NounSingular enzyme Plural enzymes enzyme (plural enzymes)
From Wiktionary under the GNU Free Documentation License. Enzymes are proteins that catalyze (i.e., increase the rates of) chemical reactions. In enzymatic reactions, the molecules at the beginning of the process are called substrates, and the enzyme converts them into different molecules, called the products. Almost all processes in a biological cell need enzymes to occur at significant rates. Since enzymes are 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) 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. A few RNA molecules called ribozymes also catalyze reactions, with an important example being some parts of the ribosome. Synthetic molecules called artificial enzymes also display enzyme-like catalysis. 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). From Wikipedia under the
GNU Free Documentation License How do our bodies produce the enzyme alcohol dehydrogenase? Q. Are certain amino acids a precursor to this enzyme? If not, please explain to me to the best of your ability how our bodies produce/synthesize alc dehydrogenase. Is it possible to adjust one's diet to ensure the liver is producing enzymes to the best of its ability? Asked by Michael Abernathy - Fri Dec 7 10:50:20 2007 - - 1 Answers - 0 Comments A. You may think of it as a process of protein synthesis. There are genes coding for different isozymes of alcohol dehydrogenase, what u need is: Transcription Translation Post-translational modification And yes, amino acids are precursors for protein synthesis. Or do you want to know about the exact locations of the genes, the conformation, or wtever :) ? Hope i've helped. Good luck~ Answered by KDFC - Fri Dec 7 11:13:35 2007 What are other ways at which an enzyme catalasis can be denatured? Q. i know that pH levels and temperature play important roles but isnt there other ways an enzyme can be denatured, besides pH and temp. changes? Asked by Casy F - Tue Sep 9 02:34:28 2008 - - 2 Answers - 0 Comments A. As well as urea - excess salts can mask charged side-chains on proteins and cause the protein to denature. For proteins with disulphide bridges, then reducing conditions can convert the -S-S- back to a -S-H H-S- Guanidium hydrochloride also does the same thing as urea. Answered by gribbling - Tue Sep 9 08:06:42 2008 What restriction enzyme would determine insertion of a gene?
Q. What factors would help determine the insertion of a gene into a vector? I'm trying to find which enzyme is better for inserting a recA gene into a pBC KS+ vector? ClaI or EcorI? Asked by jadestylz - Mon Nov 26 14:33:27 2007 - - 1 Answers - 0 Comments A. 1) If recA has an internal site for either of these restriction enzymes, you wouldn't want to use that one. 2) Same thing for the vector itself, except that you *do* want the vector to have one or two sites for either Cla I or EcoRI (so you can get the recA gene in). Answered by Mark S, JPAA - Mon Nov 26 15:08:55 2007 From Yahoo Answer Search: "enzyme"  news.google.com 7thSpace Interactive (press release) By CMAH directed RT-PCR and NeuGc detection with the specific anti-NeuGc-GM3 antibody 14F7 we evaluated enzyme and ganglioside expression in tumor cells, ... news.google.com welt online ... by an enzyme cleavable linker to a potent, synthetic drug payload, monomethyl auristatin E (MMAE), using Seattle Genetics' proprietary technology. ... Seattle Genetics to Present Brentuximab Vedotin and Dacetuzumab Data at the ... dBusinessNews New Orleans (press release) all 7 news articles » news.google.com 7thSpace Interactive (press release) The polymerases differed significantly with respect to their association with PHA granules, enzyme kinetics and substrate specificity. ... From Google News Search: "enzyme"  healthproductsusa.net 200px x 108px | 63.30kB [source page] of losing weight However a diet with an abundance of protein and fat can be difficult to digest ReNew Life s Low Carb ENZYME is a high potency formula that specifically targets the digestion of those types of foods Low Carb ENZYME contains high quantities of the enzyme protease which digests proteins and lipase which digests fats This combination is  benuts.com 250px x 250px | 12.40kB [source page] Enzyme Max Get rid of debris that can slow down your healing response time From Yahoo Image Search: "enzyme"  blog.taragana.com Ani Fri, 20 Nov 2009 08:45:44 GM The . enzyme. triggers a clear physical change in breast tissue and, if we could stop this happening, we expect it would slow the growth of any cancers that did develop and make them easier to eradicate, BBC News quoted lead researcher ...  rss.altuse.com Mike Sun, 29 Nov 2009 15:41:00 GM Use old Fruits to create Garbage . Enzyme. · Vegetable & Fruit Leftovers Unwanted vegetable or fruit products due to spoilage, etc. Posted by Mike at 7:41 AM. 0 comments: Post a Comment. Newer Post Older Post Home ...  micronutra.com MicroNutra Health Sat, 05 Dec 2009 02:54:37 GM Most people don't know that several uncomfortable things can actually be signs of an . enzyme. deficiency. Gas, bloating, acid reflux, diarrhea, constipation, cramping, and yes, even heartburn can be your body's way of telling you that ... From Google Blog Search: "enzyme" |
