Biophysics

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    Protocols in Current Issue
    Dynamic and Sequential Protein Reconstitution on Negatively Curved Membranes by Giant Vesicles Fusion
    [Abstract] In vitro investigation of the interaction between proteins and positively curved membranes can be performed using a classic nanotube pulling method. However, characterizing protein interaction with negatively curved membranes still represents a formidable challenge. Here, we describe our recently developed approach based on ...
    Detection of Ligand-binding to Membrane Proteins by Capacitance Measurements
    Authors:  Verena Burtscher, Matej Hotka and Walter Sandtner, date: 01/05/2019, view: 1417, Q&A: 0
    [Abstract] In multi-cellular organisms, cells communicate with each other utilizing chemical messengers. For many of these messenger molecules, the membrane is an insurmountable barrier. Yet, they act by binding to surface proteins often triggering a cascade of reactions inside the cell. Accordingly, studying ligand-receptor interactions at the cellular ...
    Preparation of Silk Fibroin Nanoparticles and Enzyme-Entrapped Silk Fibroin Nanoparticles
    Author:  Yu-Qing Zhang, date: 12/20/2018, view: 1826, Q&A: 0
    [Abstract] After silk fiber is degummed in boiling 0.2% Na2CO3 solution, the degummed fibroin fiber could be dissolved in highly concentrated neutral salts such as CaCl2. The partially degraded polypeptides of silk fibroin, commonly called as regenerated liquid silk, could be obtained via water dialysis. The silk fibroin ...
    Microtitre Plate Based Cell-SELEX Method
    Authors:  Munish Shorie and Harmanjit Kaur, date: 10/20/2018, view: 1807, Q&A: 0
    [Abstract] Aptamers have emerged as a novel category in the field of bioreceptors due to their wide applications ranging from biosensing to therapeutics. Several variations of their screening process, called SELEX have been reported which can yield sequences with desired properties needed for their final use. We report a facile microtiter plate-based ...
    In vivo and in vitro 31P-NMR Study of the Phosphate Transport and Polyphosphate Metabolism in Hebeloma cylindrosporum in Response to Plant Roots Signals
    [Abstract] We used in vivo and in vitro phosphorus-31 nuclear magnetic resonance (31P-NMR) spectroscopy to follow the change in transport, compartmentation and metabolism of phosphate in the ectomycorrhizal fungus Hebeloma cylindrosporum in response to root signals originating from host (Pinus pinaster) or ...
    Magnetic Resonance Imaging and Histopathological Visualization of Human Dural Lymphatic Vessels
    Authors:  Seung-Kwon Ha, Govind Nair, Martina Absinta, Nicholas J. Luciano and Daniel S. Reich, date: 04/20/2018, view: 3010, Q&A: 1
    [Abstract] In this protocol, we describe a method to visualize and map dural lymphatic vessels in-vivo using magnetic resonance imaging (MRI) and ex-vivo using histopathological techniques. While MRI protocols for routine imaging of meningeal lymphatics include contrast-enhanced T2-FLAIR and T1-weighted black-blood imaging, a more specific ...
    Xenopus laevis Oocytes Preparation for in-Cell EPR Spectroscopy
    Authors:  Laura John and Malte Drescher, date: 04/05/2018, view: 2591, Q&A: 0
    [Abstract] One of the most exciting perspectives for studying bio-macromolecules comes from the emerging field of in-cell spectroscopy, which enables to determine the structure and dynamics of bio-macromolecules in the cell. In-cell electron paramagnetic resonance (EPR) spectroscopy in combination with micro-injection of bio-macromolecules into Xenopus ...
    Modification and Application of a Commercial Whole-body Plethysmograph to Monitor Respiratory Abnormalities in Neonatal Mice
    Authors:  Yen-Ting Lai and Yi-Shuian Huang, date: 06/20/2017, view: 4344, Q&A: 0
    [Abstract] Proper breathing is essential for mammals to acquire oxygen after birth and requires coordinated actions among several tissues, including diaphragm, intercostal muscles, trachea, bronchi, lung and respiration-regulating neurons located in the medulla oblongata. Genetically modified mice that die early postnatally may have respiratory defects ...



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