Abstract

DNA topoisomerases are the enzymes responsible for maintaining and controlling the topological state of DNA in the cell. They play an important role in replication, transcription and genetic recombination. Despite their importance, an understanding of their structure and detailed mechanism of action is just emerging. This project is concerned with the study of the structure of Escherichia coli DNA topoisomerases I and III. We have used SSRL data to study the structures of the 67 and the 30 kDa fragments of E. coli DNA topoisomerase I including complexes of the 67 kDA fragment with short oligonucleotides. We also collected data on the intact E. coli DNA topoisomerase III. We solved the structure of topoisomerase III by MIR using data collected at SSRL and we are currently refining the structure. The latter project could not be done without access to synchrotron radiation due to the size of the crystals.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
Biotechnology Resource Grants (P41)
Project #
3P41RR001209-23S1
Application #
6658547
Study Section
Project Start
2002-03-01
Project End
2003-02-28
Budget Start
Budget End
Support Year
23
Fiscal Year
2002
Total Cost
$143,176
Indirect Cost

  Institution

Name
Stanford University
Department
Type
DUNS #
800771545
City
Stanford
State
CA
Country
United States
Zip Code
94305

  Publications

Vickers, Chelsea; Liu, Feng; Abe, Kento et al. (2018) Endo-fucoidan hydrolases from glycoside hydrolase family 107 (GH107) display structural and mechanistic similarities to ?-l-fucosidases from GH29. J Biol Chem 293:18296-18308
Nguyen, Phong T; Lai, Jeffrey Y; Lee, Allen T et al. (2018) Noncanonical role for the binding protein in substrate uptake by the MetNI methionine ATP Binding Cassette (ABC) transporter. Proc Natl Acad Sci U S A 115:E10596-E10604
Aleman, Fernando; Tzarum, Netanel; Kong, Leopold et al. (2018) Immunogenetic and structural analysis of a class of HCV broadly neutralizing antibodies and their precursors. Proc Natl Acad Sci U S A 115:7569-7574
Herrera, Nadia; Maksaev, Grigory; Haswell, Elizabeth S et al. (2018) Elucidating a role for the cytoplasmic domain in the Mycobacterium tuberculosis mechanosensitive channel of large conductance. Sci Rep 8:14566
Lal, Neeraj K; Nagalakshmi, Ugrappa; Hurlburt, Nicholas K et al. (2018) The Receptor-like Cytoplasmic Kinase BIK1 Localizes to the Nucleus and Regulates Defense Hormone Expression during Plant Innate Immunity. Cell Host Microbe 23:485-497.e5
Pluvinage, Benjamin; Grondin, Julie M; Amundsen, Carolyn et al. (2018) Molecular basis of an agarose metabolic pathway acquired by a human intestinal symbiont. Nat Commun 9:1043
Beyerlein, Kenneth R; Jönsson, H Olof; Alonso-Mori, Roberto et al. (2018) Ultrafast nonthermal heating of water initiated by an X-ray Free-Electron Laser. Proc Natl Acad Sci U S A 115:5652-5657
Yoshizawa, Takuya; Ali, Rustam; Jiou, Jenny et al. (2018) Nuclear Import Receptor Inhibits Phase Separation of FUS through Binding to Multiple Sites. Cell 173:693-705.e22
Dods, Robert; Båth, Petra; Arnlund, David et al. (2017) From Macrocrystals to Microcrystals: A Strategy for Membrane Protein Serial Crystallography. Structure 25:1461-1468.e2
de Vries, Robert P; Tzarum, Netanel; Peng, Wenjie et al. (2017) A single mutation in Taiwanese H6N1 influenza hemagglutinin switches binding to human-type receptors. EMBO Mol Med 9:1314-1325

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