The Science Studio with James D. Watson
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Discovery of DNA Structure and Function: Watson and Crick By: Leslie A
01/08/2018 Discovery of DNA Double Helix: Watson and Crick | Learn Science at Scitable NUCLEIC ACID STRUCTURE AND FUNCTION | Lead Editor: Bob Moss Discovery of DNA Structure and Function: Watson and Crick By: Leslie A. Pray, Ph.D. © 2008 Nature Education Citation: Pray, L. (2008) Discovery of DNA structure and function: Watson and Crick. Nature Education 1(1):100 The landmark ideas of Watson and Crick relied heavily on the work of other scientists. What did the duo actually discover? Aa Aa Aa Many people believe that American biologist James Watson and English physicist Francis Crick discovered DNA in the 1950s. In reality, this is not the case. Rather, DNA was first identified in the late 1860s by Swiss chemist Friedrich Miescher. Then, in the decades following Miescher's discovery, other scientists--notably, Phoebus Levene and Erwin Chargaff--carried out a series of research efforts that revealed additional details about the DNA molecule, including its primary chemical components and the ways in which they joined with one another. Without the scientific foundation provided by these pioneers, Watson and Crick may never have reached their groundbreaking conclusion of 1953: that the DNA molecule exists in the form of a three-dimensional double helix. The First Piece of the Puzzle: Miescher Discovers DNA Although few people realize it, 1869 was a landmark year in genetic research, because it was the year in which Swiss physiological chemist Friedrich Miescher first identified what he called "nuclein" inside the nuclei of human white blood cells. (The term "nuclein" was later changed to "nucleic acid" and eventually to "deoxyribonucleic acid," or "DNA.") Miescher's plan was to isolate and characterize not the nuclein (which nobody at that time realized existed) but instead the protein components of leukocytes (white blood cells). -
Biochemistrystanford00kornrich.Pdf
University of California Berkeley Regional Oral History Office University of California The Bancroft Library Berkeley, California Program in the History of the Biosciences and Biotechnology Arthur Kornberg, M.D. BIOCHEMISTRY AT STANFORD, BIOTECHNOLOGY AT DNAX With an Introduction by Joshua Lederberg Interviews Conducted by Sally Smith Hughes, Ph.D. in 1997 Copyright 1998 by The Regents of the University of California Since 1954 the Regional Oral History Office has been interviewing leading participants in or well-placed witnesses to major events in the development of Northern California, the West, and the Nation. Oral history is a method of collecting historical information through tape-recorded interviews between a narrator with firsthand knowledge of historically significant events and a well- informed interviewer, with the goal of preserving substantive additions to the historical record. The tape recording is transcribed, lightly edited for continuity and clarity, and reviewed by the interviewee. The corrected manuscript is indexed, bound with photographs and illustrative materials, and placed in The Bancroft Library at the University of California, Berkeley, and in other research collections for scholarly use. Because it is primary material, oral history is not intended to present the final, verified, or complete narrative of events. It is a spoken account, offered by the interviewee in response to questioning, and as such it is reflective, partisan, deeply involved, and irreplaceable. ************************************ All uses of this manuscript are covered by a legal agreement between The Regents of the University of California and Arthur Kornberg, M.D., dated June 18, 1997. The manuscript is thereby made available for research purposes. All literary rights in the manuscript, including the right to publish, are reserved to The Bancroft Library of the University of California, Berkeley. -
Lecture Program
