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	CONK! Encyclopedia: Marshall_W._Nirenberg (Site not responding. Last check: 2007-10-19)
		Nirenberg's later research focused on neuroscience, neural development, and the homeobox genes.
		Nirenberg was born in New York City, the son of Harry and Minerva Nirenberg.
		Nirenberg was awarded the National Medal of Science in 1966 and the National Medal of Honor in 1968 by President Lyndon B. Johnson.
	www.conk.com /search/encyclopedia.cgi?q=Marshall_W._Nirenberg (597 words)

	Nirenberg and Matthaei experiment - Encyclopedia, History, Geography and Biography
		The Nirenberg and Matthaei experiment was a scientific experiment performed in 1961 by Marshall W. Nirenberg and Heinrich J. Matthaei.
		The experiment cracked the genetic code by using nucleic acid homopolymers to translate specific amino acids.
		In the experiment, an extract from bacterial cells that could make protein even when no intact living cells were present was prepared.
	www.arikah.net /encyclopedia/Nirenberg_and_Matthaei_experiment (196 words)

	Crick, Brenner et al. experiment - Wikipedia, the free encyclopedia
		experiment was a scientific experiment performed in 1961 by Francis Crick and Sydney Brenner.
		The experiment elucidated the nature gene expression and frameshift mutations.
		In the experiment, proflavin-induced mutations of the T4 bacteriophage gene, rIIB, were isolated.
	en.wikipedia.org /?title=Crick,_Brenner_et_al._experiment (187 words)

	The Lasker Foundation \| Lasker Luminaries \| Leder
		Nirenberg and Leder announced the development of the triplet binding assay at the Sixth International Congress of Biochemistry held in New York City.
		Leder resolved to explore the enigma of antibody formation and with completion of his postdoctoral work, he set up his own lab at NIH devoted to the study of immunology.
		Phil Leder's pioneering research in molecular genetics furthered the understanding that genetic re-shuffling-a sort of mix and match of gene components-was responsible for the great variety and specificity of immune responses.
	www.laskerfoundation.org /awards/kwood/leder/vignettes.shtml (1064 words)

	Nirenberg: Biographies
		Philip Leder (1934-) was a postdoctoral fellow in Marshall Nirenberg's laboratory who went on to become an important researcher in the field of oncogenes (cancer causing genes).
		Leder is best known for his research in understanding the genes that carry the code for cancer.
		Maxine Frank Singer (1931-) assisted Marshall Nirenberg in his coding research and went on to run her own laboratory at NIH and serve as president of the Carnegie Institute in Washington, D.C. Singer graduated from Swarthmore College and earned her Ph.D. in biochemistry from Yale University in 1957.
	history.nih.gov /exhibits/nirenberg/bios.htm (1803 words)

	The Lasker Foundation \| Lasker Luminaries \| Nirenberg \| Timeline
		Nirenberg is appointed research biochemist at NIH and begins his work on deciphering the genetic code.
		Nirenberg and Matthaei work out the first "word" of the genetic code when they show that UUU -three uridylic acid bases in a row- in artificial or synthetic RNA code for the amino acid phenylalanine.
		Nirenberg insists to the press that "at least thirteen biochemists at the NIH share the credit with him, including Philip Leder and Merton Bernfield who were more closely associated with him in the work on the genetic code.
	www.laskerfoundation.com /awards/kwood/nirenberg/timeline.shtml (1524 words)

	Marshall Warren Nirenberg - Wikipedia, the free encyclopedia
		Nirenberg teamed up with Heinrich J. Matthaei at the National Institutes of Health to answer these questions.
		Nirenberg received great scientific attention for these experiments.
		Khorana's experiments confirmed these results and completed the genetic code translation.
	en.wikipedia.org /wiki/Marshall_Warren_Nirenberg (631 words)

	DNA words are three letters long. (Site not responding. Last check: 2007-10-19)
		Nirenberg then went to the University of Michigan and in 1957 finished his Ph.D. He had become more interested in the question of life itself and wanted to know the essence.
		Nirenberg and his group also showed that with few exceptions, the genetic code was universal to all life on earth.
		Nirenberg shared the 1968 Nobel Prize in Physiology or Medicine with Har Gobind Khorana and Robert Holley.
	www.bioservers.org /dnaftb/text/22 (2341 words)

