Catalase is a common enzyme found in nearly all living organisms exposed to oxygen.

Catalase is a tetramer of four polypeptide chains, each over 500 amino acids long .< ref name = Boon_a > It contains four porphyrin heme ( iron ) groups that allow the enzyme to react with the hydrogen peroxide.

Catalase was first noticed in 1818 when Louis Jacques Thénard, who discovered H < sub > 2 </ sub > O < sub > 2 </ sub > ( hydrogen peroxide ), suggested its breakdown is caused by an unknown substance.

Catalase is usually located in a cellular, bipolar environment organelle called the peroxisome.

Catalase is also universal among plants, and many fungi are also high producers of the enzyme.

Catalase is also used in the textile industry, removing hydrogen peroxide from fabrics to make sure the material is peroxide-free.

Catalase is an enzyme that catalyzes the breakdown of hydrogen peroxide in many organisms.

Catalase, which is concentrated in peroxisomes located next to mitochondria, reacts with the hydrogen peroxide to catalyze the formation of water and oxygen.

* Catalase test on nutrient agar tests for the production of catalase enzyme, which splits hydrogen peroxide and releases oxygen gas.

USML-2 Experiments included: the Surface Tension Driven Convection Experiment ( STDCE ), the Drop Physics Module, the Drop Dynamics Experiment ; the Science and Technology of Surface-Controlled Phenomena experiment ; the Geophysical Fluid Flow Cell Experiment ; the Crystal Growth Furnace, the Orbital Processing of High Quality Cadmium Zinc Telluride Compound Semiconductors experiment ; the Study of Dopant Segregation Behavior During the Crystal Growth of Gallium Arsenide ( GaAs ) in Microgravity experiment ; the Crystal Growth of Selected II-VI Semiconducting Alloys by Directional Solidification experiment ; the Vapor Transport Crystal Growth of Mercury Cadmium Tellurida in Microgravity experiment ; the Zeolite Crystal Growth Furnace ( ZCG ), the Interface Configuration Experiment ( ICE ), the Oscillatory Thermocapillary Flow Experiment ; the Fiber Supported Droplet Combustion Experiment ; the Particle Dispersion Experiment ; the Single-Locker Protein Crystal Growth experiment ; ( including the Protein Crystallization Apparatus for Microgravity ( PCAM ) and the Diffusion-controlled Crystallization Apparatus for Microgravity ( DCAM )); the Crystal Growth by Liquid-Liquid Diffusion, the Commercial Protein Crystal Growth experiment ; the Advanced Protein Crystallization Facility, Crystallization of Apocrystacyanin C experiment ; Crystal Structure Analysis of the Bacteriophage Lambda Lysozyme, Crystallization of RNA Molecules Under Microgravity Conditions experiment ; Crystallization of the Protein Grb2 and Triclinic Lysozyme experiment ; Microgravity Crystallization of Thermophilic Aspartyl-tRNA Synthetase and Thaumatin experiment ; Crystallization in a Microgravity Environment of CcdB experiment ; A Multivariate Analysis of X-ray Diffraction Data Obtained from Glutathione S Transferase experiment ; Protein Crystal Growth: Light-driven Charge Translocation Through Bacteriorhodopsin experiment ; Crystallization of Ribosome experiment ; Crystallization of Sulfolobus Solfataricus Alcohol Dehydrogenase experiment ; Crystallization of Turnip Yellow Mosaic Virus, Tomato Aspermy Virus, Satellite Panicum Mosaic Virus, Canavalin, Beef Liver Catalase, Concanavalin B experiment ; Crystallization of the Epidermal Growth Factor ( EGF ); Structure of the Membrane-Embedded Protein Complex Photosystem I ; Crystallization of Visual Pigment Rhodopsin ; Commercial Generic Bioprocessing Apparatus ; Astroculture Facility and Experiment.

Catalase can also catalyze the oxidation, by hydrogen peroxide, of various metabolites and toxins, including formaldehyde, formic acid, phenols, acetaldehyde and alcohols.

Catalase and superoxide dismutase ameliorate the damaging effects of hydrogen peroxide and superoxide by converting these compounds into oxygen and water, benign molecules.

Catalase reactions vary among Enterobacteriaceae.

Catalase contributes to ethanol metabolism in the body after ingestion of alcohol, but it only breaks down a small fraction of the alcohol in the body.

Catalase has been shown to interact with the ABL2 and Abl genes.

