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Topic: Directed evolution

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	Directed Enzyme Evolution
		Directed evolution allows us to explore enzyme functions never required in the natural environment and for which the molecular basis is poorly understood.
		Evolution is usually the culprit: enzymes are optimized and often highly specialized for specific biological functions within the context of a living organism.
		Evolution does not work towards any particular direction, nor is there a goal; the underlying processes occur spontaneously during reproduction and survival of the whole organism.
	www.che.caltech.edu /groups/fha/Enzyme/directed.html (2973 words)

	God and Evolution
		Evolution, specifically common descent, tells us how life came to where it is, but it does not say why.
		If the question is whether evolution disproves the basic underlying theme of Genesis, that God created the world and the life in it, the answer is no. Evolution cannot say exactly why common descent chose the paths that it did.
		Evolution does not say what is right and what is wrong, but merely what has happened.
	www.talkorigins.org /faqs/faq-god.html (1616 words)

	Evolution - Wikipedia, the free encyclopedia
		Evolution is thus responsible for the vast diversity of life on Earth, including the many extinct species attested to in the fossil record.
		Hatena, a protist, is an extant organism that is undergoing endosymbiotic evolution.
		The chemical evolution (or abiogenesis) from self-catalytic chemical reactions to life (see Origin of life) is not a part of biological evolution, but it is unclear at which point such increasingly complex sets of reactions became what we would consider, today, to be living organisms.
	en.wikipedia.org /wiki/Evolution (9325 words)

	Directed Evolution (Solazyme)
		Directed evolution is a term used to describe a broad class of proprietary and public domain methods that can be used to optimize biological functions.
		From single proteins to single metabolic pathways to whole cell functions involving interrelated pathways, the directed evolution process is a highly efficient way to engineer an organism to perform a desired function.
		The directed evolution process as practiced by Solazyme is significantly automated through the use of robotic technology.
	www.solazyme.com /directed-evolution.shtml (313 words)

	Evolution at Princeton (Site not responding. Last check: 2007-10-08)
		Evolution is the core concept in biology, tying together findings from all biological disciplines into a coherent picture of the history of life on earth.
		The study of evolution is thus a broad and deep discipline, encompassing the study of molecules and the origins of life, the causes and consequences of mass extinctions, the structure, function and evolution of genomes and, of course, the evolution of organismal behavior and appearance.
		The study of evolution at Princeton is notable because of the strong emphasis on studying evolutionary phenomena at all biological levels, from single molecules to populations.
	www.princeton.edu /evolution (396 words)

	[No title]
		As the columns point in different directions and each produce their own image, these eyes do not give a good `image' but are very efficient at detecting movement at a considerable distance and its direction.
		Finally, the perfection of each individual being—that is to say, the perfection which you now see in man or apart from him, with regard to their atoms, members or powers—is due to the composition of the elements, to their measure, to their balance, to the mode of their combination, and to mutual influence.
		Therefore, this change of appearance, this evolution of members, this development and growth, even though we admit the reality of growth and progress, (if we admit that had formerly been a quadruped) does not prevent the species from being original.
	bahai-library.com /?file=davoodi_human_evolution_directed (16303 words)

	Directed Evolution (Site not responding. Last check: 2007-10-08)
		Directed Evolution is a general term used to describe various molecular biology techniques that mimic natural selection and are extremely useful for protein engineering.
		The development of such directed evolution stemmed from the observation that new protein characteristics often arise from non-obvious mutations.
		Gene shuffling (considered to be the standard method for directed evolution) is our mainstay method, although error-prone PCR and chemical mutagenesis are also being explored with various aminotransferases.
	chemgroups.ucdavis.edu /~toney/DirectedEvolution.html (192 words)

	Protein Folding and Misfolding, Directed Evolution & Enzymology
		Protein engineering and directed evolution are powerful tools for the study of the relationship between structure and function of enzymes and have important biotechnological applications in the design of new enzyme activities.
		Rational redesigns of activity may be hard to achieve, whereas the directed evolution of new activities relies only on suitable screens.
		Directed evolution experiments are well in-hand to produce new variants with useful properties and novel activities.
	bmbsgi10.leeds.ac.uk /abres.html (348 words)

	Book Review: "Directed Evolution: Philosophy, Theory and Practice."
		A basic premise of Directed Evolution is that many decisions have to be made to manage or control paths of technology evolution, and that in the present (third) wave, the necessary information for making those decisions is frequently lacking.
		Directed evolution diagnostics (which includes comparison of the historical data to the patterns and lines of evolution, developing the lines for this situation, finding missing steps and extrapolating to future steps.)
		Part one concludes with a section on teaching directed evolution to children, adults, and professional users, in which the authors claim (without showing the analysis) that directed evolution will become a widespread science and a key element in the advancement of human knowledge.
	www.triz-journal.com /archives/2001/05/c/index.htm (750 words)

