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Ligand-Gated Ion Channels: A subclass of ion channels that open or close in response to the binding of specific Ligands.
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Coordination Chemistry Complexes

JoVE 10179

Source: Laboratory of Dr. Neal Abrams — SUNY College of Environmental Science and Forestry

Transition metals are found everywhere from vitamin supplements to electroplating baths. Transition metals also make up the pigments in many paints and compose all minerals. Typically, transition metals are found in the cationic form since they readily oxidize, or lose electrons, and are surrounded by electron donors called ligands. These ligands do not form ionic or covalent bonds with the metal center, rather they take on a third type of bond known as coordinate-covalent. The coordinate-covalent bond between a ligand and a metal is dynamic, meaning that ligands are continuously exchanging and re-coordinating around the metal center. The identities of both the metal and the ligand dictates which ligands will bond preferentially over another. In addition, color and magnetic properties are also due to the types of complexes that are formed. The coordination compounds that form are analyzed using a variety of instruments and tools. This experiment explores why so many complexes are possible and uses a spectrochemical (color and chemical) method to help identify the type of coordination complex that forms.


 General Chemistry

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Anatomically Inspired Three-dimensional Micro-tissue Engineered Neural Networks for Nervous System Reconstruction, Modulation, and Modeling

1Department of Bioengineering, School of Engineering and Applied Science, University of Pennsylvania, 2Center for Brain Injury & Repair, Department of Neurosurgery, Perelman School of Medicine, University of Pennsylvania, 3Center for Neurotrauma, Neurodegeneration & Restoration, Michael J. Crescenz Veterans Affairs Medical Center, 4School of Biomedical Engineering, Drexel University

JoVE 55609


 Neuroscience

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Molecular Orbital (MO) Theory

JoVE 10447

Source: Tamara M. Powers, Department of Chemistry, Texas A&M University

This protocol serves as a guide in the synthesis of two metal complexes featuring the ligand 1,1'-bis(diphenylphosphino)ferrocene (dppf): M(dppf)Cl2, where M = Ni or Pd. While both of these transition metal complexes are 4-coordinate, they exhibit different geometries at the metal center. Using molecular orbital (MO) theory in conjunction with 1H NMR and Evans method, we will determine the geometry of these two compounds.


 Inorganic Chemistry

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In Vivo Functional Brain Imaging Approach Based on Bioluminescent Calcium Indicator GFP-aequorin

1Equipe: Imagerie Cérébrale Fonctionnelle et Comportements (ICFC), Institut des Neurosciences Paris-Saclay (Nero-PSI), UMR-9197, CNRS/Université Paris Sud, 2Interdisciplinary Program in Neuroscience, Graduate College, University of Iowa, 3Department of Anesthesia, Carver College of Medicine, University of Iowa

JoVE 53705


 Neuroscience

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Measurement of T Cell Alloreactivity Using Imaging Flow Cytometry

1Division of Respirology, Departments of Medicine and Immunology, Toronto Lung Transplant Program, Multiorgan Transplant Program, Toronto General Research Institute, University of Toronto and University Health Network, 2Latner Thoracic Surgery Laboratories, Toronto General Research Institute, University Health Network, 3National Institutes of Health Research, Oxford Biomedical Research Centre, Translational Immunology Laboratory, NDORMS, Kennedy Institute of Rheumatology, University of Oxford, 4Transplantation Research Immunology Group, Nuffield Department of Surgical Sciences, John Radcliffe Hospital, University of Oxford

JoVE 55283


 Immunology and Infection

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A Simple Flow Cytometric Method to Measure Glucose Uptake and Glucose Transporter Expression for Monocyte Subpopulations in Whole Blood

1Centre for Biomedical Research, Macfarlane Burnet Institute for Medical Research and Public Health, 2Department of Infectious Diseases, Monash University, 3Department of Microbiology and Immunology, University of Melbourne, 4Department of Microbiology, The University of the West Indies, 5Division of Experimental Medicine, Department of Medicine, University of California, San Francisco, 6Department of Medicine, Monash University

