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Calmodulin-Binding Proteins: Proteins which bind calmodulin. They are found in many tissues and have a variety of functions including F-actin cross-linking properties, inhibition of cyclic nucleotide phosphodiesterase and calcium and magnesium ATPases.

Real-time In Vivo Recording of Arabidopsis Calcium Signals During Insect Feeding Using a Fluorescent Biosensor

1Department of Metabolic Biology, John Innes Centre, Norwich Research Park, 2Department of Botany, University of Wisconsin, Madison, 3Department of Biochemistry and Molecular Biology, Saitama University, 4Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency (JST), 5Department of Cell and Developmental Biology, John Innes Centre, Norwich Research Park

JoVE 56142


 Biology

Measuring Spatial and Temporal Ca2+ Signals in Arabidopsis Plants

1Department of Horticulture and Landscape Architecture, Purdue University, 2Bindley Bioscience Center, Purdue University, 3Institute of Biotechnology, Jiangsu Academy of Agricultural Sciences, 4College of Environmental & Resource Science, Zhejiang University, 5Dryland Agriculture Research Centre, Shanxi Academy of Agricultural Sciences, 6Shanghai Center for Plant Stress Biology, Chinese Academy of Sciences

JoVE 51945


 Biology

Application of Genetically Encoded Fluorescent Nitric Oxide (NO•) Probes, the geNOps, for Real-time Imaging of NO• Signals in Single Cells

1Institute of Molecular Biology and Biochemistry, Medical University of Graz

JoVE 55486


 Biology

Open Source High Content Analysis Utilizing Automated Fluorescence Lifetime Imaging Microscopy

1Photonics Group, Department of Physics, Imperial College London, 2Institute for Chemical Biology, Department of Chemistry, Imperial College London, 3MRC Clinical Sciences Centre, Hammersmith Hospital, 4Chemical Biology Section, Department of Chemistry, Imperial College London, 5Retroscreen Virology Ltd, 6Pfizer Global Research and Development, Pfizer Limited, Sandwich, Kent, UK, 7Centre for Histopathology, Imperial College London

JoVE 55119


 Biology

Co-Immunoprecipitation and Pull-Down Assays

JoVE 5695

Co-immunoprecipitation (CoIP) and pull-down assays are closely related methods to identify stable protein-protein interactions. These methods are related to immunoprecipitation, a method for separating a target protein bound to an antibody from unbound proteins. In CoIP, an antibody-bound protein is itself bound to another protein that does not bind with the antibody, this is followed by a separation process that preserves the protein-protein complex. The difference in pull-down assays is that affinity-tagged bait proteins replace antibodies, and affinity chromatography is used to isolate protein-protein complexes. This video explains CoIP, pull-down assays, and their implementation in the laboratory. A step-by-step protocol for each technique is covered, including the reagents, apparatus, and instruments used to purify and analyze bound proteins. Additionally, the applications section of this video describes a procedure to study how myxovirus proteins inhibit influenza nucleoprotein, an investigation into the role of calcium ions in calmodulin via a pull-down assay, and a modified pull-down assay for characterizing transient protein interactions. Protein-protein interactions play a significant role in a wide variety of biological functions. The majority of protein-protein interactions and their biological effects h


 Biochemistry

Proteomics to Identify Proteins Interacting with P2X2 Ligand-Gated Cation Channels

1Department of Physiology, David Geffen School of Medicine, University of California, Los Angeles, 2Department of Anesthesiology, David Geffen School of Medicine, University of California, Los Angeles, 3Department of Anesthesiology, Medicine and Physiology, David Geffen School of Medicine, University of California, Los Angeles

JoVE 1178


 Biology

Drosophila Courtship Conditioning As a Measure of Learning and Memory

1Department of Human Genetics, Radboud University Medical Center, 2Radboud Institute of Molecular Life Sciences, Radboud University, 3Donders Institute for Brain, Cognition, and Behaviour, Centre for Neuroscience, Radboud University, 4Research Institute of Molecular Pathology, Vienna, Austria, 5Department for Health Evidence, Radboud University Medical Center, 6Janelia Research Campus, Howard Hughes Medical Institute, 7Department of Physiology and Pharmacology, Schulich School of Medicine and Dentistry, Western University, 8Department of Biology, Faculty of Science, Western University

JoVE 55808


 Neuroscience

Overexpression and Purification of Human Cis-prenyltransferase in Escherichia coli

1Sackler Faculty of Medicine, Tel Aviv University, 2Department of Physiology and Pharmacology, Sackler Faculty of Medicine, Tel Aviv University, 3Department of Ophthalmology, Tel Aviv Sourasky Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University, 4Tel Aviv Sourasky Medical Center, affiliated to the Sackler Faculty of Medicine, Tel Aviv University

JoVE 56430


 Immunology and Infection

Dissection of Hippocampal Dentate Gyrus from Adult Mouse

1Japan Science and Technology Agency, Core Research for Evolutionary Science and Technology (CREST), 2Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, 3Department of Psychiatry, Graduate School of Medicine, Kyoto University, 4Genetic Engineering and Functional Genomics Group, Horizontal Medical Research Organization, Graduate School of Medicine, Kyoto University, 5Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, National Institutes of Natural Sciences

JoVE 1543


 Biology

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