	Directed evolution of microorganisms - Patent 6706503
		The present invention relates generally to methods for directing the evolution of a microoganism, that is for directing desired genetic change in a microorganism in response to conditions of selective pressure.
		After subjecting a microorganism to directed evolution using a mutator plasmid, the microorganism is cured of the mutator plasmid in order to restore the microorganism to wild-type mutation rates.
		The results indicate that after 3 months of applying directed evolutions techniques described herein to E. blattae, the tolerance to 1,3 propanediol was increased from 75 g/l to at least 105 g/l under aerobic conditions.
	www.freepatentsonline.com /6706503.html (9245 words)

	Microbial Cell Factories \| Full text \| Directed evolution strategies for improved enzymatic performance
		A frequent target for the directed evolution of enzymes is the improvement of thermostability which leads to more robust biocatalysts [4], and increased stability in organic solvents, as shown in a recent study on fructose bisphosphate aldolase [23].
		Such a screen, though effective in many cases, is not a direct measure of protein stability and is unsuitable for proteins that are reversibly unfolded, or those that are likely to become reversibly unfolded upon mutation [24], thus leading to false positives.
		Directed evolution using genetic techniques has led the way for engineering altered proteins during the last decade, yet there is still considerable scope for developing experimentally simpler and also more efficient techniques and strategies.
	www.microbialcellfactories.com /content/4/1/29 (3843 words)

	"'Rational Design' and 'Directed Evolution'"
		The second term, directed evolution, involves “harness[ing] natural selection at the molecular level and direct[ing] the evolution of proteins that are customized to meet specifications set by medicine, agriculture and industry” (Ibid.
		The most powerful form of directed evolution, DNA breeding, was invented by Stemmer, who describes it thus: “Select promising parents, breed them to create a diverse pool of genetic variants and select those offspring that have the best combination of desirable traits.
		Stemmer performed directed evolution on 4 distantly related microbes, testing their ability to produce the enzyme that fights off penicillin.
	www.rae.org /rdde.html (696 words)

	Evolution News & Views: Evolution: A Word We Can All Love
		This is quite different from the teleological evolution that some, including the Catholic Church, have considered a possibility.
		This distinction between directed and undirected evolution is commonly blurred by Darwinists and the MSM who love them.
		However, he is trained in evolutionary theory, so he knows better than most the enormous gulf between the idea of directed evolution and Neo-Darwinism's story of life evolving strictly by undirected causes like natural selection.
	www.evolutionnews.org /2005/04/evolution_a_word_we_can_all_love.html (648 words)

	Directed evolution and Bioinformatics
		Directed evolution is a technique that borrows much from the ideas of natural evolution and selective breeding.
		In the case of natural evolution the selection is for traits that increase the individual's ability to survive in the environment whereas selective breeding chooses traits that are of interest to man (for example increased grain size in crops, or coat colour in dogs).
		Directed evolution again operates to select on the basis of traits useful to the researcher, but in this case selection is at the level of the individual gene.
	www.aber.ac.uk /biology/MicroSite/winson1.html (522 words)

	Fraunhofer USA - Technology: Directed Evolution (Site not responding. Last check: 2007-10-08)
		Directed Evolution is a way of making better proteins than those found in nature.
		Directed Evolution differs from natural evolution in that the unit of screening is usually a single gene, rather than a whole organism.
		Furthermore, in Directed Evolution the investigator determines what property is desirable, rather than a natural selection.
	www.fraunhofer-cmb.org /index.cfm?act=tech_DirectedEvolution (133 words)

	The Bioinformatics Center at Rensselaer and Wadsworth. Research -- Directed Evolution
		Introduction: Directed Evolution is a relatively new field which is gaining significant attention recently.
		This is largely due to important implications of the results of this research to basic science of evolution as well as the practical use of this knowledge in biotechnology.
		The use of methods of Directed Evolution allow researchers to improve and "direct" such important biotechnological processes as biocatalysis.
	www.bioinfo.rpi.edu /research/directed_evolution.html (659 words)

	Directed enzyme evolution: Screening and selection methods. Methods in molecular biology Vol. 230 edited by Frances H. ...
		Number of publications per year in the area of directed evolution of proteins.
		The number is derived from a search of the ISI web-of-science database for "directed evolution" while excluding articles, the central theme of which is not the directed evolution of proteins.
		About half of these papers deal with the generation of new protein variants by library screening or selection; a third describe methodologies for generating genetic diversity, screening, and selection; and the remaining are primarily review papers.
	www.proteinscience.org /cgi/content/full/13/10/2836 (1080 words)

	"Self-Directed Evolution" by Sarah Belle Dougherty
		Part of self-directed evolution is becoming more aware of this ordinary self and its actions, consciously deciding where we want to go, and controlling ourselves so we can get there.
		This distinction lies at the root of the two paths of spiritual evolution, the path for the self and the path of compassion.
		Self-directed evolution is the opposite of floating along passively with the general evolutionary current, or reacting to circumstances in an unconscious way.
	www.theosophy-nw.org /theosnw/evol/ev-sbd.htm (1200 words)

