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Topic: Denatured protein


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In the News (Mon 1 Sep 14)

  
  Profect protein beverage - For Special Medical Needs and Healthy Lifestyles
Individuals susceptible to immunologic responses to ingested protein antigens may avoid a variety of protein sources including dairy, soy, eggs, fish and peanuts.
As part of an overall nutritional therapy, Profect is indicated to increase serum protein levels, balance metabolism and to aid in the body’s ability to rebuild lost tissues due to catabolism.
According to the Agency for Health Care Policy and Research (AHCPR), patients with pressure ulcers need 1.25 to 1.5 grams of protein per kilogram of body weight daily.Pressure ulcer patients may be unable to eat on their own, or unable to tolerate the organoleptic qualities of conventional food – especially those rich in protein.
www.protica.com /profect.htm   (1248 words)

  
  Protein - Wikipedia, the free encyclopedia
Proteins are essential to the structure and function of all living cells and viruses.
Nearly all the biological catalysts known as enzymes are soluble proteins (with a recent notable execption being the discovery of ribozymes, RNA molecules with the catalytic properties of enzymes.) Antibodies, the basis of the adaptive immune system, are another example of soluble proteins.
Protein is the major component in the regulation, growth and differentation of muscles, tendons, enzymes, skin, hair, eyes, as well as a tremendous variety of other organs and processes.
en.wikipedia.org /wiki/Protein   (2170 words)

  
 Learn more about Protein in the online encyclopedia.   (Site not responding. Last check: 2007-10-28)
Proteins (meaning "first thing"; discovered by Berzelius, in 1838) are one of the primary constituents of living things;as such, these are one of the primary biochemical molecules-classes.
One of the more striking discoveries of the 20th century was that the native and denatured states in many proteins were interconvertible, that by careful control of solution conditions (by for example, dialyzing away a denaturing chemical), a denatured protein could be converted to native form.
Protein deficiency is often discussed in relation to nutrition especially as it relates to starvation and malnourishment in third world countries.
www.onlineencyclopedia.org /p/pr/protein.html   (1135 words)

  
 Denatured protein - Wikipedia, the free encyclopedia
A protein can be denatured through various means including exposure to extremes of heat, pH, salt concentration, and use of detergents.
For example, chaperonins are able to denature proteins transiently in order to force them to refold into their correct native conformation.
During digestion, proteins are denatured by stomach acid allowing them to be degraded by proteolytic enzymes to their amino acid components.
en.wikipedia.org /wiki/Denatured_protein   (136 words)

  
 Encyclopedia: Protein   (Site not responding. Last check: 2007-10-28)
Integral membrane protein of the transmembrane type An Integral Membrane Protein (IMP) is a protein molecule (or assembly of proteins) that in most cases spans the biological membrane with which it is associated (especially the plasma membrane) or which, in any case, is sufficiently embedded in the membrane to remain...
In biochemistry, a receptor is a protein on the cell membrane or within the cytoplasm or cell nucleus that binds to a specific factor (a ligand), such as a neurotransmitter, hormone, or other substance, and initiates the cellular response to the ligand.
A membrane protein is a protein molecule (or assembly of molecules) that is either embedded in or weakly attached to a biological membrane, especially the plasma membrane.
www.nationmaster.com /encyclopedia/Protein   (6051 words)

  
 Protein Article, Protein Information   (Site not responding. Last check: 2007-10-28)
Protein is essential to the structure and function of allliving cells and viruses.Many proteins are enzymes or subunits of enzymes.
Proteins are a primary constituent of livingthings and one of the chief classes of molecules studied in biochemistry and were discovered by Jons Jacob Berzelius, in 1838.
Protein deficiency can lead to symptoms such as fatigue, insulin resistance, hair loss, loss of hair pigment (hair that should be fl becomes reddish), loss of muscle mass (proteins repair muscle tissue), low body temperature, and hormonalirregularities.
www.anoca.org /proteins/amino/protein.html   (1675 words)

  
 Contact Lens Spectrum
Denaturation is a chemical and physical transformation that causes a change in the configuration of the protein.
Protein deposits that are visible to the naked eye are most often a result of denaturation.
Up until recently, the primary method of dealing with protein deposits was to use a surface-active ingredient to adhere to the protein and to remove it from a lens or to use a calcium-sequestering agent to bind calcium and thereby remove a necessary protein-binding factor.
www.clspectrum.com /article.aspx?article=12807   (1568 words)

  
 Denatured protein -- Facts, Info, and Encyclopedia article   (Site not responding. Last check: 2007-10-28)
A denatured protein is one which has lost its functional conformation.
Protein denaturation may be a favorable process biologically.
For example, (additional info and facts about chaperonin) chaperonins are able to denature proteins transiently in order to force them to (additional info and facts about refold) refold into their correct native conformation.
www.absoluteastronomy.com /encyclopedia/d/de/denatured_protein.htm   (86 words)