EARL W. SUTHERLAND LECTURE EARL W. SUTHERLAND LECTURE The Earl W. Sutherland Lecture Series was established by the SPONSORED BY: Department of Molecular Physiology and Biophysics in 1997 DEPARTMENT OF MOLECULAR PHYSIOLOGY AND BIOPHYSICS to honor Dr. Sutherland, a former member of this department and winner of the 1971 Nobel Prize in Physiology or Medicine. This series highlights important advances in cell signaling. ROBERT J. LEFKOWITZ, MD NOBEL PRIZE IN CHEMISTRY, 2012 SPEAKERS IN THIS SERIES HAVE INCLUDED: SEVEN TRANSMEMBRANE RECEPTORS Edmond H. Fischer (1997) Alfred G. Gilman (1999) Ferid Murad (2001) Louis J. Ignarro (2003) MARCH 31, 2016 Paul Greengard (2007) 4:00 P.M. 208 LIGHT HALL Eric Kandel (2009) Roger Tsien (2011) Michael S. Brown (2013) 867-2923-Institution-Discovery Lecture Series-Lefkowitz-BK-CH.indd 1 3/11/16 9:39 AM EARL W. SUTHERLAND, 1915-1974 ROBERT J. LEFKOWITZ, MD JAMES B. DUKE PROFESSOR, Earl W. Sutherland grew up in Burlingame, Kansas, a small farming community DUKE UNIVERSITY MEDICAL CENTER that nourished his love for the outdoors and fishing, which he retained throughout INVESTIGATOR, HOWARD HUGHES MEDICAL INSTITUTE his life. He graduated from Washburn College in 1937 and then received his MEMBER, NATIONAL ACADEMY OF SCIENCES M.D. from Washington University School of Medicine in 1942. After serving as a MEMBER, INSTITUTE OF MEDICINE medical officer during World War II, he returned to Washington University to train NOBEL PRIZE IN CHEMISTRY, 2012 with Carl and Gerty Cori. During those years he was influenced by his interactions with such eminent scientists as Louis Leloir, Herman Kalckar, Severo Ochoa, Arthur Kornberg, Christian deDuve, Sidney Colowick, Edwin Krebs, Theodore Robert J. -
James D. Watson Molecular Biologist, Nobel Laureate ( 1928 – )
James D. Watson Molecular biologist, Nobel Laureate ( 1928 – ) Watson is a molecular biologist, best known as one of the co-discoverers of the struc- ture of DNA. Watson, Francis Crick, and Maurice Wilkins were awarded the 1962 Nobel Prize in Physiology or Medicine. Watson was born in Chicago, and early on showed his brilliance, appearing on Quiz Kids, a popular radio show that challenged precocious youngsters to answer ques- tions. Thanks to the liberal policy of University of Chicago president ROBERT HUTCHINS, Watson was able to enroll there at the age of 15, earning a B.S. in Zoology in 1947. He was attracted to the work of Salvador Luria, who eventually shared a Nobel Prize with Max Delbrück for their work on the nature of genetic mutations. In 1948, Watson began research in Luria’s laboratory and he received his Ph.D. in Zoology at Indiana University in 1950 at age 22. In 1951, the chemist Linus Pauling published his model of the protein alpha helix, find- ings that grew out of Pauling’s relentless efforts in X-ray crystallography and molecu- lar model building. Watson now wanted to learn to perform X-ray diffraction experi- ments so that he could work to determine the structure of DNA. Watson and Francis Crick proceeded to deduce the double helix structure of DNA, which they submitted to the journal Nature and was subsequently published on April 25, 1953. Watson subsequently presented a paper on the double helical structure of DNA at the Cold Spring Harbor Symposium on Viruses in early June 1953. -
Jewels in the Crown
Jewels in the crown CSHL’s 8 Nobel laureates Eight scientists who have worked at Cold Max Delbrück and Salvador Luria Spring Harbor Laboratory over its first 125 years have earned the ultimate Beginning in 1941, two scientists, both refugees of European honor, the Nobel Prize for Physiology fascism, began spending their summers doing research at Cold or Medicine. Some have been full- Spring Harbor. In this idyllic setting, the pair—who had full-time time faculty members; others came appointments elsewhere—explored the deep mystery of genetics to the Lab to do summer research by exploiting the simplicity of tiny viruses called bacteriophages, or a postdoctoral fellowship. Two, or phages, which infect bacteria. Max Delbrück and Salvador who performed experiments at Luria, original protagonists in what came to be called the Phage the Lab as part of the historic Group, were at the center of a movement whose members made Phage Group, later served as seminal discoveries that launched the revolutionary field of mo- Directors. lecular genetics. Their distinctive math- and physics-oriented ap- Peter Tarr proach to biology, partly a reflection of Delbrück’s physics train- ing, was propagated far and wide via the famous Phage Course that Delbrück first taught in 1945. The