Harvard University - Department of Molecular & Cellular Biology

MEMBERS OF THE BOARD OF TUTORS

Buratowski, Stephen, Ph.D.

BCMP, Harvard Medical School

http://tfiib.med.harvard.edu/

profile_image Our lab is interested in understanding eukaryotic gene expression. We are concentrating on two areas: (A) the functions and interactions of the RNA polymerase II (pol II) basal transcription factors and (B) the mRNA processing enzymes and their interactions with RNA pol II. Using the yeast Saccharomyces cerevisiae, a combination of biochemical and genetic techniques are being brought to bear on these questions. In recent years, all the basal transcription factors have been purified and their genes cloned. It is clear that several dozen proteins are required simply to initiate transcription. Therefore, it is now necessary to decipher the functions of each of the individual factors. Some of our recent projects: 1. The TFIID complex. TFIID is the basal factor that recognizes promoter DNA. We have developed a tandem affinity purification technique to purify TFIID (TATA-Binding Protein plus TBP-associated factors (TAFs)) to begin a biochemical analysis of the complex. We are using genetics to try to assign functions to individual TAF subunits. Most recently, we discovered a TAF (Bdf1) that has two bromodomains, a protein motif involved in interactions with histones. This protein may mediate the effects of histone acetylation on transcription. We have also found evidence that Bdf1 activity is regulated by phosphorylation. 2. TFIIH and phosphorylation of pol II. TFIIH has DNA helicase activity that unwinds DNA at the promoter. The complex also contains a kinase that phosphorylates the C-terminal domain (CTD) of pol II. We have discovered that the phosphorylated CTD acts as a binding site for mRNA processing enzymes, thereby linking transcription and mRNA processing. Interestingly, the pattern of CTD phosphorylation changes at various points of transcription initiation and elongation. It appears that these different phosphorylated forms bind different sets of factors involved in regulation of elongation, termination, capping, splicing, and polyadenylation. We are characterizing the various kinases and phosphatases that regulate the transcription cycle.

next tutor: Burton, Briana

Below is a listing of current tutors:

