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Topic: Trypsin

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Serine protease

Sulfur bridges

Chymotrypsin

Pepsin

Enzyme

Pancreas

Protease

Plasmin

Giemsa

Gastrointestinal tract

Coagulation

Cytogenetics

Gelatin

Tissue plasminogen activator

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	trypsin - Encyclopedia.com
		Trypsin is one of the three principal digestive proteinases, the other two being pepsin and chymotrypsin.
		Trypsin, produced in an inactive form by the pancreas, is remarkably similar in chemical composition and in structure to the other chief pancreatic proteinase, chymotrypsin.
		In vitro degradation of a polyether urethane by trypsin
	www.encyclopedia.com /doc/1E1-trypsin.html (1377 words)

	Trypsin
		The pH optimum for trypsin activity is pH 7-9, and it is permanently inactivated at pH > 11.
		Trypsin retains activity in 0.1% SDS, 1 M guanidine[?] HCl, and 30% ethanol.
		Together with pepsin and chymotrypsin, trypsin is one of the three principal digestive proteinases.
	www.ebroadcast.com.au /lookup/encyclopedia/tr/Trypsin.html (100 words)

	Spartanburg SC \| GoUpstate.com \| Spartanburg Herald-Journal (Site not responding. Last check: )
		Trypsins have an optimal operating pH of about 8 and optimal operating temperature of about 37Â°C. The aspartate residue (Asp 189) located in the catalytic pocket (S1) of trypsins is responsible for attracting and stabilizing positively-charged lysine and/or arginine, and is thus responsible for the specificity of the enzyme.
		Trypsins are considered endopeptidases, i.e., the cleavage occurs within the polypeptide chain rather than at the terminal amino acids located at the ends of polypeptides.
		Trypsin is produced in the pancreas in the form of inactive zymogen, trypsinogen.
	www.goupstate.com /apps/pbcs.dll/section?category=NEWS&template=wiki&text=trypsin (620 words)

	Reference.com/Encyclopedia/Trypsin
		Trypsins have an optimal operating pH of about 8 and optimal operating temperature of about 37°C. The aspartate residue (Asp 189) located in the catalytic pocket (S1) of trypsins is responsible for attracting and stabilizing positively-charged lysine and/or arginine, and is thus responsible for the specificity of the enzyme.
		Trypsins are considered endopeptidases, i.e., the cleavage occurs within the polypeptide chain rather than at the terminal amino acids located at the ends of polypeptides.
		In a tissue culture lab, trypsins are used to re-suspend cells adherent to the cell culture dish wall during the process of harvesting cells.
	www.reference.com /browse/wiki/Trypsin (679 words)

	AllRefer.com - trypsin (Biochemistry) - Encyclopedia
		trypsin, enzyme that acts to degrade protein; it is often referred to as a proteolytic enzyme, or proteinase.
		Trypsin is one of the three principal digestive proteinases, the other two being pepsin and chymotrypsin.
		Trypsin, produced in an inactive form by the pancreas, is remarkably similar in chemical composition and in structure to the other chief pancreatic proteinase, chymotrypsin.
	reference.allrefer.com /encyclopedia/T/trypsin.html (338 words)

	Millipore - Promega Trypsin Stability
		The effect of Trypsin storage and shipping temperature was evaluated to assure that the enzyme retains sufficient activity for use, even when temperatures exceed 4
		Three lots of Promega trypsin were evaluated during this stability study to examine the effect of long term storage.
		Promega trypsin performance in a real time stability study after storage at –20°, 4° and 25 ºC for 5 days.
	www.millipore.com /publications.nsf/docs/tn237 (526 words)

	MedlinePlus Medical Encyclopedia: Trypsin and chymotrypsin in stool
		Trypsin and chymotrypsin are substances released from the pancreas during normal digestion.
		If trypsin or chymotrypsin are present, the gelatin will be digested, which will produce a clearing of the gelatin.
		A normal result is normal concentration of trypsin or chymotrypsin in the stool.
	www.nlm.nih.gov /medlineplus/ency/article/003594.htm (492 words)

	Trypsin - Definition, explanation
		Trypsin is a digestive enzyme that cleaves peptide bonds (a serine protease).
		Trypsin is produced in the pancreas in the form of trypsinogen, and is then transported to the small intestine, where begins the digestion of proteins to polypeptides and amino acids.
		In a tissue culture lab, trypsin is used to re-suspend cells adherent to the petri dish wall during the process of harvesting cells.
	www.calsky.com /lexikon/en/txt/t/tr/trypsin.php (216 words)