  
 Microdevice substrate and method for making micropattern devices - Patent 4103064
Monolayer 3 is a layer of denatured protein which is one molecule thick, the protein being a globular protein having a maximum molecular dimension not greater than 500 Angstrom units and a ratio of greatest molecular dimension to smallest molecular dimension of at least 2:1.
The molecules of the denatured protein of the monolayer are further characterized by having a hydrophilic side and a hydrophobic side facing in generally opposite directions and separated by a distance which is small relative to the maximum dimension of the molecule.
At this point, it must be recognized that the protein of the monolayer is denatured as a result of the surface tension at the air-water interface and that each molecule of the protein of the monolayer is oriented with its hydrophilic side toward the water and its hydrophobic side toward the air.
www.freepatentsonline.com /4103064.html   (6149 words)

  
 Water-insoluble protein-based edible barrier coatings and films - Patent 5543164
A protein-based water-insoluble coating of claim 33 wherein said denatured protein is a member selected from the group consisting of denatured milk proteins, denatured whey proteins, denatured caseins, denatured wheat proteins, denatured soy proteins, denatured egg proteins, denatured peanut proteins, denatured corn zein and denatured keratin.
In particular, the protein is preferably a milk protein, a whey protein, caseins, a wheat protein, a soy protein, an egg protein, a peanut protein, corn zein or keratin.
In one embodiment, the protein is a milk protein, a whey protein, a casein, a wheat protein, a soy protein, an egg protein, a peanut protein, corn zein or keratin.
www.freepatentsonline.com /5543164.html   (7196 words)

  
 Competition between Protein Folding and Aggregation with Molecular Chaperones in Crowded Solutions: Insight from ...
of the native protein is 2 nm, and that of the denatured protein
for the fast-folding protein is a kinetic one.
the denatured proteins in the absence of the chaperone (Fig.
www.biophysj.org /cgi/content/full/85/6/3521   (3980 words)

  
 Rules of Protein Structure
The shape of a protein is determined by its primary structure (sequence of amino acids).
The sequence of amino acids in a protein is determined by the sequence of nucleotides in the gene (DNA) encoding it.
Protein aggregation is the cause of some disorders such as Alzheimer's disease, Huntington's disease, and prion diseases (e.g., "mad-cow" disease).
users.rcn.com /jkimball.ma.ultranet/BiologyPages/D/DenaturingProtein.html   (650 words)

  
 [No title]   (Site not responding. Last check: 2007-10-28)
For proteins intended for therapeutic use, the assay of choice is one accepted by a regulatory agency to which data on safety and efficacy of the protein must be submitted.
Denatured as applied to a protein in the present context, means that native secondary and tertiary structure is disrupted to an extent that the protein does not have biological activity.
Precipitates of denatured, covalently crosslinked, lysozyme were prepared by completely unfolding in the presence of 8M guanidine hydrochloride and 40 mM dithiothreitol to reduce the protein, followed by shock dilution in buffer and reoxidation.
www.wipo.int /cgi-pct/guest/getbykey5?KEY=00/02901.000120&ELEMENT_SET=DECL   (7677 words)

  
 Welcome to Wellwisdom: The Home of Immune Enhancing Proteins
Denatured: To cause the tertiary structure of (a protein) to unfold, as with heat, alkali, or acid, so that some of its original properties, especially its biological activity, are diminished or eliminated.
The influence of dietary whey protein on tissue glutathione and the diseases of aging.
Whey protein rich in alpha-lactalbumin increases the ratio of plasma tryptophan to the sum of the other large neutral amino acids and improves cognitive performance in stress-vulnerable subjects.
www.wellwisdom.com /research_sosna.php   (1534 words)

  
 [No title]
The damaged proteins are then filtered out and what's left is a slim range of proteins that have managed to survive the cheese manufacturing process.
Additionally, once the protein is denatured, the vital protein bound fats have been removed.
Proserum®, found in Whey Healthier Protein Meal, is an exceptional quality natural whey protein, and the result of years of work to perfect a proprietary filtration and drying which involves the minimum amount of processing.
www.mercola.com /forms/whey_healthier.htm   (2724 words)

  
 Biophysical Journal: Specific interaction between GroEL and denatured protein measured by compression-free force ...
It is generally accepted that the three-dimensional structure of a protein is dictated by its amino acid sequence, and the folding of a nascent polypeptide is a spontaneous event at least for small, simple proteins under controlled conditions (Anfinsen, 1973).
Since the immobilized protein on the tip was denatured and flexible, such an operation still gave rise to force curves signifying positive interactions.
We used porcine pepsin (Sigma, St. Louis, MO) as a model of the denatured protein because it is known to lose its native conformation at a neutral pH and interact with GroEL (McPhine, 1989; Aoki et al., 1997).
www.24hourscholar.com /p/articles/mi_qa3938/is_200307/ai_n9283517   (1442 words)

