Robert G. Roeder (born June 3, 1942, in Boonville, Indiana, United States) is an American biochemist. He is known as a pioneer scientist in eukaryotic transcription. He discovered three distinct nuclear RNA polymerases in 1969 and characterized many proteins involved in the regulation of transcription, including basic transcription factors and the first mammalian gene-specific activator over five decades of research. He is the recipient of the Gairdner Foundation International Award in 2000, the Albert Lasker Award for Basic Medical Research in 2003, and the Kyoto Prize in 2021. He currently serves as Arnold and Mabel Beckman Professor and Head of the Laboratory of Biochemical and Molecular Biology at The Rockefeller University. Biography Roeder was born in Boonville, Indiana, USA in 1942. He received his B.A. summa cum laude in chemistry from Wabash College and his M.S. in chemistry from the University of Illinois. He received his Ph.D. in biochemistry in 1969 from the University of Washington, Seattle, where he worked with William J. Rutter. He did postdoctoral work with Donald D. Brown at the Carnegie Institution of Washington, in Baltimore, from 1969 to 1971. He was a member of the faculty at Washington University School of Medicine in St. Louis from 1971 to 1982, when he joined The Rockefeller University. In 1985, he was named Arnold and Mabel Beckman Professor. He was elected as a member of the National Academy of Sciences in 1988 and the American Academy of Arts and Sciences in 1995, and a foreign associate member of the European Molecular Biology Organization in 2003. Major discoveries 1969–1977: In 1969, as a graduate student at the University of Washington, Roeder discovers that three enzymes, called RNA polymerases, directly copy DNA to RNA in animal cells. As a professor at Washington University in St. Louis, he goes on to show that these enzymes, referred to as Pol I, II and III, recognize and copy distinct classes of genes. 1977-1979: Roeder develops cell-free systems to better study transcription. Composed of the purified RNA polymerases and components extracted from cell nuclei, the systems allow researchers to recreate transcription in a test tube in a way that faithfully mimics the real process in cells. 1980: The development of cell-free systems leads to the identification of complex sets of proteins called accessory factors that are essential for each individual RNA polymerase (e.g., TFIIA, TFIIB, TFIIE, TFIIF and TFIIH for Pol II, and TFIIIB