	Mutant Rat Trypsin
		Trypsin cleaves a terminal hexapeptide from trypsinogen to yield a single-chain [beta]-trypsin.
		Trypsin is a globular protein of 24 kDa, composed of 220 residues.
		The enzymatic activity of trypsin is highly specific towards the positive side-chains of residues lysine (Lys) and arginine (Arg), cleaving a peptide at the carboxyl side of these residues, during a hydrolytic reaction.
	biology.kenyon.edu /courses/biol63/chime2002/trypsin/FRAMES/captxt.htm (875 words)

	TPCK Trypsin and Immobilized TPCK Trypsin
		Trypsin is a 23.8 kDa pancreatic serine endoprotease derived from trypsinogen, an inactive precursor zymogen, after enzymatic removal of an n-terminal leader sequence by enterokinase.
		Trypsin cleaves only those peptide bonds in which the carboxyl group is contributed by a lysine or an arginine residue, regardless of the length or amino acid sequence of the chain.
		Immobilized trypsin can be substituted for free trypsin in any application, and is advantageous because it virtually eliminates autolysis, eliminates contamination of a sample with the protease and allows control of the digestion by removing the trypsin.
	www.piercenet.com /Products/Browse.cfm?fldID=02040710 (356 words)

	Trypsin and chymotrypsin in stool
		If trypsin or chymotrypsin are present, the gelatin will be digested, which will produce a clearing of the gelatin.
		Trypsin and chymotrypsin are proteolytic enzymes released from the pancreas during normal digestion.
		When the pancreas does not produce sufficient, normal amounts of trypsin and chymotrypsin, smaller-than-normal amounts of these enzymes are detected in the stool.
	www.healthtalk.com /lymphoma/encyclopedia/?p=1/003594.htm (448 words)

	Genotech - MSG-Trypsin™
		Trypsin is a widely used protease enzyme for protein sequence analysis.
		Trypsin undergoes autolysis, producing trypsin fragments that interfere with sequence analysis.
		Genotech has developed a chemically modified trypsin that is enzymatically active and yet resistant to autolysis.
	www.gbiosciences.com /MSGTrypsin-desc.aspx (179 words)

	Trypsinizing cells (Site not responding. Last check: )
		Cells that are extremely hard to dislodge with trypsin should be rinsed with VE prior to trypsinization and then trypsinized in the presence of VE.
		It is essential to inactivate trypsin and to remove EDTA after you have gotten the cells off the dish.
		Trypsin inhibition is accomplished in part by trypsin inhibitors in the serum in the growth medium.
	pingu.salk.edu /~sefton/Hyper_protocols/trypsin.html (363 words)

	Worthington Trypsin
		Trypsin is a pancreatic serine protease with substrate specificity based upon positively charged lysine and arginine side chains.
		Trypsin is inhibited by organophosphorus compounds such as diisopropylfluorophosphate and natural inhibitors from pancreas.
		Chromatographically purified trypsin treated with L-(tosylamido-2-phenyl) ethyl chloromethyl ketone (TPCK) to inhibit contaminating chymotryptic activity according to Kostka, V., and Carpenter, F.H.: JBC, 239, 1799 (1964), Code: TRTPCK, lyophilized, irradiated and tested for the absence of mycoplasma and extraneous virus according to 9 CFR 113.53c.
	www.worthington-biochem.com /TRY/cat.html (654 words)

	Purification and characterization of two trypsin inhibitors from the hemolymph of Manduca sexta larvae -- Ramesh et al. ...
		Purification and characterization of two trypsin inhibitors from the hemolymph of Manduca sexta larvae -- Ramesh et al.
		Purification and characterization of two trypsin inhibitors from the hemolymph of Manduca sexta larvae
		Trypsin inhibitory activity from the hemolymph of the tobacco hornworm
	www.jbc.org /cgi/content/abstract/263/23/11523 (328 words)

	trypsin — Infoplease.com
		Trypsin is one of the three principal digestive proteinases, the other two being
		Trypsin continues the process of digestion (begun in the stomach) in the small intestine where a slightly alkaline environment (about
		Association of the Brazil nut protein gene and kunitz trypsin inhibitor alleles with soybean protease inhibitor activity and agronomic......
	www.infoplease.com /ce6/sci/A0849555.html (408 words)

