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( Enzyme)
Enzymes are biomolecules that catalyze (i.e. increase the rates of) chemical reactions.[1][2] Almost all enzymes are proteins. In enzymatic reactions, the molecules at the beginning of the process are called substrates, and the enzyme converts them into different molecules, the products. Almost all processes in a biological cell need enzymes in order to occur at significant rates. Since enzymes are extremely selective for their substrates and speed up only a few reactions from among many possibilities, the set of enzymes made in a cell determines which metabolic pathways occur in that cell. Like all catalysts, enzymes work by lowering the activation energy (Ea or ?G‡) for a reaction, thus dramatically increasing the rate of the reaction. Most enzyme reaction rates are millions of times faster than those of comparable un-catalyzed reactions. As with all catalysts, enzymes are not consumed by the reactions they catalyze, nor do they alter the equilibrium of these reactions. However, enzymes do differ from most other catalysts by being much more specific. Enzymes are known to catalyze about 4,000 biochemical reactions.[3] A few RNA molecules called ribozymes catalyze reactions, with an important example being some parts of the ribosome.[4][5] Synthetic molecules called artificial enzymes also display enzyme-like catalysis.[6] Enzyme activity can be affected by other molecules. Inhibitors are molecules that decrease enzyme activity; activators are molecules that increase activity. Many drugs and poisons are enzyme inhibitors. Activity is also affected by temperature, chemical environment (e.g. pH), and the concentration of substrate. Some enzymes are used commercially, for example, in the synthesis of antibiotics. In addition, some household products use enzymes to speed up biochemical reactions (e.g., enzymes in biological washing powders break down protein or fat stains on clothes; enzymes in meat tenderizers break down proteins, making the meat easier to chew). As early as the late 1700s and early 1800s, the digestion of meat by stomach secretions[7] and the conversion of starch to sugars by plant extracts and saliva were known. However, the mechanism by which this occurred had not been identified.[8]
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Enzyme Subcategories
Enzyme Articles
Why It's Harder for Women to Lose Weight by Yuri Elkaim
It has been my experience that, in general, women are at a distinct disadvantage when compared to men when it comes to obesity and their ability to lose weight. There are a couple of reasons that can help explain this phenomenon. First, wo...
Why Eating Raw Foods Will Help You Lose Weight by Yuri Elkaim
The concept of eating natural raw foods in their living state makes sense to every species in the world except for humans. It’s also quite funny that we’re the only species that struggles with obesity and a contrasting weight obsessed culture.
Dietary Supplements Can Cause Liver Damage by Sandra Powers
Dietary Supplements Can Cause Liver Damage By Sandy Powers
Dietary supplements such as vitamins, minerals, and herbal products can cause liver damage. I learned this the hard way. ...
YOUR ENZYMES & YOUR WEIGHT by Robert Ross
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Healthier Vitamins by Benita Stephenson
Body Balance Body Balance is a powerful whole food, liquid supplement that combines our proprietary blend of nine sea vegetables and certified organically grown Aloe Vera.
Sea Vegetables Sea vegetables are one of th...
Anti Aging Digestion Enzymes Are Essential For Life by Jennifer Kays
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Jennifer Kays
http://www.sweetmeidicineessentials.com Anti Aging Digestion Enzymes Are Essential For Life
Digestive enzymes are the most essential nutritional
requirements that our bodies need to...
Coenzyme Q10 And Heart Health by Alexander Holt
The heart is the most important muscle in our body, it's our life pump. It is one of the few organs that are expected to work continuously, without rest, for a lifetime.
The heart beats about 70 times a minute, 100,000 times a day and about 3...
Stop Acid Reflux - Use the Dynamite Duo, Plus! by Charles Stewart Richey
Many people approach the cure for acid reflux like the quest for the Holy Grail. They get so bogged down with different opinions and methods that they become confused and give up. When they give up, they go back to those ghastly, but convenient drugs...
The Importance of Enzymes for Health by Mizpah Matus
Enzymes are involved in the function and regulation of every organ system in the body and as such they are absolutely essential for life.
Enzymes play a vital role in the digestive system to promote the breakdown of food to prepare it for ab...
An Overview of Enzyme Peels for Your Face by Ricardo Silva
When dealing with the refurbishing of facial skin, peels are a popular option. Here is an overview of enzyme peels for your facial skin care needs.
An Overview of Enzyme Peels for Your Face
The enzyme peel is not a new technique at a...
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