famous Luria-Delbrück experiment of 1943 showed that genetic mutations occur ran- domly in bacteria, not necessarily in response to selection. The pair also showed that resistance was a heritable trait in the tiny organisms. Delbrück and Luria, along with Alfred Hershey, were awarded a Nobel Prize in 1969 “for their discoveries concerning the replication mechanism and the genetic structure of viruses.” Barbara McClintock Alfred Hershey Today we know that “jumping genes”—transposable elements (TEs)—are littered everywhere, like so much Alfred Hershey first came to Cold Spring Harbor to participate in Phage Group wreckage, in the chromosomes of every organism. -
Nobel Prizes
W W de Herder Heroes in endocrinology: 1–11 3:R94 Review Nobel Prizes Open Access Heroes in endocrinology: Nobel Prizes Correspondence Wouter W de Herder should be addressed to W W de Herder Section of Endocrinology, Department of Internal Medicine, Erasmus MC, ’s Gravendijkwal 230, 3015 CE Rotterdam, Email The Netherlands [email protected] Abstract The Nobel Prize in Physiology or Medicine was first awarded in 1901. Since then, the Nobel Key Words Prizes in Physiology or Medicine, Chemistry and Physics have been awarded to at least 33 " diabetes distinguished researchers who were directly or indirectly involved in research into the field " pituitary of endocrinology. This paper reflects on the life histories, careers and achievements of 11 of " thyroid them: Frederick G Banting, Roger Guillemin, Philip S Hench, Bernardo A Houssay, Edward " adrenal C Kendall, E Theodor Kocher, John J R Macleod, Tadeus Reichstein, Andrew V Schally, Earl " neuroendocrinology W Sutherland, Jr and Rosalyn Yalow. All were eminent scientists, distinguished lecturers and winners of many prizes and awards. Endocrine Connections (2014) 3, R94–R104 Introduction Endocrine Connections Among all the prizes awarded for life achievements in In 1901, the first prize was awarded to the German medical research, the Nobel Prize in Physiology or physiologist Emil A von Behring (3, 4). This award heralded Medicine is considered the most prestigious. the first recognition of extraordinary advances in medicine The Swedish chemist and engineer, Alfred Bernhard that has become the legacy of Nobel’s prescient idea to Nobel (1833–1896), is well known as the inventor of recognise global excellence. -
Moore Noller
2002 Ada Doisy Lectures Ada Doisy Lecturers 2003 in BIOCHEMISTRY Sponsored by the Department of Biochemistry • University of Illinois at Urbana-Champaign Dr. Peter B. 1970-71 Charles Huggins* and Elwood V. Jensen A76 1972-73 Paul Berg* and Walter Gilbert* Moore 1973-74 Saul Roseman and Bruce Ames Department of Molecular carbonyl Biophysics & Biochemistry Phe 1974-75 Arthur Kornberg* and Osamu Hayaishi Yale University C75 1976-77 Luis F. Leloir* New Haven, Connecticutt 1977-78 Albert L. Lehninger and Efraim Racker 2' OH attacking 1978-79 Donald D. Brown and Herbert Boyer amino N3 Tyr 1979-80 Charles Yanofsky A76 4:00 p.m. A2486 1980-81 Leroy E. Hood Thursday, May 1, 2003 (2491) 1983-84 Joseph L. Goldstein* and Michael S. Brown* Medical Sciences Auditorium 1984-85 Joan Steitz and Phillip Sharp* Structure and Function in 1985-86 Stephen J. Benkovic and Jeremy R. Knowles the Large Ribosomal Subunit 1986-87 Tom Maniatis and Mark Ptashne 1988-89 J. Michael Bishop* and Harold E. Varmus* 1989-90 Kurt Wüthrich Dr. Harry F. 1990-91 Edmond H. Fischer* and Edwin G. Krebs* 1993-94 Bert W. O’Malley Noller 1994-95 Earl W. Davie and John W. Suttie Director, Center for Molecular Biology of RNA 1995-96 Richard J. Roberts* University of California, Santa Cruz 1996-97 Ronald M. Evans Santa Cruz, California 1998-99 Elizabeth H. Blackburn 1999-2000 Carl R. Woese and Norman R. Pace 2000-01 Willem P. C. Stemmer and Ronald W. Davis 2001-02 Janos K. Lanyi and Sir John E. Walker* 12:00 noon 2002-03 Peter B. -
Max Ludwig Henning Delbruck (1906–1981) [1]