In the first instance, `` mimesis '' is here used to mean the recalling of experience in terms of vivid images rather than in terms of abstract ideas or conventional designations.

A dominant motive is the poet's longing for his homeland and its boyhood associations: `` Not men-folk, but the fields where I would stray, The stones where as a child I used to play ''.

So in these pages the term `` technology '' is used to include any and all means which could amplify, project, or augment man's control over himself and over other men.

But what a super-Herculean task it is to winnow anything of value from the mud-beplastered arguments used so freely, particularly since such common use is made of cliches and stereotypes, in themselves declarations of intellectual bankruptcy.

This text from Dr. Huxley is sometimes used by enthusiasts to indicate that they have the permission of the scientists to press the case for a wonderful unfoldment of psychic powers in human beings.

The men who speculate on these institutions have, for the most part, come to at least one common conclusion: that many of the great enterprises and associations around which our democracy is formed are in themselves autocratic in nature, and possessed of power which can be used to frustrate the citizen who is trying to assert his individuality in the modern world ''.

Properly used, the present book is an excellent instrument of enlightenment.

This prospect did not please Mrs. King any more than did the possibility that her daughter might marry a Bohemian, but she used it to suggest to Thompson that, `` It is not in her nature to love you ''.

On the other hand, the consensus of opinion is that, used with caution and in conjunction with other types of evidence, the native sources still provide a valid rough outline for the English settlement of southern Britain.

The trouble with this machinery is that it is not used and the reason that it is not used is the absence of a conscious sense of community among the free nations.

In addition to his experiments in reading poetry to jazz, Patchen is beginning to use the figure of the modern jazz musician as a myth hero in the same way he used the figure of the private detective a decade ago.

When different colors are used, she is just as likely to color trees purple, hair green, etc..

Berlin is merely being used by Moscow as a stalking horse.

The collection of information is meaningless unless it is understood and used for a definite purpose.

This is used as a reference for comparing the ohmic heating and the electrical energy obtained from the measured current through the element and the measured voltage across the element.

There is little doubt if they had a secret ballot, they would vote for food for their family, in place of ideological purity out on the farm.

and, though he repeated, over and over again, the spectacular figures of industrial and agricultural production in 1980, the `` ordinary '' people in Russia are still a little uncertain as to how `` communism '' is really going to work in practice, especially in respect of food.

At that time consideration will be given to whether in the light of the United States supplies of rice available for Title 1, disposal, India's production, consumption and stocks of food grains, other imports from the United States and countries friendly to the United States, India's storage capacity, and other related factors, any increase would be possible in the portion of the total rice programmed which is currently planned for procurement during the first year.

Because agricultural activities are seasonal and the areas of production and harvest of many foods are widely scattered geographically, and because of the high cost of transporting bulk food items any substantial distance to a central processing location, the use of large central processing stations, where low-cost radiation facilities approaching the megawatt range might be utilized, is inherently impracticable.

For them, providing appetizing food under battle or emergency conditions is a paramount consideration.

The present status of food preservation by ionizing radiation is discussed by food classes in the following paragraphs.

`` The food is wonderful and it is a lot of fun to be here ''!!

Because the food is selected with thought for its nutritional value, care for its origin, and prepared in a manner that retains the most nutrients, the food does taste good.

The school finds that the children are satisfied with smaller amounts of food since all of it is high in quality.

The soybean seed is the most important leguminous food in the world.

In western Europe and North America, where the level of economic development is higher, grains and other seed products furnish less than one-third of the food consumed.

The rest is used for human food and industrial products.

The demand for food is so great in the world that little arable land can be given over to growing the nonfood crops.

The Louisiana city is known, of course, for its fine food, good music and its colorful hospitality `` and, when guests arrive at Philmont that night '', says Mrs. Grinsfelder, `` that is exactly what we expect to offer them.

As for food, Mrs. Henry Louchheim, chairman of this phase, is a globetrotter who knows good food.

Stickney is a salesman for Plee-Zing, Inc., 2544 Green Bay Rd., Evanston, a food brokerage and grocery chain firm, of which his father, William L. Jr., is president.

So you can see that Gerald G. Ramsey, director of SMU's food services, is not the ordinary type of craven, women-trodden chef.

To state fully what the Bible means as my daily spiritual food is as intimate and difficult as to formulate the reasons for loving my nearest and dearest relatives and friends.

The Bible is as obviously and truly food for the spirit as bread is food for the body.