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| | Free Essay Investigation On The Enzyme Trypsin |
 | | I wondered what would happen to the rate of reaction if I changed the incubation time of the trypsin, and for example heated the trypsin in the appropriate water bath for 1 minute before introducing the gelatin. | | | I would do this to reduce the amount of time that the gelatin spent outside the trypsin, and I would ignore the result of the other experiment. | | | This shows no clear trend, so I therefore decided to further investigate what effect changing the incubation might have on the rate of reaction. |
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http://www.echeat.com/essay.php?t=28016
(2877 words)
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| | Mutant Rat Trypsin |
| | Finally, this mutant trypsin will be useful in understanding and treating human hereditary pancreatitis. | | | In this investigation, we will be studying rat (Rattus rattus) trypsin and a mutant form of rat trypsin, in which two autolytic sites have been removed. | | | This double mutant trypsin may prove useful in experiments in which autolysis of wild-type trypsin has caused problems. |
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http://biology.kenyon.edu/courses/biol63/chime2002/trypsin/FRAMES/captxt.htm
(875 words)
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| | Worthington Trypsin |
| | Characterization of Anionic Human Trypsin, Biochem 12, 2847, 1973 | | | Comparative Reactivities of Human Skin Tryptase, Human Lung Tryptase, and Bovine Trypsin with Peptide 4-nitroanilide and Thioester Substrates, J Biol Chem 258, 13552, 1983 | | | A Thermodynamic Study, Biophys Chem 37, 355, 1990 |
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http://www.worthington-biochem.com/TRY
(5948 words)
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| | Trypsin - Wikipedia, the free encyclopedia |
| | This is important because, in some applications, like mass spectrometry, the specificity of cleavage is important. | | | Trypsins can be used to breakdown casein in milk. | | | Trypsins are produced in the pancreas in the form of inactive trypsinogens, and are then transported to the small intestine, where after trypsin autocatalytic activation of trypsinogen to trypsin they begin the digestion of proteins to polypeptides. |
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http://en.wikipedia.org/wiki/Trypsin
(354 words)
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| | Princeton Separations Products Endopeptidase Modified Trypsin Porcine |
| | Princeton Separations sequencing grade trypsin, TPCK treated, is subjected to extensive purification to remove contaminating proteases and tryptic autolysis by-products which could affect the specificity of the digestion process. | | | Trypsin is a serine endopeptidase which specifically cleaves peptide bonds on the carboxy side of arginine, lysine and s-aminoethyl cysteine residues. | | | The activity against casein is routinely compared with that of Trypsin and a Trypsin Activity Equivalence is calculated. |
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http://www.prinsep.com/html/products/endopeptidases/trypsin
(397 words)
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| | Tumor-associated Trypsin Inhibitor -- Stenman 48 (8): 1206 -- Clinical Chemistry |
| | Pancreatic secretory trypsin inhibitor-like immunoreactivity in pancreatectomized patients. | | | Tumour-associated trypsin inhibitor, TATI, in patients with pancreatic cancer, pancreatitis and benign biliary diseases. | | | Purification and characterization of a tumor-associated trypsin inhibitor from the urine of a patient with ovarian cancer. |
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http://www.clinchem.org/cgi/content/full/48/8/1206
(2709 words)
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| | [No title] |
| | To overcome these problems, Stratagene’s MS-Grade Trypsin is modified to achieve maximum specificity. | | | Finally, the modified, treated trypsin is affinity purified and lyophilized. | | | Native trypsin can digest itself (autolysis), generating proteolytic peptides that can interfere with analysis of the protein of interest. |
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http://www.stratagene.com/products/displayProduct.aspx?pid=619
(137 words)
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| | Epitope Retrieval Protocol - Trypsin Method |
| | Hydrate in 2 changes of 100% ethanol for 3 minutes each, 95% and 80% ethanol for 1 minute each. | | | Cover sections with trypsin working solution and incubate for 10-20 minutes at 37 °C in humidified chamber (optimal incubation time may vary depending on tissue type and degree of fixation, and should be determined by user). | | | Description: Formalin or other aldehyde fixation forms protein cross-links that mask the antigenic sites in tissue specimens, thereby giving weak or false negative staining for immunohistochemical detection of certain proteins. |
