Mark Ptashne

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Mark Ptashne

Mark Steven Ptashne (born June 5, 1940 in Chicago ) is an American molecular biologist and professor at the Memorial Sloan-Kettering Cancer Center .

Life

Ptashne earned a bachelor's degree in chemistry from Reed College in Portland , Oregon in 1961 and a Ph.D. in molecular biology from Harvard University in Cambridge , Massachusetts . In 1971 he received a professorship there in molecular biology and in 1997 a professorship at the Memorial Sloan-Kettering Cancer Center , New York City .

Ptashne is also a passionate violinist , owner of a Stradivarius violin and has made CD recordings with this instrument.

Act

Ptashne carried out fundamental work on the isolation of repressors , which play an important role in the regulation of cellular processes. He succeeded in elucidating the interaction between repressors and other proteins (e.g. Cro ), which in turn interact with the DNA . He was able to describe the three-dimensional structure of the repressor and interacting DNA. While first work was carried out on the bacteriophage Lambda and described the regulation between the lysogenic cycle and the lytic cycle , Ptashne was later able to describe similar processes in yeasts and higher organisms. Due to his work, the yeast protein GAL4 is one of the best-studied transcription factors . The discovery that transcription factors usually consist of separable domains that mediate DNA binding or the interaction with coactivators and corepressors was the prerequisite for many important molecular biological techniques, such as the yeast two-hybrid system .

Awards (selection)

literature

Web links

Commons : Mark Ptashne  - collection of images, videos and audio files
  • CV (PDF; 146 kB) at mskcc.org; accessed on January 23, 2016

Individual evidence

  1. BookRags.com: Mark Steven Ptashne , accessed November 13, 2010
  2. markptashne.com ( memento of January 2, 2014 in the Internet Archive ), accessed on November 13, 2010
  3. ^ A b 1997 Albert Lasker Basic Medical Research Award: Lambda repressor and gene regulation at laskerfoundation.org; accessed on April 30, 2019.
  4. L. Keegan, G. Gill, M. Ptashne: Separation of DNA binding from the transcription-activating function of a eukaryotic regulatory protein . In: Science . 231, February 14, 1086, pp. 699-704. doi : 10.1126 / science.3080805 . PMID 3080805 .
  5. Book of Members 1780 – present, Chapter P. (PDF; 649 kB) In: American Academy of Arts and Sciences (amacad.org). Retrieved April 30, 2019 .
  6. ^ The Louisa Gross Horwitz Prize for Biology Or ​​Biochemistry at columbia.edu; Retrieved November 12, 2010
  7. ^ Mark Ptashne PhD at the Gairdner Foundation (gairdner.org); Retrieved December 8, 2012
  8. Massry Prize Winners (1996 – Present) at usc.edu; accessed on April 30, 2019.