from the genus ''Aquabacterium'' and family Comamonadaceae, which was isolated with ''Aquabacterium commune'' and '' Aquabacterium parvum'' from biofilms of drinking water in Berlin Berlin ( , ) is the capital and largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's most populous city, according to population within city limits. One of Germany's sixteen constitue .... References External linksType strain of ''Aquabacterium citratiphilum'' at Bac''Dive'' - the Bacterial Diversity Metadatabase Comamonadaceae Bacteria described in 1998 {{Betaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquabacterium Parvum
''Aquabacterium parvum'' is a Gram-negative, oxidase-positive, catalase-negative bacterium of the genus ''Aquabacterium'' in the family Comamonadaceae which was isolated with ''Aquabacterium commune'' and ''Aquabacterium citratiphilum'' from biofilms of Berlin Berlin ( , ) is the capital and largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's most populous city, according to population within city limits. One of Germany's sixteen constitue ...s drinking water. References External linksType strain of ''Aquabacterium parvum'' at Bac''Dive'' - the Bacterial Diversity Metadatabase Comamonadaceae Bacteria described in 1999 {{Betaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquabacterium Olei
''Aquabacterium olei'' is a Gram-negative, non-spore-forming and motile bacterium of the genus ''Aquabacterium'' which has been isolated from oil-contaminated soil in Korea Korea ( ko, 한국, or , ) is a peninsular region in East Asia. Since 1945, it has been divided at or near the 38th parallel, with North Korea (Democratic People's Republic of Korea) comprising its northern half and South Korea (Republic o .... ''Aquabacterium olei'' can degrade oil. References External linksType strain of ''Aquabacterium olei'' at Bac''Dive'' - the Bacterial Diversity Metadatabase Comamonadaceae Bacteria described in 2015 {{Betaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquabacterium Fontiphilum
''Aquabacterium fontiphilum'' is a Gram-negative non-spore-forming, motile bacterium of the genus ''Aquabacterium'' in the family Comamonadaceae, which was isolated from a water sample from the Nature Valley in Hsinchu County in Taiwan. ''Aquabacterium fontiphilum'' has a single polar flagellum A flagellum (; ) is a hairlike appendage that protrudes from certain plant and animal sperm cells, and from a wide range of microorganisms to provide motility. Many protists with flagella are termed as flagellates. A microorganism may have f ... and its colonies are semitransparent. References External linksType strain of ''Aquabacterium fontiphilum'' at Bac''Dive'' - the Bacterial Diversity Metadatabase Comamonadaceae Bacteria described in 2009 {{Betaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquabacterium Limnoticum
''Aquabacterium limnoticum'' is a Gram-negative, facultatively anaerobic, short-rod-shaped, non-spore-forming and non-motile bacterium of the genus ''Aquabacterium'' which has been isolated from a freshwater spring in Taiwan Taiwan, officially the Republic of China (ROC), is a country in East Asia, at the junction of the East and South China Seas in the northwestern Pacific Ocean, with the People's Republic of China (PRC) to the northwest, Japan to the nort .... References External linksType strain of ''Aquabacterium limnoticum'' at Bac''Dive'' - the Bacterial Diversity Metadatabase Comamonadaceae Bacteria described in 2012 {{Betaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquabacterium Hongkongensis
''Aquabacterium hongkongensis'' is a bacterium of the genus ''Aquabacterium'', in the family Comamonadaceae The Comamonadaceae are a family of the Betaproteobacteria.Willems A., J. De Ley, M. Gillis, and K. Kersters. ''Comamonadaceae, a New Family Encompassing the Acidovorans rRNA Complex, Including Variovorax paradoxus gen. nov.,comb. nov. for Alcali .... References Comamonadaceae Bacteria described in 2009 {{Betaproteobacteria-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burkholderiales
The Burkholderiales are an order of Pseudomonadota.George M. Garrity: '' Bergey's Manual of Systematic Bacteriology''. 2. Auflage. Springer, New York, 2005, Vol. 2: ''The Proteobacteria Part C: The Alpha-, Beta-, Delta-, and Epsilonproteabacteria'' Like all Pseudomonadota, they are Gram-negative. They include several pathogenic bacteria, including species of ''Burkholderia'', ''Bordetella'', and ''Ralstonia''. They also include '' Oxalobacter'' and related genera, which are unusual in using oxalic acid as their source of carbon. Other well-studied genera include ''Alcaligenes'', '' Cupriavidus'', ''Achromobacter'', ''Comamonas'', '' Delftia'', ''Massilia'', '' Duganella'', '' Janthinobacterium'', ''Polynucleobacter'' (important freshwater bacterioplankton), non-pathogenic ''Paraburkholderia'', '' Caballeronia'', '' Polaromonas'', ''Thiomonas'', ''Collimonas'', '' Hydrogenophaga'', ''Sphaerotilus'', '' Variovorax'', '' Acidovorax'', '' Rubrivivax'' and ''Rhodoferax'' (both members ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxidase
