Mary Elting

Principal Investigator
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mary.eltingobfuscate@ncsu.edu

The broad question that drives my research is how biological function emerges from structure and mechanics. A native North Carolinian, I was an undergraduate in the NC State Physics Department when my interest in the intersection of physics and biology was first sparked in the Weninger Lab. I then completed my PhD in Applied Physics at Stanford University, where, in the Spudich Lab, I modularly engineered myosin molecular motors to explain how molecular structure leads to mechanical function. After graduate school, I developed an interest in how biological macromolecules self-organize to generate force at the cellular, rather than molecular, length-scale. I joined the Dumont Lab at the University of California, San Francisco, where I probed physical forces present during cell division and their molecular basis by developing mechanical assays in live cells to target the architecture of the mitotic spindle, the machine that segregates chromosomes when cells divide.

I was thrilled to return to my alma mater in Fall 2017 as an Assistant Professor in the Department of Physics at NCSU. In my lab, we ask how molecular-scale cytoskeletal architectures self-organize to produce the cellular-scale function of the mitotic spindle. Our approach uses mechanical and molecular perturbations inside live mammalian and fission yeast cells to probe how microtubule architectures in cell division machinery generate force.

I’m also a member of the Quantitative and Computational Developmental Biology cluster. Collaboration and interdisciplinarity has always been central to my approach to science. I’m excited for my lab to take this opportunity to begin applying our tools to understanding how biological force scales not only from the molecular to the cellular level, but also between cells and across tissues.

Papers

A unified model for the dynamics of ATP-independent ultrafast contraction

Mitotic spindle: augmin-based bridges keep kinetochores in line

Pushing the envelope: force balance in fission yeast closed mitosis

A unified model for the dynamics of ATP-independent ultrafast contraction

Laser ablation reveals the impact of Cdc15p on the stiffness of the contractile ring

Force by minus-end motors Dhc1 and Klp2 collapses the S. pombe spindle after laser ablation

K-fiber bundles in the mitotic spindle are mechanically reinforced by Kif15

Viscoelastic Relaxation of the Nuclear Envelope Does Not Cause the Collapse of the Spindle After Ablation in S. pombe

Automated tracking of S. pombe spindle elongation dynamics

Cytoskeletal biophysics: Passive crosslinker adapts to keep microtubule bundles on track

The collapse of the spindle following ablation in S. pombe is mediated by microtubules and the motor protein dynein

Automated tracking of S. pombe spindle elongation dynamics

K-fiber bundles in the mitotic spindle are mechanically reinforced by Kif15

Knitting Ripples

The Spindle: Integrating Architecture and Mechanics across Scales

Mapping Load-Bearing in the Mammalian Spindle Reveals Local Kinetochore Fiber Anchorage that Provides Mechanical Isolation and Redundancy

The chromokinesin Klp3a and microtubules facilitate acentric chromosome segregation

Force on spindle microtubule minus ends moves chromosomes

Single-molecule fluorescence imaging of processive myosin with enhanced background suppression using linear zero-mode waveguides (ZMWs) and convex lens induced confinement (CLIC)

Future challenges in single-molecule fluorescence and laser trap approaches to studies of molecular motors

Detailed tuning of structure and intramolecular communication are dispensable for processive motion of myosin VI

Engineered myosin VI motors reveal minimal structural determinants of directionality and processivity

Rapid Membrane Fusion of Individual Virus Particles with Supported Lipid Bilayers