	Princeton Separations Products Endopeptidase Modified Trypsin Porcine (Site not responding. Last check: )
		Trypsin is a serine endopeptidase which specifically cleaves peptide bonds on the carboxy side of arginine, lysine and s-aminoethyl cysteine residues.
		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.
		The activity against casein is routinely compared with that of Trypsin and a Trypsin Activity Equivalence is calculated.
	www.prinsep.com /html/products/endopeptidases/trypsin (397 words)

	The Scientist : Trypsin protection
		The trypsin observed in the Paneth cells of the small intestine processes human defensin-5.
		They found that a specific pattern of trypsin isozymes is expressed in Paneth cells and that trypsin colocalizes with HD.
		"By acting as a prodefensin convertase, and perhaps through signaling effects, trypsin released from Paneth cells after microbial or inflammatory stimuli may be central to the activation of innate immune responses in the human small intestine," conclude the authors.
	www.the-scientist.com /article/display/20397 (199 words)

	ARS \| Publication request: Cdna Cloning of a Putative Peanut Trypsin Inhibitor with Homology to Peanut Allergens Ara H ... (Site not responding. Last check: )
		In conclusion, putative peanut trypsin inhibitors have been isolated and reveal high similiarity at the nucleotide and amino acid level to peanut allergen Ara h 3 and Ara h 4.
		Peanut trypsin inhibitors are pathogenesis-related (PR) proteins and they play an important role in the plant defense mechanism against insects.
		Conclusion: In this study, a putative peanut trypsin inhibitor has been isolated and reveals high homology at the nucleotide and amino acid level to peanut allergen Ara h 3 and Ara h 4.
	www.ars.usda.gov /research/publications/publications.htm?seq_no_115=142500 (501 words)

	[No title]
		EDTA has the same effect as trypsin, i mean we can detach cells using EDTA alone and its much gentler on cells than trypsin, so i think its added to trypsin to enhance its effect and i read also that it can decrease the clumbing of cells.
		Trypsin cuts the adhesion proteins in cell-cell and cell-matrix interactions (i don't remember the specific site), and EDTA is a calcium chelator, which integrins needs to interact with other proteins for cell adhesion-- no calcium, no cell adhesion.
		The reason why we use PBS without Ca2+/Mg2+ to wash the cells prior to trypsinisation is to reduce the concentration of Divalent cations and proteins that inhibit trypsin action.
	www.protocol-online.org /forums/index.php?showtopic=21462&view=getnewpost (1488 words)

	Avian Influenza (Site not responding. Last check: )
		The pathogenicity of AI viruses is correlated to the ability of trypsin to cleave the haemagglutinin molecule into two subunits.
		Trypsin sensitivity and amino acid sequencing can be used diagnostically to determine whether or not an isolated virus is potentially pathogenic.
		In vitro tests, based on the ability of the virus to produce plaques in cell cultures in the absence of trypsin, are also useful for pathotyping strains of the virus.
	www.fao.org /ag/againfo/subjects/en/health/diseases-cards/avian.html (1880 words)

	Trypsin, Proteomics Grade
		Proteomics Grade Trypsin has been extensively purified from porcine pancreas to enable accurate and precise cleavage on the carboxylic acid side of Arg and Lys residues.
		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.
		Because the Trypsin IGD Kit contains Proteomics Grade Trypsin, a higher sequence coverage and fewer ambiguous autolytic peaks are observed in MALDI spectra.
	www.sigmaaldrich.com /Area_of_Interest/Life_Science/Proteomics_and_Protein_Expr_/Protein_Analysis/Mass_Spectrometry/Trypsin__Proteomics_Grade.html (561 words)

	EPA: Trypsin Modulating Oostatic Factor (TMOF) (105403) Fact Sheet
		Trypsin Modulating Oostatic Factor (TMOF) is used against mosquito larvae in aquatic environments.
		The active ingredient, Trypsin Modulating Oostatic Factor (TMOF), is a small protein containing 10 amino acids.
		Also, the TMOF protein is broken down quickly in the human gut and doesn't have the opportunity to inhibit trypsin synthesis.
	www.epa.gov /pesticides/biopesticides/ingredients/factsheets/factsheet_105403.htm (479 words)

	Worthington Trypsin
		Trypsin is a pancreatic serine protease with substrate specificity based upon positively charged lysine and arginine side chains (Brown and Wold 1973).
		The Inhibition of Chymotrypsin and Trypsin, Biochem Pharmacol 15, 1361, 1966
		The Reaction of Phenol Side-Chains in Bovine and Porcine Trypsinogens and Trypsins, Eur J Biochem 12, 250, 1970
	www.worthington-biochem.com /TRY/default.html (5942 words)

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