Properties, Structure, and Composition of Biological Systems

What are the building blocks of biological systems? What are their properties and how are they organized? Researchers studying biomaterial properties and composition use methods from physics, chemistry, and biochemistry to understand the molecular composition and biophysical properties of biologically derived materials. Labs studying cellular structure and dynamics investigate how these molecular building blocks come together to create the inter and intracellular structures, how these structures are dynamically maintained, and what role they play in fundamental biological processes. Scientists studying mechanobiology seek to understand how mechanical forces are integrated into biological systems from single molecules to cells and tissues. 

Featured Research

The biochemical and biophysical structure of ctenophore mesoglea

Sara Siwiecki ‘25

she/her

Molecular Biophysics and Biochemistry (Sweeney Lab)

Left: Sara on a boat collecting samples; Right: two species of ctenophora located in the Long Island Sound

F-actin architecture governs self-organized criticality in the cytoskeleton

Zachary Gao Sun ‘25

he/him

Physics (Murrell Lab)

Left: Zachary in the lab; Right: Fluorescence image of in vitro actin filaments

Understanding endothelial blood flow direction sensing

Shaka X ‘26

he/him

Biomedical Engineering (Schwartz Lab)

Left: Shaka in the lab; Right: Fluorescence imaging of actin filaments in cells under shear stress

Faculty

  • Shirin Bahmanyar

    Associate Professor; Molecular, Cellular & Developmental Biology
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Nuclear dynamics during cell division and organismal development, mechanisms that divide organelle structure, defining functions of inner nuclear membrane proteins in the organization of single cells and complex tissues
  • Julien Berro

    Associate Professor: Molecular Biophysics & Biochemistry and Cell Biology
    • Imaging Biological Systems
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Actin and cytoskeleton; clatherin mediated endocytosis; mathematical modeling combined with experiment; imaging
  • Caitlin Davis

    Assistant Professor; Chemistry
    • Imaging Biological Systems
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Using time-resolved spectral imaging at multiple scales, from in vitro to single cell to whole organism, to make connections between molecular mechanisms and cellular function
  • Enrique de la Cruz

    Professor; Molecular Biophysics & Biochemistry
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Molecular motors, cytoskeleton, polymer mechanics
  • Allison Didychuk

    Assistant Professor; Molecular Biophysics and Biochemistry
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Herpesvirus transcription and viral genome packaging
  • Rong Fan

    Professor; Biomedical Engineering
    • Bioinformatics
    • Biological Circuits
    • Properties, Structure, Composition of Biological Systems
    • +1 more
    Research Interests: Combining single-cell analysis technology and systems biology to study cell-cell communication and cellular heterogeneity in human cancers and the immune system
  • Paul Forscher

    Professor; Molecular, Cellular & Developmental Biology
    • Imaging Biological Systems
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Actin assembly; cytoskeletal protein dynamics; cellular motion; microscopy
  • Scott Holley

    Professor; Molecular, Cellular & Developmental Biology
    • Bioinformatics
    • Biological Circuits
    • Computational Biology
    • +3 more
    Research Interests: The systems biology, biomechanics and molecular biophysics of early spinal column development
  • Valerie Horsley

    Associate Professor: Molecular, Cellular & Developmental Biology and Dermatology
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Stem cells; wound healing; cellular mechanics
  • Joe Howard

    Professor; Molecular Biophysics & Biochemistry and Physics
    • Computational Biology
    • Imaging Biological Systems
    • Neuroscience
    • +2 more
    Research Interests: Microtubules and molecular motors. Branching morphogenesis of neurons. Motility of cilia and flagella. Nerve nets.
  • Jay Humphrey

    Professor; Biomedical Engineering
    • Bioengineering
    • Computational Biology
    • Properties, Structure, Composition of Biological Systems
    Research Interests: ascular mechanics; mechanobiology; design of tissue engineering constructs; computational modeling of vascular development, homeostasis, and disease
  • Erdem Karatekin

    Associate Professor; Cellular & Molecular Physiology and Molecular Biophysics & Biochemistry
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Membrane fusion and fission mechanisms, Cell membrane dynamics, Membrane trafficking, Optical tweezers, imaging, Electrophysiology
  • Megan King

    Associate Professor; Cell Biology and Molecular, Cellular & Development Biology
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Nuclear mechanics; DNA repair; chromatin, nuclear envelope and cytoskeletal interconnectedness and structure
  • Aaron Kuan

    Assistant Professor; Neuroscience and Biomedical Engineering
    • Bioinformatics
    • Biological Circuits
    • Computational Biology
    • +2 more
    Research Interests: Electron microscopy and X-ray imaging techniques to enable 3D imaging of neuronal circuits combined with behavior and functional imaging to reveal how circuit connectivity underlies brain activity and cognition.
  • Chenxiang Lin

    Associate Professor; Cell Biology and Biomedical Engineering
    • Bioengineering
    • Properties, Structure, Composition of Biological Systems
    Research Interests: DNA nanotechnology enabled molecular tools and biomimetic systems
  • Yimin Luo