	Articles - List of famous experiments (Site not responding. Last check: 2007-10-19)
		Michelson-Morley experiment exposes weaknesses of the prevailing variant of the theory of luminiferous aether.
		Ernest Rutherford's gold foil experiment demonstrated that the positive charge and mass of an atom is concentrated in a small, central atomic nucleus, disproving the then-popular plum pudding model of the atom.
		Clyde L. Cowan and Frederick Reines confirm the existence of the neutrino in the neutrino experiment (1955)
	www.techize.com /articles/List_of_famous_experiments (824 words)

	Read about List of famous experiments at WorldVillage Encyclopedia. Research List of famous experiments and learn about ... (Site not responding. Last check: 2007-10-19)
		Luria-Delbruck experiment demonstrates that in bacteria, beneficial mutations arise in the absence of selection, rather than being a response to selection.
		Michelson-Morley experiment exposes weaknesses of the prevailing variant of the theory of
		gold foil experiment demonstrated that the positive charge and mass of an atom is concentrated in a small, central
	encyclopedia.worldvillage.com /s/b/List_of_famous_experiments (532 words)

	NIH Record--1/21/2003--Nobelist Nirenberg Honored at NHLBI Symposium at Natcher
		Nirenberg's prize-winning work began in the early 1960s when he was a newly appointed research biochemist at the National Institute of Arthritis, Metabolic and Digestive Diseases (NIAMDD, later NIDDK).
		Nirenberg told the symposium audience that one of his colleagues cautioned him that his experimental approach to this question "was suicidal." Despite this warning, he "went ahead and did it anyway!"
		Nirenberg's discovery was a major step in the path from classical genetics to molecular genetics, from biology to molecular biology and into the age of genomics and functional genomics.
	www.nih.gov /news/NIH-Record/01_21_2003/story03.htm (1397 words)

	Nirenberg: Scientific Instruments
		In Nirenberg's experiment, the electrophoresis instrument sorts synthetic RNA codons by electrically separating them according to weight.
		Nirenberg and Matthaei first used a mortar and pestle to grind up the cells and release the cell sap but soon graduated to the French press to create their cell-free system of E.
		Philip Leder and Charles Byrne of NIH designed the multiple Millipore filtration instrument, nicknamed the “multi-plater.” It tests 45 samples at once, a significant improvement over the single-plater technique which only tested one sample at a time.
	history.nih.gov /exhibits/nirenberg/instruments.htm (404 words)

	The Lasker Foundation \| Lasker Luminaries, Marshall Nirenberg
		Although his idea was never proven it stimulated the eventual success of Nirenberg and Matthaei in deciphering the human genetic code.
		Marshall Nirenberg completed his PhD in the biological chemistry lab of James Hogg at the University of Michigan.
		Elliot Volkin of Oak Ridge National Laboratory, TN, found that "the nucleotide composition of the small, rapidly made RNA resembled that of the infecting phage's DNA." The Volkin and Astrachan papers were initially ignored until it was realized in the scientific community that their research might just be valid.
	www.laskerfoundation.org /awards/kwood/nirenberg/people.shtml (1231 words)

	Genetic ciphering
		In 1957, a 30-year-old biochemist named Marshall Nirenberg began work at the National Institutes of Health (NIH) in Bethesda, MD. Nirenberg was one among a veritable litter of young talent at the NIH, where biochemistry occupied a privileged place.
		By the summer of 1960, Nirenberg concluded that cell-free protein synthesis was dependent on the DNA template that specified the RNA messenger.
		Nirenberg (along with Gobind Khorana and Robert Holley) matched them in 1968, when he was also awarded the Nobel Prize in Physiology or Medicine.
	pubs.acs.org /subscribe/journals/mdd/v04/i03/html/03timeline.html (1686 words)