In biochemistry, an oxidase is an enzyme that catalyzes oxidation-reduction reactions, especially one involving dioxygen (O2) as the electron acceptor. In reactions involving donation of a hydrogen atom, oxygen is reduced to water (H2O) or hydrogen peroxide (H2O2). Some oxidation reactions, such as those involving monoamine oxidase or xanthine oxidase, typically do not involve free molecular oxygen. The oxidases are a subclass of the oxidoreductases. Examples An important example is cytochrome c oxidase, the key enzyme that allows the body to employ oxygen in the generation of energy and the final component of the electron transfer chain. Other examples are: * Glucose oxidase * Monoamine oxidase * Cytochrome P450 oxidase * NADPH oxidase * Xanthine oxidase * L-gulonolactone oxidase * Laccase * Lysyl oxidase * Polyphenol oxidase * Sulfhydryl oxidase. This enzyme oxidises thiol groups. Oxidase test In microbiology, the oxidase test is used as a phenotypic characteristic for t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biofilms
A biofilm comprises any syntrophic consortium of microorganisms in which cells stick to each other and often also to a surface. These adherent cells become embedded within a slimy extracellular matrix that is composed of extracellular polymeric substances (EPSs). The cells within the biofilm produce the EPS components, which are typically a polymeric conglomeration of extracellular polysaccharides, proteins, lipids and DNA. Because they have three-dimensional structure and represent a community lifestyle for microorganisms, they have been metaphorically described as "cities for microbes". Biofilms may form on living or non-living surfaces and can be prevalent in natural, industrial, and hospital settings. They may constitute a microbiome or be a portion of it. The microbial cells growing in a biofilm are physiologically distinct from planktonic cells of the same organism, which, by contrast, are single cells that may float or swim in a liquid medium. Biofilms can form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bacterium
Bacteria (; singular: bacterium) are ubiquitous, mostly free-living organisms often consisting of one biological cell. They constitute a large domain of prokaryotic microorganisms. Typically a few micrometres in length, bacteria were among the first life forms to appear on Earth, and are present in most of its habitats. Bacteria inhabit soil, water, acidic hot springs, radioactive waste, and the deep biosphere of Earth's crust. Bacteria are vital in many stages of the nutrient cycle by recycling nutrients such as the fixation of nitrogen from the atmosphere. The nutrient cycle includes the decomposition of dead bodies; bacteria are responsible for the putrefaction stage in this process. In the biological communities surrounding hydrothermal vents and cold seeps, extremophile bacteria provide the nutrients needed to sustain life by converting dissolved compounds, such as hydrogen sulphide and methane, to energy. Bacteria also live in symbiotic and parasitic relationshi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Catalase
Catalase is a common enzyme found in nearly all living organisms exposed to oxygen (such as bacteria, plants, and animals) which catalyzes the decomposition of hydrogen peroxide to water and oxygen. It is a very important enzyme in protecting the cell from oxidative damage by reactive oxygen species (ROS). Catalase has one of the highest turnover numbers of all enzymes; one catalase molecule can convert millions of hydrogen peroxide molecules to water and oxygen each second. Catalase is a tetramer of four polypeptide chains, each over 500 amino acids long. It contains four iron-containing heme groups that allow the enzyme to react with hydrogen peroxide. The optimum pH for human catalase is approximately 7, and has a fairly broad maximum: the rate of reaction does not change appreciably between pH 6.8 and 7.5. The pH optimum for other catalases varies between 4 and 11 depending on the species. The optimum temperature also varies by species. Structure Human catalase forms a t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