    Assistant Professor; Mechanical Engineering & Materials Science
    • Imaging Biological Systems
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Regulated cell alignment and tissue organization are vital in health and disease. To systematically investigate how cells respond to patterns, we achieve precise control over their arrangement through molecularly defined scaffolds. We innovate a continuous imaging platform tracking thousands of cells over days. Leveraging reams of data, we develop a hybrid procedure that utilizes statistical learning approaches to extend the state-of-the-art physics models.
  • Michael Mak

    Assistant Professor; Biomedical Engineering
    • Computational Biology
    • Properties, Structure, Composition of Biological Systems
    • Systems Biology
    Research Interests: Multiscale mechanobiology in cancer and development, from molecular to multicellular levels, integrating microfluidics, wet-lab experiments, and computational approaches.
  • Nikhil Malvankar

    Associate Professor; Molecular Biophysics & Biochemistry
    • Bioengineering
    • Bioinformatics
    • Biological Circuits
    • +3 more
    Research Interests: We are developing electronic Imaging & Control of Microbial Functions, by studying how environmentally and clinically important microbes build & use hair-like “nanowires” to export electrons outside their cell body, during respiration, communication, and pathogenesis and by tuning nanowire conductivity using light, pressure, temperature, electromagnetic fields, and non-natural ‘click’ chemistry.
  • Simon Mochrie

    Professor; Physics and Applied Physics
    • Bioinformatics
    • Biological Circuits
    • Computational Biology
    • +2 more
    Research Interests: Quantitative microscopy and image analysis. Chromatin organization and dynamics. Nuclear envelope physics. Phase transitions of soft matter
  • Binyam Mogessie

    Assistant Professor; Molecular, Cellular & Developmental Biology and Obstetrics, Gynecology & Reproductive Sciences
    • Imaging Biological Systems
    • Properties, Structure, Composition of Biological Systems
    Research Interests: The Mogessie lab studies cytoskeletal organization and function with a special focus on chromosome segregation in mammalian eggs and the molecular origins of female reproductive aging and infertility.
  • Corey O'Hern

    Professor; Mechanical Engineering & Materials Science, Physics, Applied Physics and Graduate Program in Computational Biology & Bioinformatics
    • Computational Biology
    • Properties, Structure, Composition of Biological Systems
    • Systems Biology
    • +1 more
    Research Interests: Statistical mechanics of nonequilibrium systems; glass and jamming transitions in soft matter; computational biology; protein structure, interactions, and design.
  • Anna Marie Pyle

    Professor; Molecular, Cellular & Developmental Biology and Chemistry
    • Computational Biology
    • Properties, Structure, Composition of Biological Systems
    Research Interests: RNA remodeling enzymes; RNA tertiary structure; molecular virology; computational studies of RNA structure
  • Hesper Rego

    Associate Professor; Microbial Pathogenesis
    • Biological Circuits
    • Imaging Biological Systems
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Imaging (including building microscopes), single-cell level experiments, mycobacterial infections, drivers of heterogeneity
  • Xiaolei Su

    Assistant Professor; Cell Biology
    • Bioengineering
    • Biological Circuits
    • Imaging Biological Systems
    • +1 more
    Research Interests: Membranes, phase separation, and regulation of immune signaling; single molecule imaging and cell engineering
  • Alison Sweeney

    Associate Professor; Ecology and Evolutionary Biology and Physics
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Self-assembly and optical properties of molecular structures, biophysics, evolution of deep sea squid camouflage, combining theory with experiment
  • Madhusudhan Venkadesan

    Associate Professor; Mechanical Engineering & Materials Science
    • Bioengineering
    • Computational Biology
    • Properties, Structure, Composition of Biological Systems
    Research Interests: biomechanics and control of animal movement; muscle rheology and biophysics; inverse problems in elasticity and morphoelasticity.
  • Min Wu

    Associate Professor; Cell Biology
    • Biological Circuits
    • Computational Biology
    • Properties, Structure, Composition of Biological Systems
    • +1 more
    Research Interests: Single cell oscillations and travelling waves, membrane curvature, mitosis, cell size
  • Elsa Yan

    Professor; Chemistry
    • Biological Circuits
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Biomolecular interactions at interfaces; signal transduction across biomembranes; molecular mechanism of vision
  • Jing Yan

    Assistant Professor, Molecular, Cellular & Developmental Biology
    • Bioengineering
    • Biological Circuits
    • Computational Biology
    • +3 more
    Research Interests: Imaging and modeling the developmental process of bacterial communities, characterizing and understanding the soft matter properties of bacterial biofilms, designing new bioinspired materials and surfaces
  • Yongli Zhang

    Professor; Cell Biology
    • Properties, Structure, Composition of Biological Systems
    Research Interests: Folding and assembly of proteins involved in membrane fusion; chromatin remodelers and ATP dependent translocases; single-molecule biophysics; optical tweezers