*Free-radical theory of aging

Additionally they suggest antioxidant SOD and catalase are involved in the inhibition of this nutrient signalling pathway. The ...

*Superoxide dismutase

Catalase Peroxidase Jiaogulan NADPH oxidase, an enzyme which produces superoxide PDB: 1VAR​; Borgstahl GE, Parge HE, Hickey MJ ... Hydrogen peroxide is also damaging and is degraded by other enzymes such as catalase. Thus, SOD is an important antioxidant ...

*Catalase

If not, the organism is 'catalase-negative'. Streptococcus and Enterococcus spp. are catalase-negative. While the catalase test ... Boon EM, Downs A, Marcey D. "Proposed Mechanism of Catalase". Catalase: H2O2: H2O2 Oxidoreductase: Catalase Structural Tutorial ... Catalase catalyzes the following reaction: 2 H2O2 → 2 H2O + O2 The presence of catalase in a microbial or tissue sample can be ... Catalase has been shown to interact with the ABL2 and Abl genes. Infection with the murine leukemia virus causes catalase ...

*Catalase-peroxidase

Hochman, A.; Goldberg, I. (1991). "Purification and characterization of a catalase-peroxidase and a typical catalase from the ... Catalase-peroxidase (EC 1.11.1.21, katG (gene)) is an enzyme with systematic name donor:hydrogen-peroxide oxidoreductase. This ... Catalase-peroxidase at the US National Library of Medicine Medical Subject Headings (MeSH) Molecular and Cellular Biology ... Fraaije, M.W.; Roubroeks, H.P.; van Berkel, W.H.J. (1996). "Purification and characterization of an intracellular catalase- ...

*Catalase-related immune-responsive domain

In molecular biology, the catalase-related immune-responsive domain is a protein domain found in catalases. This domain carries ... Identification of amphipatic immunomodulatory domains in Helicobacter pylori catalase". Immunol. Lett. 96 (2): 261-75. doi: ...

*Mycobacterium pyrenivorans

Catalase-positive. Nitrate reduction test shows a weak reaction. Does not hydrolyse Tween 80 within 10 days. Mineralizes ...

*Alexander Dounce

Description of the first crystallization of catalase Kay, E. R. M.; Simmons, N. S.; Dounce, A. L. (1952). "An improved ... Together with Sumner, he achieved the first crystallization of the enzyme catalase in 1937. In 1941, Dounce moved to the ... For the remainder of his career, Dounce continued his research on nuclei and their contents, catalase, and protein ... Dounce's PhD thesis Sumner, J. B.; Dounce, A. L. (1937). "Crystalline Catalase". Science. 85 (2206): 366-367. doi:10.1126/ ...

*ACAA1

2000). "Catalase-less peroxisomes. Implication in the milder forms of peroxisome biogenesis disorder". J. Biol. Chem. 275 (47 ...

*Mycobacterium brumae

Production of thermostable catalase. Positive for β-glucosidase, nitrate reductase, penicillinase, trehalase, urease and iron ...

*Lactobacillales

LAB are catalase negative. They consist of the organelles of a simple bacterial structure. LAB are amongst the most important ...

*Clostridium tertium

A negative catalase test is an easy tool to differentiate C. tertium from Bacillus spp., which are catalase positive. Also, C. ...

*Streptococcus pyogenes

Streptococci are catalase-negative. S. pyogenes can be cultured on blood agar plates. Under ideal conditions, it has an ...

*Enterobacteriaceae

Catalase test on nutrient agar tests for the production of catalase enzyme, which splits hydrogen peroxide and releases oxygen ... Catalase reactions vary among Enterobacteriaceae. Many members of this family are a normal part of the gut flora found in the ...

*Diagnostic microbiology

The catalase test tests whether a microbe produce the enzyme catalase, which catalyzes the breakdown of hydrogen peroxide. ... "Catalase and Oxidase Test" (PDF). Austin CC. "CLO Test: Reasons, Procedure and Results". www.medicalhealthtests.com. Retrieved ...

*Bordetella trematum

B. trematum is catalase positive. It is unique in being oxidase negative, since all other species of Bordetella are oxidase ...

*DNA-binding protein from starved cells

Also shows a weak catalase activity. Dps dodecamers can condense DNA in vitro through a cooperative binding mechanism. Deletion ...

*Oleispira antarctica

Oxidase and catalase enzymes were present. Its principle fatty acids are monounsaturated, with principle fatty acids being C18: ...

*Micrococcus luteus

It is urease and catalase positive. An obligate aerobe, M. luteus is found in soil, dust, water and air, and as part of the ...

*Helicobacter pylori

It produces oxidase, catalase, and urease. Outer membrane. H. pylori possesses five major outer membrane protein families. The ...

*Amphibacillus xylanus

It is catalase and oxidase negative. This helps to explain better the unique method of metabolism on which the organism relies ... nov., a facultatively anaerobic sporeforming xylan-digesting bacterium which lacks cytochrome, quinone, and catalase. ...

*Iron

Boon EM, Downs A, Marcey D. "Proposed Mechanism of Catalase". Catalase: H2O2: H2O2 Oxidoreductase: Catalase Structural Tutorial ... Many enzymes vital to life contain iron, such as catalase, lipoxygenases, and IRE-BP. Hemoglobin is an oxygen carrier that ... Examples of proteins found in higher organisms include hemoglobin, cytochrome (see high-valent iron), and catalase. The average ...

*Pseudomonas aeruginosa

It is citrate, catalase, and oxidase positive. It is found in soil, water, skin flora, and most man-made environments ...

*Neisseria elongata

Unlike other Neisseria it is catalase negative. N. elongata is the most ancestral of the human Neisseria. "Neisseria". LPSN. ...

*Mycobacterium brisbanense

Semi-quantitative catalase activity is weakly positive (. ...

*Enterobacter cloacae

It is oxidase-negative and catalase-positive. Enterobacter cloacae has been used in a bioreactor-based method for the ...