  
 Molten globule-like state of human serum albumin at low pH -- Muzammil et al. 266 (1): 26 -- FEBS Journal   (Site not responding. Last check: 2007-10-28)
Carra, J.H., Elizabeth, A.A. and Privalov, P.L. (1994) Thermodynamics of staphylococcal nuclease denaturation.
Ahmad, F. and Salahuddin, A. (1974) Influence of temperature on the intrinsic viscosities of proteins in random coil conformation.
Johnson, C.M. and Fersht, A.R. (1995) Protein stability as a function of denaturant concentration: thermal stability of barnase in the presence of urea.
content.febsjournal.org /cgi/content/full/266/1/26   (3780 words)

  
 Compactness of the denatured state of a fast-folding protein measured by submillisecond small-angle x-ray scattering -- ...
Compactness of the denatured state of a fast-folding protein measured by submillisecond small-angle x-ray scattering -- Pollack et al.
A simple calculation based on these average numbers and using the rate constants for a pH jump to 4.5 (15, 18), indicates that 45% of the protein above pH 3 at this location was in the denatured state and 55% was in the native state.
denatured structures in a roughly 5:1 ratio (18).
www.pnas.org /cgi/content/full/96/18/10115   (3123 words)

  
 Specific Interaction between GroEL and Denatured Protein Measured by Compression-Free Force Spectroscopy -- Sekiguchi ...
of a protein is dictated by its amino acid sequence, and the
the denatured protein because it is known to lose its native
Protein folding in the cell: competing models of chaperonin function.
www.biophysj.org /cgi/content/full/85/1/484   (4007 words)

  
 Denatured Protein   (Site not responding. Last check: 2007-10-28)
As an egg is cooked, the egg white proteins (albumins) denature -- unfold and refold randomly.
However, inside every living cell, there are proteins called chaperones whose job it is to renature proteins.
As new proteins are made, chaperones hang around to supervise (hence the name) and make sure that new chain of amino acids gets folded correctly.
www.newton.dep.anl.gov /askasci/mole00/mole00018.htm   (167 words)

  
 Designer Whey Protein - 2 lb
Designer Whey Protein is quick to fix, easy to mix & easy for your body to use.
These peptides, short & long chains of amino acids bonded together, are the preferred method for human metabolism to absorb amino acids (nitrogen) from digested protein.
APT - Full Spectrum Whey Peptides (whey protein concentrate, ion-exchange whey), whey glutamine peptide blend, D-glucose, lecithin, natural & artificial flavoring, magnesium oxide, malic acid, cellulose gum, momordica extract, sodium chloride, potassium chloride, xanthan/sodium alginate, annatto, acesulfame-K, stevia, calcium pantothenate, pyridoxine HCL, thiamin, riboflavin, cyanocobalamin, Vitamin E, lactoperoxidase.
www.global-nutrition-inc.com /nn-001.html   (471 words)

  
 Glutathione (GSH) - Your Whey to Health
It is a small protein molecule formed from the amino acids cysteine, glycine, and glutamic acid.
Your cell's ability to make glutathione is determined by the supply of raw materials (or glutathione precursors), in particular of the amino acid cysteine.
Interestingly, whey protein has also been found to raise glutathione levels.
www.1whey2health.com   (1347 words)

  
 Protein product denaturing, protein supplements denaturing question, whey protein and whey protein supplementation query
Protein product denaturing, protein supplements denaturing question, whey protein and whey protein supplementation query
Some whey proteins can be denatured if heat is used in their processing.
LA Whey and Bio_Activatorhave been cold-processed so there is no denaturing.
www.lamuscle.com /docs/world/faq-view.php?id=14   (50 words)

  
 Denatured - Denatured Alcohol vs Methyl Hydrate   (Site not responding. Last check: 2007-10-28)
Project: New structures and textures based on acid denatured whey proteins.
Abstract - Structural transitions in the protein L denatured state
THE REACTIVITY OF PORPHYRINDIN IN THE PRESENCE OF DENATURED PROTEINS
allcatches.com /a/denatured.html   (205 words)

  
 ATP causes small heat shock proteins to release denatured protein -- Wang and Spector 268 (24): 6335 -- FEBS Journal   (Site not responding. Last check: 2007-10-28)
ATP causes small heat shock proteins to release denatured protein -- Wang and Spector 268 (24): 6335 -- FEBS Journal
ATP causes small heat shock proteins to release denatured protein
Small heat-shock proteins (sHSPs) are a ubiquitous family of
content.febsjournal.org /cgi/content/abstract/268/24/6335   (325 words)

  
 Excluded volume in the configurational distribution of a strongly-denatured protein -- PETRESCU et al. 7 (6): 1396 -- ...
Excluded volume in the configurational distribution of a strongly-denatured protein -- PETRESCU et al.
gyration of the chain increases by a factor of 4 on denaturation, whereas
studies of folding of the protein can be envisaged.
www.proteinscience.org /cgi/content/abstract/7/6/1396   (311 words)

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