Protein - Wikipedia, the free encyclopedia
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Proteins (also known as polypeptides ) are organic compounds made of amino acids arranged in a linear chain and folded into a globular form. The amino acids in a polymer chain are joined together b...
en.wikipedia.org/wiki/Protein
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Thus, it is critical for the cell to be able to control the activities of many of its enzymes, and a number of intricate mechanisms have evolved to do just that. ... A second class of proteins, called phosphatases, ... Unlike the other control mechanisms described above, proteolytic cleavage is irreversible, and thus once...
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www.biologyreference.com/Co-Dn/Control-Mechanisms.html
www.biologyreference.com/Co-Dn/Control-Mechanisms.html
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39. Enzymes that control the activities of other proteins by phorphorylating them are called a. ATPases. b. microtubules. c. kinetochores. d. chromatin. e. protein kinases.
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www.billwilcox.net/Ch12online/12practisequestions.htm
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Some allosteric proteins are not enzymes, but nonetheless have an active site and an allosteric site. The regulatory proteins that control metabolic pathways involving end product repression, ... In the case of enzyme induction a negative effector molecule (called an inducer) binds to the allosteric site, causing the active...
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www.textbookofbacteriology.net/regulation.html
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E) As cells become more numerous, the protein kinases they produce begin to compete with each other, such that the proteins produced by one cell essentially cancel those produced by its neighbor ... Enzymes that control the activities of other proteins are called...
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www.biosciguy.com/web_test_files/test/AP%20Mitosis1%5B1...
www.biosciguy.com/web_test_files/test/AP%20Mitosis1%5B1%5D/ap%20mitosis1%5B1%5D.html
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Rhythmic fluctuations in regulatory protein concentrations are called a clock. Some of these proteins are protein kinases (enzymes that control activities of other proteins). By adding Phosphate to the target protein, the protein kinase turns the target protein on (usually).
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library.thinkquest.org/C006669/data/Biol/mitosis_2b.htm
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Cyt1Aa shows the lowest toxicity when used alone but is the most synergistic with any of the other proteins. ... During sporulation, various subspecies of the Gram-positive bacterium Bacillus thuringiensis produce large amounts of insecticidal crystal proteins (ICPs), the so-called -endotoxins (Schnepf et al., 1998 ),
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mic.sgmjournals.org/cgi/content/full/152/9/2651
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Because proteins called enzymes control most cell activities, a mutation affecting an enzyme can result in alteration of other cell components. A single gene mutation may have many effects if the enzyme it controls is involved in several metabolic processes.
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www.infoplease.com/ce6/sci/A0859845.html
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Enzymes are catalysts. Most are proteins. (A few ribonucleoprotein enzymes have been discovered and, ... Coenzymes may be covalently bound to the protein part (called the apoenzyme) of enzymes as a prosthetic group. ... Here, too, control mechanisms are at work that regulate the rate at which new enzymes are synthesized.
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users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Enzym...
users.rcn.com/jkimball.ma.ultranet/BiologyPages/E/Enzymes.html
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