	BCH5425 Molecular Biology and Biotechnology (Site not responding. Last check: 2007-10-19)
		Nirenberg and Matthei worked with bacterial extracts which contained everything needed for translation, with the exception of mRNA.
		Nirenberg and Leder used a filter which would allow RNA triplets and charged tRNA's to pass through, but would prevent passage of larger ribosomes.
		In a given experiment, if a unique charged tRNA were radiolabeled (on the amino acid), then it could be determined whether that particular charged tRNA was associated for by the unique triplet.
	wine1.sb.fsu.edu /bch5425/lect14/lect14.htm (722 words)

	List of famous experiments (Site not responding. Last check: 2007-10-19)
		Galileo Galilei uses a telescope to observe that the moons of Jupiter appear to circle Jupiter.
		Gregor Mendel's pea plant experiments lead him to surmize many of the fundamental theories of genetics (dominant vs recessive genes, the 1-2-1 ratio, see Mendelian inheritance) (1856-1863)
		Ernest Rutherford's Gold foil experiment disproved the plum pudding model of the atom which suggests that the positive charge and mass of the atom are almost uniformly distributed.
	www.sciencedaily.com /encyclopedia/list_of_famous_experiments (840 words)

	The Lasker Foundation \| Lasker Luminaries, Phil Leder
		Leder joined Marshall Nirenberg's lab at NIH in 1962, where they devised the triplet binding assay, a technique that significantly accelerated the process of elucidating the genetic code.
		Michaelson JS, Leder P.: beta-catenin is a downstream effector of Wnt-mediated tumorigenesis in the mammary gland.
		Vollrath B, Fitzgerald KJ, Leder P.: A murine homologue of the Drosophila brainiac gene shows homology to glycosyltransferases and is required for preimplantation development of the mouse.
	www.laskerfoundation.com /awards/library/leder/lumin_plcv.html (1885 words)

	Nirenberg and Leder experiment - Encyclopedia Glossary Meaning Explanation Nirenberg and Leder experiment (Site not responding. Last check: 2007-10-19)
		Nirenberg and Leder experiment - Encyclopedia Glossary Meaning Explanation Nirenberg and Leder experiment.
		By associating the tRNA with its specific amino acid, it was possible to determine the triplet mRNA sequence that coded for each amino acid.
		The orginal Nirenberg and Leder experiment article can be editet
	www.encyclopedia-glossary.com /en/Nirenberg-and-Leder-experiment.html (180 words)

	Timeline of scientific experiments - Open Encyclopedia (Site not responding. Last check: 2007-10-19)
		The Timeline below shows the date of publication of major scientific experiments.
		See also Timeline of scientific discoveries, Timeline of technological discoveries, List of timelines of Science and Technology, List of famous experiments.
		1955 - Clyde L. Cowan and Frederick Reines confirm the existence of the neutrino in the neutrino experiment
	open-encyclopedia.com /Timeline_of_scientific_experiments (528 words)

	Post-termination complex disassembly by ribosome recycling factor, a functional tRNA mimic
		In Figure 3D, the same experiments as in Figure 3A and C were performed but the centrifugation time was increased to show that there were no significant amounts of subunits present after the RRF reaction (left panel).
		In the experiments described in Figure 4, various amounts of RRF were mixed with the 50S subunits and the bound RRF was determined (Figure 4A).
		Nirenberg M and Leder P (1964) RNA codewords and protein synthesis: the effect of trinucleotides upon the binding of sRNA to ribosomes.
	www.nature.com /cgi-taf/dynapage.taf?file=/emboj/journal/v21/n9/full/7594447a.html (7422 words)

	History of Molecular Biology and Bioinformatics (Site not responding. Last check: 2007-10-19)
		The genetic experiments Mendel did with pea plants took him eight years (1856-1863) and he published his results in 1865.
		Morgan’s experiments also lead to Drosophila‘s unusual position as one of the best-studied organisms and most useful tools in genetic research to this day.
		Philip Leder and Nirenberg found an even better experimental protocol, and by 1965 the genetic code was almost completely solved.
	www.bioinformatics.nl /webportal/background/history.html (3616 words)

	The Lasker Foundation \| Lasker Luminaries, Philip Leder
		Leder: Well the initial experiment, as I mentioned before, was to show that some sequence of nucleotides in an artificial RNA molecule would drive the incorporation of a specific amino acid, which is a building block of a protein, into proteins.
		And the other major discovery is, in my view, the genetic code, because it has itself a universality, which ensures that the genetic code is largely identical from organism to organism.
		There are very few experiments and observations in biology that have that degree of generality.
	www.laskerfoundation.org /awards/library/lumin_int_pl.html (2802 words)