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http://www.ihcworld.com/_protocols/epitope_retrieval/trypsin.htm
(304 words)
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| | Modified Trypsin (TPCK-treated), Proteome Analysis, New England Biolabs |
| | Modified Trypsin (TPCK-treated), Proteome Analysis, New England Biolabs | | | Modified Trypsin is treated with L-(tosylamido-2-phenyl) ethyl chloromethyl ketone (TPCK) to inactivate any remaining chymotryptic activity. | | | Modified Trypsin cleaves at Lys-Pro and Arg-Pro bonds at a much slower rate than other amino acid residues (2). |
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http://www.neb.com/nebecomm/products/productP8101.asp
(467 words)
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| | Worthington Trypsin |
| | Trypsin is inhibited by organophosphorus compounds such as diisopropylfluorophosphate and natural inhibitors from pancreas. | | | While most trypsin activity is expressed in terms of esterase activity (TAME, BAEE, etc.), Worthington SeqENZ Grade modified trypsin's activity is expressed in its more functional proteolytic activity. | | | Uses: For tissue culture work, Worthington trypsin, Codes: TRL, TRLS, TRLVMF and TRTVMF have been used by many researchers. |
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http://www.worthington-biochem.com/TRY/cat.html
(654 words)
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| | TPCK Trypsin and Immobilized TPCK Trypsin |
| | Trypsin is treated with L-1-tosylamido-2-phenylethyl chloromethyl ketone (TPCK) to inhibit contaminating chymotrypsin activity without affecting trypsin activity. | | | Once some trypsin has been formed it can catalyze the conversion of more trypsinogen into its catalytically-active form. | | | Trypsin has a wide range of applications including amino acid analysis and protein sequencing, mapping and structural studies. |
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http://www.piercenet.com/Products/Browse.cfm?fldID=02040710
(356 words)
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| | trypsin on Encyclopedia.com |
| | Trypsin continues the process of digestion (begun in the stomach) in the small intestine where a slightly alkaline environment (about p H 8) promotes its maximal enzymatic activity. | | | Trypsin is one of the three principal digestive proteinases, the other two being pepsin and chymotrypsin. | | | Signet Laboratories Announces License Agreement with Bayer Diagnostics for Urinary Trypsin Inhibitor Immunoassays to Further Research Inflammatory Disease. |
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http://www.encyclopedia.com/html/t1/trypsin.asp
(577 words)
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| | Trypsin: The Test Sample |
| | Trypsin and chymotrypsin will be detectable in the small intestine and in the stool if the pancreas is functioning normally. | | | In the small intestine, trypsinogen is activated, turned into trypsin, by an enzyme in the intestinal mucosa and then trypsin in turn activates chymotrypsinogen to chymotrypsin. | | | Normally, their precursors (their inactive forms: trypsinogen and chymotrypsinogen) are produced in the pancreas and transported to the small intestine. |
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http://www.labtestsonline.org/understanding/analytes/trypsin/sample.html
(327 words)
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| | Millipore - Technical Library - Promega Trypsin Stability |
| | The results show similar trypsin performance in liquid and in-gel digest experiments before and after the storage. | | | Three lots of Promega trypsin were evaluated during this stability study to examine the effect of long term storage. | | | The assessment of each lot of trypsin for the acceptable activity change was performed by evaluating enzyme activity in two applications: |
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http://www.millipore.com/publications.nsf/docs/tn237
(542 words)
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| | Trypsin, Proteomics Grade |
| | Trypsin displays only minimal autolytic activity and no chymotryptic activity, which simplifies resulting peptide analysis. | | | The enzyme has been exhaustively processed by reductive methylation to minimize autolysis and chymotryptic activity quenched by TPCK (N-Tosyl-L-phenylalanine chloromethyl ketone) treatment. | | | Further purification steps including affinity chromatography and lyophilization from dilute acid produce a highly-purified, high specific activity trypsin purposely suited for the demanding criteria of proteomics research, and is designed to function for either in-solution or in-gel digests. |
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http://www.sigmaaldrich.com/Area_of_Interest/Life_Science/Proteomics_and_Protein_Expr_/Protein_Analysis/Mass_Spectrometry/Trypsin__Proteomics_Grade.html