Published on The Embryo Project Encyclopedia (https://embryo.asu.edu) Max Ludwig Henning Delbruck (1906–1981) [1] By: Hernandez, Victoria Max Ludwig Henning Delbrück applied his knowledge of theoretical physics to biological systems such as bacterial viruses called bacteriophages, or phages, and gene replication during the twentieth century in Germany and the US. Delbrück demonstrated that bacteria undergo random genetic mutations to resist phage infections. Those findings linked bacterial genetics to the genetics of higher organisms. In the mid-twentieth century, Delbrück helped start the Phage Group and Phage Course in the US, which further organized phage research. Delbrück also contributed to the DNA replication debate that culminated in the 1958 Meselson-Stahl experiment, which demonstrated how organisms replicate their genetic information. For his work with phages, Delbrück earned part of the 1969 Nobel Prize for Physiology or Medicine. Delbrück's work helped shape and establish new fields in molecular biology and genetics to investigate the laws of inheritance and development. Delbrück was born on 4 September 1906, as the last of seven children of Lina and Hans Delbrück, in Berlin, Germany. Delbrück grew up in Grunewald, a suburb of Berlin. In 1914, World War I [2] began. During the war, Delbrück's family struggled with food shortages and in 1917 Delbrück's oldest brother died in combat. After the war ended in 1918, Delbrück began to study astronomy. Some nights, Delbrück woke up in the middle of the night to observe the stars with his telescope. He also read about the seventeenth-century astronomer Johannes Kepler, who studied planetary motion in late sixteenth and early seventeenth century Germany. -
MCDB 5220 Methods and Logics April 21 2015 Marcelo Bassalo
Cracking the Genetic Code MCDB 5220 Methods and Logics April 21 2015 Marcelo Bassalo The DNA Saga… so far Important contributions for cracking the genetic code: • The “transforming principle” (1928) Frederick Griffith The DNA Saga… so far Important contributions for cracking the genetic code: • The “transforming principle” (1928) • The nature of the transforming principle: DNA (1944 - 1952) Oswald Avery Alfred Hershey Martha Chase The DNA Saga… so far Important contributions for cracking the genetic code: • The “transforming principle” (1928) • The nature of the transforming principle: DNA (1944 - 1952) • X-ray diffraction and the structure of proteins (1951) Linus Carl Pauling The DNA Saga… so far Important contributions for cracking the genetic code: • The “transforming principle” (1928) • The nature of the transforming principle: DNA (1944 - 1952) • X-ray diffraction and the structure of proteins (1951) • The structure of DNA (1953) James Watson and Francis Crick The DNA Saga… so far Important contributions for cracking the genetic code: • The “transforming principle” (1928) • The nature of the transforming principle: DNA (1944 - 1952) • X-ray diffraction and the structure of proteins (1951) • The structure of DNA (1953) How is DNA (4 nucleotides) the genetic material while proteins (20 amino acids) are the building blocks? ? DNA Protein ? The Coding Craze ? DNA Protein What was already known? • DNA resides inside the nucleus - DNA is not the carrier • Protein synthesis occur in the cytoplasm through ribosomes {• Only RNA is associated with ribosomes (no DNA) - rRNA is not the carrier { • Ribosomal RNA (rRNA) was a homogeneous population The “messenger RNA” hypothesis François Jacob Jacques Monod The Coding Craze ? DNA RNA Protein RNA Tie Club Table from Wikipedia The Coding Craze Who won the race Marshall Nirenberg J. -
Happy Birthday to Renato Dulbecco, Cancer Researcher Extraordinaire
pbs.org http://www.pbs.org/newshour/updates/happy-birthday-renato-dulbecco-cancer-researcher-extraordinaire/ Happy birthday to Renato Dulbecco, cancer researcher extraordinaire Photo of Renato Dulbecco (public domain) Every elementary school student knows that Feb. 22 is George Washington’s birthday. Far fewer (if any) know that it is also the birthday of the Nobel Prize-winning scientist Renato Dulbecco. While not the father of his country — he was born in Italy and immigrated to the United States in 1947 — Renato Dulbecco is credited with playing a crucial role in our understanding of oncoviruses, a class of viruses that cause cancer when they infect animal cells. Dulbecco was born in Catanzaro, the capital of the Calabria region of Italy. Early in his childhood, after his father was drafted into the army during World War I, his family moved to northern Italy (first Cuneo, then Turin, and thence to Liguria). A bright boy, young Renato whizzed through high school and