	The Marshall W. Nirenberg Papers: Translating the Code of Life and the Nobel Prize, 1962-1968
		While the poly-U experiment was proof that they had in effect "cracked" the genetic code, many scientists--especially the 1959 Nobel Laureate Severo Ochoa--were eager to take it to the next level.
		In a 1967 talk, Nirenberg characterized messenger RNA as a "robot" whose purpose was to obey the commands of DNA and carry out vital genetic instructions.
		In October 1968, Nirenberg received the news that he had won the Nobel Prize in Medicine or Physiology, an honor that he shared with Robert W. Holley and Har Gobind Khorana for their collective efforts in deciphering different aspects of the genetic code.
	profiles.nlm.nih.gov /JJ/Views/Exhibit/narrative/codeoflife.html (791 words)

	Griffith's experiment -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-19)
		Griffith used two ((physics) deformation of a physical body under the action of applied forces) strains of (Bacterium causing pneumonia in mice and humans) Pneumococcus (which infects (Click link for more info and facts about mice) mice), a S (smooth) and a R (rough) strain.
		In his experiment, ((microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered plants) bacteria from the S strain were killed by heat, and their remains were added to R strain bacteria.
		Both IIS and IIS strains pneumococcus were isolated from the mice’s blood, suggesting that they could not have resulted from the mutation of IIIR strain pneumococcus.
	www.absoluteastronomy.com /encyclopedia/G/Gr/Griffiths_experiment.htm (320 words)

	Lecture Notes, Genetics, Emporia State Univ.
		During protein synthesis, is the amino acid the structure that is recognized or is it the tRNA to ensure the correct sequence of amino acids?
		In 1961, Nirenberg and Ochoa produced an artificial RNA composed entirely of uracil, poly(U).
		Nirenberg and Matthaei took artificail mRNA and were able to synthesize a protein in a cell-free preparation of ribosome.
	www.emporia.edu /biosci/genetics/note15.htm (1802 words)

	SCIENCE AND THE ACADEMY IN THE ERA OF COMPUTER-MEDIATED COMMUNICATION
		When early academy founders referred to the need for creating an international community and of extracting their enterprise from verbal dispute, it was the new visual language in the pictorial statements of Vesalius or the triangles of Galileo or the illustrations of the moon's surface that made it possible.
		While experiments were going on with genet a number of nationally prominent molecular biologists had been pressing to start a NIH-sponsored central repository for DNA sequences.
		The actual biology will continue to be done as “small science”—depending on individual insight and inspiration to produce new knowledge—but the reagents that the scientist uses will include a knowledge of the primary sequence of the organism, together with a list of all previous deductions from that sequence.
	www.stanford.edu /dept/HPS/TimLenoir/IdealAcademy.htm (6721 words)

	Read about Nirenberg and Leder experiment at WorldVillage Encyclopedia. Research Nirenberg and Leder experiment and ... (Site not responding. Last check: 2007-10-19)
		Read about Nirenberg and Leder experiment at WorldVillage Encyclopedia.
		Research Nirenberg and Leder experiment and learn about Nirenberg and Leder experiment here!
		The Nirenberg and Leder experiment was a scientific experiment performed in 1964 by
	encyclopedia.worldvillage.com /s/b/Nirenberg_and_Leder_experiment (124 words)

	GenCode
		Nirenberg and Matthaei (1961) - in vitro (cell free) protein synthesis combined with RNA synthesis using the enzyme polynucleotide phosphorylase (RNA synthesis) - allowed investigation of the code
		They radioactively labeled one of the 20 amino acids in each experiment, in order to figure out what the triplet corresponding to UUU codes for (phenylalanine in this case).
		Nirenberg and Leder - 1964 - Triplet Binding Assay: Ribosomes, synthetic RNA triplets and tRNAs attached to a radioactively labeled amino acid.
	core.ecu.edu /biol/summersk/summerwebpage/biol2300/GenCode.htm (807 words)

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