	34 - Evolution Inc. » Pulse » Blog Archive
		It’s called “directed evolution,” and new generations of its rapidly evolving progeny are now springing forth in labs around the world.
		But directed evolution will bring changes far beyond those imagined by traditional breeders.
		Directed evolution is itself now evolving at a rapid pace.
	www.pulsethebook.com /building-blocks/34-evolution-inc (1192 words)

	RFP308-Directed Evolution
		Directed Evolution has formulated an innovated and socially beneficial solution that utilizes technology to solve many of the current problems, while improving the nature of the industry.
		Directed Evolution began by considering industries that affect the most number of people within the country.
		Directed Evolution proposes create a database with households’ soliciting preferences, initially implemented in New York State.
	www.rpi.edu /~akeraa/pe-IT/RFPs/308-Directed.html (1418 words)

	Voice of Customers Pushed By Directed Evolution
		The main characteristics of TRIZ methods are that several patterns and paths in structure forms for evolution of technology have been abstracted from researching a lot of patents.
		Avoid development of subsystems that passed maturity stage of evolution or that are in decline stage.
		A new procedure to obtain voice of the customers driven by directed evolution, a version of TTRIZ technology forecasting, is developed, in which Kano’s model and directed evolution are integrated.
	www.triz-journal.com /archives/2002/06/b/index.htm (2243 words)

	Directed evolution relieves product inhibition and confers in vivo function to a rationally designed tyrosine ...
		Cherry, J.R., Lamsa, M.H., Schneider, P., Vind, J., Svendsen, A., Jones, A., and Pedersen, A.H. Directed evolution of a fungal peroxidase.
		Matsumura, I. and Ellington, A.D. In vitro evolution of
		Stemmer, W.P. DNA shuffling by random fragmentation and reassembly: In vitro recombination for molecular evolution.
	www.proteinscience.org /cgi/content/full/13/3/763 (4332 words)

	Directed Evolution in Microreactors
		In different rounds of directed evolution we select for specificity as well as for activity (=kcat).
		Genetic diversity is created by error-prone PCR and semi rational design (=saturation mutagenesis of selected active site residues) followed by reshuffling of those libraries of mutated hPCAF genes.
		This event is not open to the general public and NSTI reserves the right to refuse admission and participation to any individual.
	www.nsti.org /Nanotech2006/showabstract.html?absno=485 (311 words)

	Laboratory-Directed Protein Evolution -- Yuan et al. 69 (3): 373 -- Microbiology and Molecular Biology Reviews
		directed evolution (50, 54, 83, 250, 255, 306, 307, 331, 332).
		Directed evolution of mesophilic enzymes into their thermophilic counterparts.
		In vitro evolution of a neutralizing human antibody to human immunodeficiency virus type 1 to enhance affinity and broaden strain cross-reactivity.
	mmbr.asm.org /cgi/content/full/69/3/373 (8567 words)

	Thermostabilization of Bacterial Fructosyl-Amino Acid Oxidase by Directed Evolution -- Sakaue and Kajiyama 69 (1): 139 ...
		thermostable mutant obtained by a fourth round of directed evolution.
		Isolation of the thermostable mutant FAOX in directed evolution.
		Directed evolution to improve the thermostability of prolyl endopeptidase.
	aem.asm.org /cgi/content/full/69/1/139 (3646 words)

	Directed evolution - Wikipedia, the free encyclopedia
		Directed evolution is a method used in protein engineering to harness the power of Darwinian selection to evolve proteins or RNA with desirable properties not found in nature.
		Most directed evolution projects seek to evolve properties that are useful to humans in an agricultural, medical or industrial context.
		It is thus possible to use this method to optimize properties that were not selected for in the original organism.
	en.wikipedia.org /wiki/Directed_evolution (307 words)

	Speeding through evolution - Gerald Joyce's directed-evolution experiments Discover - Find Articles
		Biologists and paleontologists are reduced to inferring the past from the flotsam of the fossil record, a record full of gaps.
		Whereas nature directs a huge and varied cast of characters--giraffes to ants, whales to worms, flu viruses to humans--the players in Joyce's laboratory drama are all tiny molecules of the genetic material RNA (single strands of ribonucleic acid as opposed to the deoxyribonucleic acid that forms DNA's double helix).
		Joyce's test-tube evolution not only lets us look at the genetic maneuverings within the evolutionary process, it suggests a visionary approach to developing medical drugs.
	www.findarticles.com /p/articles/mi_m1511/is_n5_v15/ai_15341763 (852 words)

	Optically Directed Evolution and the Development of GFP-based Biosensors (Site not responding. Last check: 2007-10-08)
		Combinatorial methods and directed evolution hold great promise for generating a large number of different novel catalytic and molecular recognition activities.
		Woodbury's lab is currently developing very high throughput directed evolution techniques based on both optical methods of detecting the desired expressed proteins in a library of variants and optical methods for rapid selection of the colonies of organisms that are expressing these proteins.
		Employing commercially available electronics that detect, amplify and process the optical signal on-chip, the resulting biochip is on the order of several square millimeters in size.
	photoscience.la.asu.edu /bionano/research2.htm (1490 words)

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