graduated in 1930 at the age of 16. From there, he attended the University of Turin, where he studied mathematics, physics, and ultimately medicine. Dulbecco found biology far more fascinating than the actual practice of medicine. As a result, he studied under the famed anatomist, Giuseppe Levi, and graduated at age 22 in 1936 at the top of his class with a degree in morbid anatomy and pathology (in essence, the study of disease). Soon after receiving his diploma, Dr. Dulbecco was inducted into the Italian army as a medical officer. Although he completed his military tour of duty by 1938, he was called back in 1940 when Italy entered World War II. -
Martha Chase Dies
PublisherInfo PublisherName : BioMed Central PublisherLocation : London PublisherImprintName : BioMed Central Martha Chase dies ArticleInfo ArticleID : 4830 ArticleDOI : 10.1186/gb-spotlight-20030820-01 ArticleCitationID : spotlight-20030820-01 ArticleSequenceNumber : 182 ArticleCategory : Research news ArticleFirstPage : 1 ArticleLastPage : 4 RegistrationDate : 2003–8–20 ArticleHistory : OnlineDate : 2003–8–20 ArticleCopyright : BioMed Central Ltd2003 ArticleGrants : ArticleContext : 130594411 Milly Dawson Email: [email protected] Martha Chase, renowned for her part in the pivotal "blender experiment," which firmly established DNA as the substance that transmits genetic information, died of pneumonia on August 8 in Lorain, Ohio. She was 75. In 1952, Chase participated in what came to be known as the Hershey-Chase experiment in her capacity as a laboratory assistant to Alfred D. Hershey. He won a Nobel Prize for his insights into the nature of viruses in 1969, along with Max Delbrück and Salvador Luria. Peter Sherwood, a spokesman for Cold Spring Harbor Laboratory, where the work took place, described the Hershey-Chase study as "one of the most simple and elegant experiments in the early days of the emerging field of molecular biology." "Her name would always be associated with that experiment, so she is some sort of monument," said her longtime friend Waclaw Szybalski, who met her when he joined Cold Spring Harbor Laboratory in 1951 and who is now a professor of oncology at the University of Wisconsin-Madison. Szybalski attended the first staff presentation of the Hershey-Chase experiment and was so impressed that he invited Chase for dinner and dancing the same evening. "I had an impression that she did not realize what an important piece of work that she did, but I think that I convinced her that evening," he said. -
Arthur Kornberg Discovered (The First) DNA Polymerase Four
Arthur Kornberg discovered (the first) DNA polymerase Using an “in vitro” system for DNA polymerase activity: 1. Grow E. coli 2. Break open cells 3. Prepare soluble extract 4. Fractionate extract to resolve different proteins from each other; repeat; repeat 5. Search for DNA polymerase activity using an biochemical assay: incorporate radioactive building blocks into DNA chains Four requirements of DNA-templated (DNA-dependent) DNA polymerases • single-stranded template • deoxyribonucleotides with 5’ triphosphate (dNTPs) • magnesium ions • annealed primer with 3’ OH Synthesis ONLY occurs in the 5’-3’ direction Fig 4-1 E. coli DNA polymerase I 5’-3’ polymerase activity Primer has a 3’-OH Incoming dNTP has a 5’ triphosphate Pyrophosphate (PP) is lost when dNMP adds to the chain E. coli DNA polymerase I: 3 separable enzyme activities in 3 protein domains 5’-3’ polymerase + 3’-5’ exonuclease = Klenow fragment N C 5’-3’ exonuclease Fig 4-3 E. coli DNA polymerase I 3’-5’ exonuclease Opposite polarity compared to polymerase: polymerase activity must stop to allow 3’-5’ exonuclease activity No dNTP can be re-made in reversed 3’-5’ direction: dNMP released by hydrolysis of phosphodiester backboneFig 4-4 Proof-reading (editing) of misincorporated 3’ dNMP by the 3’-5’ exonuclease Fidelity is accuracy of template-cognate dNTP selection. It depends on the polymerase active site structure and the balance of competing polymerase and exonuclease activities. A mismatch disfavors extension and favors the exonuclease.Fig 4-5 Superimposed structure of the Klenow fragment of DNA pol I with two different DNAs “Fingers” “Thumb” “Palm” red/orange helix: 3’ in red is elongating blue/cyan helix: 3’ in blue is getting edited Fig 4-6 E.