This person won a Nobel Prize

Roger D. Kornberg

From Wikipedia, the free encyclopedia
Jump to: navigation, search
Roger D. Kornberg
Roger Kornberg in 2006, at the Fairchild Auditorium, Stanford University
Born April 24, 1947 (1947-04-24) (age 69)
St. Louis, Missouri, United States
Residence United States
Nationality United States
Fields Molecular biology
Institutions Stanford University,
Hebrew University of Jerusalem,
Harvard Medical School
Alma mater Harvard University;
Stanford University
Known for Transmission of genetic information from DNA to RNA
Notable awards Nobel Prize in Chemistry

Roger David Kornberg (born (1947-04-24)April 24, 1947 ) is an American biochemist and Nobel prize winner. Kornberg got the Nobel Prize in Chemistry in 2006 for studying eukaryote transcription (the copying of information from DNA to RNA).[1][2]

Kornberg is a professor of Structural Biology at Stanford University School of Medicine. His father, Arthur Kornberg, was also a professor at Stanford University, and got the Nobel Prize in Physiology or Medicine in 1959.

Early life[change | change source]

Kornberg was born in St. Louis, Missouri to a Jewish family. He was the first of three children born to Arthur Kornberg and his wife, Sylvy. The parents worked together as biochemists. Roger Kornberg earned his bachelors degree from Harvard University in 1967 and his PhD from Stanford University in 1972. He then became a Fellow at the Laboratory of Molecular Biology at the University of Cambridge, England.

Important studies[change | change source]

All heredity is controlled by genes. For the cells to make use of the information in the genes, a copy of part of the gene must be made. The copying is called transcription. Transcription makes an RNA copy of part of the DNA. The RNA is moved out of the cell nucleus, to ribosomes, where it does its work. This is called messenger RNA and it gives the amino acid sequence for protein production. This second process is called translation. It works in all eukaryotes, including all plants and animals.

Kornberg worked with Aaron Klug and Francis Crick at the MRC in the 1970s. He discovered the nucleosome, a very important protein structure in chromosomes.[3] Nucleosomes form the basic repeating units of eukaryotic chromatin. This packs the large eukaryotic genomes into the nucleus and allows it to be controlled.

Kornberg made the discovery that signals to the RNA are made by a complex of proteins that they called mediator.[4] The Nobel Prize committee said, "the great complexity of eukaryotic organisms is enabled by the fine interplay between tissue-specific substances, enhancers in the DNA and mediator. The discovery of mediator is therefore a true milestone in the understanding of the transcription process".[5]

After long effort, Kornberg was able to use X-ray crystallography to take 3D pictures of RNA molecules, lipids and proteins.[6][7][8] With these studies, Kornberg has created a picture of how DNA works. The Nobel Prize committee said, "the truly revolutionary aspect of the picture Kornberg has created is that it captures the process of transcription in full flow. What we see is an RNA-strand being constructed, and hence the exact positions of the DNA, polymerase and RNA during this process".[9]

In 1959, Roger Kornberg's father, Arthur Kornberg, received the Nobel Prize in Physiology or Medicine for studies of how genetic information moves from one DNA molecule to another. This is called DNA replication. Arthur Kornberg found the first enzyme that could make DNA. This was the first known enzyme to take its instructions from a DNA copy. Roger Kornbergs younger brother, Thomas Bill Kornberg, discovered DNA polymerases II and III in 1970 and is now a geneticist at the University of California, San Francisco. All three Kornbergs have worked to understand how genetic information is used in cells. Arthur and Roger Kornberg are the sixth father and son to win Nobel Prizes.

Awards[change | change source]

Professor Kornberg has received these awards:

References[change | change source]

  1. "Roger Kornberg wins the 2006 Nobel Prize in Chemistry". Stanford University School of Medicine.
  2. "Press release: The Nobel Prize in Chemistry 2006". Royal Swedish Academy of Sciences.
  3. Kornberg R.D. 1974. Chromatin structure: a repeating unit of histones and DNA. Science 184, 868-871.
  4. Kelleher III R.J., Flanagan P.M. and Kornberg R.D. 1990. A novel mediator between activator proteins and the RNA polymerase II transcription apparatus. Cell 61, 1209-1215.
  5. The Nobel Prize in Chemistry 2006
  6. Cramer P. Bushnell D.A. and Kornberg R.D. 2001. Structural basis of transcription: RNA polymerase II at 2.8 ångstrom resolution. Science 292, 1863-1876.
  7. Gnatt A.L. Cramer P. Fu J. Bushnell D.A. and Kornberg R.D. 2001. Structural basis of transcription: an RNA polymerase II elongation complex at 3.3 Å resolution. Science 292, 1876-1882.
  8. Bushnell D.A. Westover K.D. Davis R.E. and Kornberg R.D. 2004. Structural basis of transcription: an RNA polymerase II – TFIIB cocrystal at 4.5 angstroms. Science 303, 983-988.
  9. A family story about life 2006
  10. "The 2005 Alfred P. Sloan, Jr. Laureate". Retrieved 2006-10-04.

Other websites[change | change source]