(561 words)
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| | Trypsin - definition of Trypsin in Encyclopedia |
| | Trypsin is often modified by TCPK, Tosyl Phenylalanyl Chloromethyl Ketone, which will inactivate chymotrypsin. | | | Trypsin is a digestive enzyme that cleaves peptide bonds only at carboxyl side of lysine and arginine residiues. | | | Aspartate (Asp 189) residue located in the catalytic pocket (S1) of trypsin is reponsible for attracting and stabilizing positively-charged lysine and/or arginine. |
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http://encyclopedia.laborlawtalk.com/Trypsin
(119 words)
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| | Assay Procedure Trypsin Inhibitor |
| | Based on that of Laskowski which measures residual trypsin activity in a solution of known activity after addition of inhibitor. | | | One BAEE trypsin unit is that amount of enzyme causing an absorbance increase at 253nm of 0.001 per minute at 25 | | | Repeat with different dilution of inhibitor until about 50% inhibition is achieved. |
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http://www.faizyme.com/assatryi.htm
(363 words)
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| | Trypsin - Supplements |
| | The term “proteolytic” is a catch-all term referring to enzymes that digest protein. | | | In the body, proteolytic digestive enzymes are produced in the pancreas, but supplemental forms of enzymes may come from fungal or bacterial sources, extraction from the pancreas o livestock animals (trypsin/chymotrypsin) or extraction from plants (such as Papain from the papaya and Bromelain from pineapples). | | | Supplemental forms can incorporate any of a wide variety of enzymes including Trypsin, Chymotrypsin, Pancreatin, Bromelain, Papain, and a range of fungal proteases. |
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http://www.supplementwatch.com/supatoz/supplement.asp?supplementId=351
(1368 words)
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| | Pfam 19.0 : Trypsin |
| | The Three Dimensional Structure of Asnl02 Trypsin: Role of Aspl02 in Serine Protease Catalysis | | | The serine protease activity is localized at the N-terminal domain, whereas the binding domain is in the C-terminal region. |
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http://pfam.wustl.edu/cgi-bin/getdesc?acc=PF00089
(489 words)
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| | The Effect Of Temperature On Trypsin Enzymes |
| | These patterns and results show that the predictions that I made in my hypothesis are correct. | | | Below is a short sample of the essay "The Effect Of Temperature On Trypsin Enzymes". | | | I can also see that the time taken to hydrolyse milk protein was highest at 10ºc in all three tests and that in all three tests at 90ºc the trypsin failed to hydrolyse the milk protein atall. |
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http://www.coursework.info/i/8902.html
(395 words)
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| | Frequently Asked Questions - FOOD INGREDIENTS -- The Vegetarian Resource Group |
| | Those used in cheese-making are often animal- derived, others are used in breadmaking and are often fungal. | | | Some processed kinds found in the supermarket do, but fresh guacamole usually does not contain it. | | | Examples of enzymes are: lactase (fungal), lipase (animal, fungal), papain (vegetable), pectinase (fruit), protease (animal, vegetable, bacterial, or fungal), rennet (animal), and trypsin (animal). |
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http://www.vrg.org/nutshell/faqingredients.htm
(3032 words)
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| | Holistic Health Encyclopedia - P |
| | One, the acini cells, secrete digestive enzymes such as trypsin and chymotrypsin (for digesting proteins), amylase (for digesting carbohydrates), and lipase (for digesting fats), as well as secreting water and bicarbonate ions to make the pancreatic juices alkaline for food digestion in the small intestine. | | | Common symptoms of a lack of these enzymes include gas and lower bowel discomfort, foul smelling stools, and duodenal ulcers. | | | The pancreas is typically a 6-inch long, 3-ounce gland situated transversely about 1-2 inches above the bottom of the front rib cage and behind the stomach, touching the left kidney, left adrenal and spleen. |
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http://www.myholistic.com/glossary/P.php3
(9218 words)
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| | Trypsin |
| | DFP, TLCK, PMSF, APMSF, leupeptin, aprotinin, Soybean trypsin Inhibitor |
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http://delphi.phys.univ-tours.fr/Prolysis/trypsin.html
(26 words)
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