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The Hirsch Lab @ Tel Aviv University
Methods and techniques employed
We use a wide variety of experimental and computational approaches to our address our scientific questions. These include:
X-ray crystallographyDeveloped over the last century, this technique has allowed us to obtain the 3D structure of proteins and nucleic acids at atomic resolution. | Circular dichroism spectroscopyThis solution technique provides information about protein secondary structure. | Voltage-clamp electrophysiologyWe use 2-electrode voltage-clamp methods to measure the functional biophysical properties of ion channels using recombinant DNA technology in frog oocytes. |
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Fluorescence spectroscopyWe use this versatile method for both understanding the structure and function of the proteins we study. Specific approaches include emission, quenching, anisotropy, resonance energy transfer, and time-resolved studies. | CalorimetryIsothermal titration calorimetry enables us to measure the thermodynamic parameters of molecular interactions like the affinity constant, delta G, enthalpy and entropy. | Small angle X-ray scatteringThis solution technique allows us to obtain low-resolution structural information including insight into molecular motion. |
Analytical ultracentrifugationThis solution method allows us to characterise the mass and shape of our macromolecular samples. | Recombinant DNA technologyMolecular biology techniques are used extensively to engineer protein molecules and recombinantly express them in a variety of cell types including bacteria, yeast, and insect cells. | Light scatteringThis physical technique allows one to measure absolute molecular mass based on the multi-angle light scattering of the particles, in our case protein complexes. |
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