Definition of enzyme Enzyme
/ɛˈnzajˌm/ - [enzaym] - en•zyme
We found 6 definitions of enzyme from 6 different sources.
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What does enzyme mean?
WordNet
NounPlural: enzymes |
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| enzyme - any of several complex proteins that are produced by cells and act as catalysts in specific biochemical reactions | ||
| protein any of a large group of nitrogenous organic compounds that are essential constituents of living cells; consist of polymers of amino acids; essential in the diet of animals for growth and for repair of tissues; can be obtained from meat and eggs and milk and legumes; "a diet high in protein" | ||
| catalyst, accelerator something that causes an important event to happen; "the invasion acted as a catalyst to unite the country" | ||
| active site the part of an enzyme or antibody where the chemical reaction occurs | ||
| ada, adenosine deaminase an enzyme found in mammals that can catalyze the deamination of adenosine into inosine and ammonia; "ADA deficiency can lead to one form of severe combined immunodeficiency disease"; "the gene encoding ADA was one of the earlier human genes to be isolated and cloned for study" | ||
| amylase any of a group of proteins found in saliva and pancreatic juice and parts of plants; help convert starch to sugar | ||
| cholinesterase an enzyme that hydrolyses acetylcholine (into choline and acetic acid) | ||
| coagulase an enzyme that induces coagulation | ||
| collagenase any enzyme that catalyzes the hydrolysis of collagen and gelatin | ||
| complement something added to complete or embellish or make perfect; "a fine wine is a perfect complement to the dinner"; "wild rice was served as an accompaniment to the main dish" | ||
| catalase enzyme found in most plant and animal cells that functions as an oxidative catalyst; decomposes hydrogen peroxide into oxygen and water | ||
| cyclooxygenase, cox either of two related enzymes that control the production of prostaglandins and are blocked by aspirin | ||
| decarboxylase any of the enzymes that hydrolize the carboxyl group | ||
| de-iodinase an enzyme that removes the iodine radical | ||
| disaccharidase an enzyme that catalyzes the hydrolysis of disaccharides into monosaccharides | ||
| elastase a pancreatic enzyme that catalyzes the hydrolysis of elastin | ||
| enterokinase enzyme in the intestinal juice that converts inactive trypsinogen into active trypsin | ||
| histaminase enzyme that acts as a catalyst in converting histidine to histamine | ||
| hyaluronidase, hyazyme, spreading factor an enzyme (trade name Hyazyme) that splits hyaluronic acid and so lowers its viscosity and increases the permeability of connective tissue and the absorption of fluids | ||
| isomerase an enzyme that catalyzes its substrate to an isomeric form | ||
| kinase an enzyme that catalyzes the conversion of a proenzyme to an active enzyme | ||
| lipase an enzyme secreted in the digestive tract that catalyzes the breakdown of fats into individual fatty acids that can be absorbed into the bloodstream | ||
| lysozyme, muramidase an enzyme found in saliva and sweat and tears that destroys the cell walls of certain bacteria | ||
| monoamine oxidase, mao an enzyme that catalyzes the oxidation of many body compounds (e.g., epinephrine and norepinephrine and serotonin) | ||
| nitrogenase an enzyme of nitrogen-fixing microorganisms that catalyzes the conversion of nitrogen to ammonia | ||
| nuclease general term for enzymes that catalyze the hydrolysis of nucleic acid by cleaving chains of nucleotides into smaller units | ||
| oxidase any of the enzymes that catalyze biological oxidation | ||
| oxidoreductase an enzyme that catalyzes oxidation-reduction | ||
| papain a proteolytic enzyme obtained from the unripe papaya; used as a meat tenderizer | ||
| beta-lactamase, penicillinase enzyme produced by certain bacteria that inactivates penicillin and results in resistance to that antibiotic | ||
| pepsin an enzyme produced in the stomach that splits proteins into peptones | ||
| pepsinogen precursor of pepsin; stored in the stomach walls and converted to pepsin by hydrochloric acid in the stomach | ||
| phosphatase any of a group of enzymes that act as a catalyst in the hydrolysis of organic phosphates | ||
| fibrinolysin, plasmin an enzyme that dissolves the fibrin of blood clots | ||
| polymerase an enzyme that catalyzes the formation of new DNA and RNA from an existing strand of DNA or RNA | ||
| peptidase, protease, proteinase, proteolytic enzyme any enzyme that catalyzes the splitting of proteins into smaller peptide fractions and amino acids by a process known as proteolysis | ||
| reductase an enzyme that catalyses the biochemical reduction of some specified substance | ||
| chymosin, rennin an enzyme that occurs in gastric juice; causes milk to coagulate | ||
| secretase a set of enzymes believed to snip pieces off a longer protein producing fragments of amyloid protein that bunch up and create amyloid protein plaques in brain tissue (the pathological hallmark of Alzheimer's) | ||
| streptodornase an enzyme produced by some hemolytic strains of streptococcus that dissolves fibrinous secretions from infections; used medicinally (often in combination with streptokinase) | ||
| streptokinase an enzyme produced by some strains of streptococcus that can liquefy blood clots by converting plasminogen to plasmin; used medicinally in some cases of myocardial infarction and pulmonary embolism | ||
| superoxide dismutase, sod an enzyme that catalyzes the conversion of superoxide into hydrogen peroxide and oxygen; "oxygen free radicals are normally removed in our bodies by the superoxide dismutase enzymes" | ||
| telomerase an enzyme in eukaryotic cells that can add telomeres to the ends of chromosomes after they divide | ||
| transferase any of various enzymes that move a chemical group from one compound to another compound | ||
| trypsin an enzyme of pancreatic origin; catalyzes the hydrolysis of proteins to smaller polypeptide units | ||
| urease an enzyme that catalyzes the hydrolysis of urea into carbon dioxide and ammonia; is present in intestinal bacteria | ||
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Wiktionary 
- enzyme (Noun)
A globular protein that catalyses a biological chemical reaction .
Webster DictionaryWebster's Unabridged Dictionary 📘
- enzyme (n.)
An unorganized or unformed ferment, in distinction from an organized or living ferment; a soluble, or chemical, ferment. Ptyalin, pepsin, diastase, and rennet are good examples of enzymes.
OmegaWiki DictionaryOmegaWiki Dictionary Ω
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enzyme
Any of a group of catalytic proteins that are produced by living cells and that mediate and promote the chemical processes of life without themselves being altered or destroyed.
Wikipedia 
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Enzymes are special molecules that work as catalysts. This means that enzymes speed up chemical reactions in the body. Enzymes speed up chemical reactions by lowering the amount of energy needed for a reaction to work. The substances at the start of the reaction are called the substrates. The substances at the end of the reaction are called the products. Enzymes work on the substrates, which later become the products.
One example of an enzyme is amylase. Amylase is found in saliva. Amylase breaks down starch molecules into smaller maltose molecules. These molecules are later broken down into even smaller glucose molecules. Another example is that lypase enzymes break down fats into smaller molecules.
Another example is Protease, protease is used to break down protein and it breaks it down into even smaller molecules, called amino acids.
All enzymes work properly only at one particular temperature and pH. All of your digestive enzymes have a optimum temperature of around 37-40'C. But their optimum pH vary. Enzymes are like eggs (they are both proteins). When you cook an egg you can not change it back. When enzymes reach a certain temperature they become denatured which means they are permanently changed and do not work.
Part of speech
🔤- enzyme, noun, singular of enzymes.
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