  • (1)   Aldovini, Anna , M.D., Division of Infectious Diseases, Children's Hospital
  • (2)   Auld, David , Ph.D., Department of Biology, Boston College
  • (3)   Ausubel, Frederick , Ph.D., Department of Molecular Biology, Massachusetts General Hospital
  • (4)   Berg, Howard , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (5)   Brenner, Michael , Ph.D., Division of Engineering and Applied Sciences, Harvard University
  • (6)   Brenner, Tamara , Ph.D., Life Sciences Division, Harvard University
  • (7)   Buratowski, Stephen , Ph.D., BCMP, Harvard Medical School
  • (8)   Burton, Briana , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (9)   Carroll, Michael , Ph.D., CBR Institute for Biomedical Research, Harvard Medical School
  • (10)   Chen, Bing , Ph.D., Laboratory of Molecular Medicine, Children's Hospital
  • (11)   Chou, James , Ph.D., BCMP, Harvard Medical School
  • (12)   Clapham, David , M.D., Ph.D., Department of Neurobiology, Children's Hospital
  • (13)   Clardy, John , Ph.D., BCMP, Harvard Medical School
  • (14)   D'Souza, Victoria , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (15)   DePace, Angela , Ph.D., Department of Systems Biology, Harvard Medical School
  • (16)   Dulac, Catherine , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (17)   Eck, Michael , M.D., Ph.D., BCMP, Dana-Farber Cancer Institute
  • (18)   Eggan, Kevin , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (19)   Engert, Florian , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (20)   Erikson, Raymond , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (21)   Fisher, David , M.D., Ph.D., Department of Pediatrics, Dana Farber Cancer Institute
  • (22)   Fraenkel, Dan , Ph.D., Microbiology and Molecular Genetics, Harvard Medical School
  • (23)   Fraenkel, Ernest , Ph.D., Division of Biological Engineering, Massachusetts Institute of Technology
  • (24)   Fraenkel, Paula , M.D., Hematology/Oncology, Beth Israel Deaconess Medical Center
  • (25)   Gaudet, Rachelle , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (26)   Goldfeld, Anne , M.D., CBR Institute for Biomedical Research, Harvard Medical School
  • (27)   Goldstein, Richard , Ph.D., Professor of Pediatrics, Boston Medical Center
  • (28)   Gray, Nathanael , Ph.D., BCMP, Harvard Medical School
  • (29)   Guidotti, Guido , M.D., Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (30)   Haigis, Marcia , Ph.D., Department of Pathology, Harvard Medical School
  • (31)   Harrison, Stephen , Ph.D., BCMP, Harvard Medical School
  • (32)   Hedley, Mary Lynne , Ph.D., MGI Pharma Biologics
  • (33)   Hinds, Philip , Ph.D., Molecular Oncology Research Institute, Tufts - New England Medical Center
  • (34)   Hung, Deborah , M.D., Ph.D., Microbiology and Molecular Genetics, Harvard Medical School
  • (35)   Hunter, Craig , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (36)   Jasanoff, Alan , Ph.D., Nuclear Engineering/Brain & Cognitive Sciences, Massachusetts Institute of Technology
  • (37)   Kahne, Daniel , Ph.D., Department of Chemistry and Chemical Biology, Harvard University
  • (38)   Kay, Jeremy , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (39)   Kieff, Elliott , M.D., Ph.D., Channing Laboratory, Brigham and Women's Hospital
  • (40)   Kirchhausen, Tomas , Ph.D., CBR Institute for Biomedical Research, Harvard Medical School
  • (41)   Kishony, Roy , Ph.D., Department of Systems Biology, Harvard Medical School
  • (42)   Kleckner, Nancy , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (43)   Kolter, Roberto , Ph.D., Microbiology and Molecular Genetics, Harvard Medical School
  • (44)   Kopcow, Hernan , Ph.D., Department of Medicine, Beth Israel Deaconess Medical Center
  • (45)   Kunes, Samuel , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (46)   Lahav, Galit , Ph.D., Department of Systems Biology, Harvard Medical School
  • (47)   Leschziner, Andres , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (48)   Liberles, Stephen , Ph.D., Department of Cell Biology, Harvard Medical School
  • (49)   Lichtman, Jeff , M.D., Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (50)   Lieberman, Judy , M.D., Ph.D., CBR Institute for Biomedical Research, Harvard Medical School
  • (51)   Lilley, Brendan , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (52)   Livingston, David , M.D., Department of Genetics, Dana-Farber Cancer Institute
  • (53)   Loeken, Mary , Ph.D., Developmental and Stem Cell Biology, Joslin Diabetes Center, Harvard Medical School
  • (54)   Losick, Richard , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (55)   Lue, Robert , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (56)   Magasanik, Boris , Ph.D., Biology Department, Massachusetts Institute of Technology
  • (57)   McKeon, Frank , Ph.D., Department of Cell Biology, Harvard Medical School
  • (58)   Michel, Thomas , M.D., Ph.D., Cardiovascular Division, Brigham and Women's Hospital
  • (59)   Miller, Jeffrey , Ph.D., Neuromuscular Biology & Disease Group, Boston Biomedical Research Institute
  • (60)   Miller, Theodore , Ph.D., Chief Executive Officer, Reify Corporation
  • (61)   Moazed, Danesh , Ph.D., Department of Cell Biology, Harvard Medical School
  • (62)   Murthy, Venkatesh , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (63)   Navia, Manuel , , Oxford Bioscience Partners
  • (64)   Nelson, David , Ph.D., Department of Physics, Harvard University
  • (65)   Olesen, James , Ph.D., Wilmer Cutler Pickering Hale and Door LLP
  • (66)   Peattie, Debra , MBA, Ph.D., Harvard University
  • (67)   Ranjbar, Shahin , Ph.D., Children's Hospital, Harvard Medical School
  • (68)   Rheinwald, James , Ph.D., Department of Dermatology, Brigham and Women's Hospital
  • (69)   Rivera-Feliciano, Jose , Ph.D., Stem Cell and Regenerative Biology, Harvard University
  • (70)   Sabeti, Pardis , D.Phil, M.D., FAS Center for Systems Biology, Harvard University
  • (71)   Sanes, Joshua , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (72)   Sassanfar, Mandana , Ph.D., Department of Biology, Massachusetts Institute of Technology
  • (73)   Sato, Vicki , Ph.D., Technology and Operations Management, Harvard Business School
  • (74)   Schier, Alexander , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (75)   Shamu, Caroline , Ph.D., Department of Systems Biology, Harvard Medical School
  • (76)   Shi, Yang , Ph.D., Department of Pathology, Harvard Medical School
  • (77)   Silberstein, Lev , M.D., Ph.D., Harvard University
  • (78)   Starnbach, Michael , Ph.D., Microbiology and Molecular Genetics, Harvard Medical School
  • (79)   Stern, Bodo , Ph.D., FAS Center for Systems Biology, Harvard University
  • (80)   Stern, Joel N.H. , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (81)   Strominger, Jack , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (82)   Sweadner, Kathleen , M.D., Harvard University
  • (83)   Tong, Jeffrey , Ph.D., Nora Therapeutics
  • (84)   Torello, A. Thomas , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (85)   Toth, Joseph , Ph.D., Merrimack Pharmaceuticals
  • (86)   Tucci, Greg , Ph.D., Department of Chemistry and Chemical Biology, Harvard University
  • (87)   Vaughan, Cheryl , Ph.D., Graduate Program in Biotechnology, Harvard University
  • (88)   Viel, Alain , Ph.D., Department of Molecular and Cellular Biology, Harvard University
  • (89)   Walker, Suzanne , Ph.D., Microbiology and Molecular Genetics, Harvard Medical School
  • (90)   Winston, Fred , Ph.D., Department of Genetics, Harvard Medical School