Abstract

The studies supported by this grant are designed to increase the sophistication of our understanding of the mechanisms of cellular movements by analyzing the molecules involved. In 1980-81 we will characterize proteins from Acanthamoeba which promote and inhibit actin filament cross-linking. By direct electron microscopic observation we will study the mechanism of actin filament assembly by measuring rate constants for the steps in polymerization. Using electron microscopic crystallography we will determine the structure of the actin molecules to a resolution of about 1 nm.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
5R01GM026338-08
Application #
3273819
Study Section
Molecular Biology Study Section (MBY)
Project Start
1978-09-01
Project End
1987-08-31
Budget Start
1985-09-01
Budget End
1986-08-31
Support Year
8
Fiscal Year
1985
Total Cost
Indirect Cost

  Institution

Name
Johns Hopkins University
Department
Type
Schools of Medicine
DUNS #
045911138
City
Baltimore
State
MD
Country
United States
Zip Code
21218

  Publications

Espinoza-Sanchez, Sofia; Metskas, Lauren Ann; Chou, Steven Z et al. (2018) Conformational changes in Arp2/3 complex induced by ATP, WASp-VCA, and actin filaments. Proc Natl Acad Sci U S A 115:E8642-E8651
Arasada, Rajesh; Sayyad, Wasim A; Berro, Julien et al. (2018) High-speed superresolution imaging of the proteins in fission yeast clathrin-mediated endocytic actin patches. Mol Biol Cell 29:295-303
Aydin, Fikret; Courtemanche, Naomi; Pollard, Thomas D et al. (2018) Gating mechanisms during actin filament elongation by formins. Elife 7:
Friend, Janice E; Sayyad, Wasim A; Arasada, Rajesh et al. (2018) Fission yeast Myo2: Molecular organization and diffusion in the cytoplasm. Cytoskeleton (Hoboken) 75:164-173
Fujiwara, Ikuko; Zweifel, Mark E; Courtemanche, Naomi et al. (2018) Latrunculin A Accelerates Actin Filament Depolymerization in Addition to Sequestering Actin Monomers. Curr Biol 28:3183-3192.e2
Akamatsu, Matthew; Lin, Yu; Bewersdorf, Joerg et al. (2017) Analysis of interphase node proteins in fission yeast by quantitative and superresolution fluorescence microscopy. Mol Biol Cell 28:3203-3214
Pollard, Thomas D (2017) Nine unanswered questions about cytokinesis. J Cell Biol 216:3007-3016
Pollard, Thomas D (2017) What We Know and Do Not Know About Actin. Handb Exp Pharmacol 235:331-347
Courtemanche, Naomi; Pollard, Thomas D; Chen, Qian (2016) Avoiding artefacts when counting polymerized actin in live cells with LifeAct fused to fluorescent proteins. Nat Cell Biol 18:676-83
Pollard, Thomas D (2016) Actin and Actin-Binding Proteins. Cold Spring Harb Perspect Biol 8:

Showing the most recent 10 out of 142 publications