JoVE 54255


 Immunology and Infection

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A Semi-automated Approach to Preparing Antibody Cocktails for Immunophenotypic Analysis of Human Peripheral Blood

1Human Immune Monitoring Laboratory, Earle A. Chiles Research Institute, Providence Cancer Center, Providence Portland Medical Center, 2Sony Biotechnology, 3Beckman Coulter, Inc. Life Sciences, 4Bristol-Myers Squibb

JoVE 53485


 Immunology and Infection

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Optogenetic Stimulation of the Auditory Nerve

1InnerEarLab, Department of Otolaryngology, University Medical Center Goettingen, 2Bernstein Focus for Neurotechnology, University of Goettingen, 3Auditory Systems Physiology Group, Department of Otolaryngology, University Medical Center Goettingen, 4Center for Nanoscale Microscopy and Molecular Physiology of the Brain, University of Goettingen, 5Department of Chemical, Electronic, and Biomedical Engineering, University of Guanajuato

JoVE 52069


 Neuroscience

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Whole-cell Patch-clamp Recordings of Isolated Primary Epithelial Cells from the Epididymis

1School of Life Science and Technology, ShanghaiTech University, 2Institute of Biochemistry and Cell Biology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, 3University of Chinese Academy of Sciences, 4Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University

JoVE 55700


 Developmental Biology

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Light-mediated Reversible Modulation of the Mitogen-activated Protein Kinase Pathway during Cell Differentiation and Xenopus Embryonic Development

1Department of Biochemistry, University of Illinois at Urbana-Champaign, 2Department of Comparative Biosciences, University of Illinois at Urbana-Champaign, 3Neuroscience Program, University of Illinois at Urbana-Champaign, 4Center for Biophysics and Quantitative Biology, University of Illinois at Urbana-Champaign

JoVE 55823


 Developmental Biology

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Structure Of Ferrocene

JoVE 10347

Source: Tamara M. Powers, Department of Chemistry, Texas A&M University 

In 1951, Kealy and Pauson reported to Nature the synthesis of a new organometallic compound, ferrocene.1 In their original report, Pauson suggested a structure for ferrocene in which the iron is singly bonded (sigma bonds) to one carbon atom of each cyclopentadiene ligand (Figure 1, Structure I).1,2,3 This initial report led to wide-spread interest in the structure of ferrocene, and many leading scientists participated in the structure elucidation of this interesting new molecule. Wilkinson and Woodward were quick to suggest an alternative formulization where the iron is "sandwiched" between two cyclopentadiene ligands, with equal binding to all 10 carbon atoms (Figure 1, Structure II).4 Here, we will synthesize ferrocene and decide, based on experimental data (IR and 1H NMR), which of these structures is observed. In addition, we will study the electrochemistry of ferrocene by collecting a cyclic voltammogram. In the course of this experiment, we introduce the 18-electron rule and discuss valence electron counting for transitio


 Inorganic Chemistry

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Long-term High-Resolution Intravital Microscopy in the Lung with a Vacuum Stabilized Imaging Window

1Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, 2Department of Obstetrics/Gynecology and Woman’s Health, Albert Einstein College of Medicine, 3Department of Anatomy & Structural Biology, Albert Einstein College of Medicine, 4Gruss-Lipper Biophotonics Center Integrated Imaging Program, Albert Einstein College of Medicine, 5Medical Research Council Centre for Reproductive Health, Queen’s Medical Research Institute, University of Edinburgh

JoVE 54603


 Cancer Research

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Construction of Defined Human Engineered Cardiac Tissues to Study Mechanisms of Cardiac Cell Therapy

1Cardiovascular Research Center, Icahn School of Medicine at Mount Sinai, 2The Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, 3Stem Cell & Regenerative Medicine Consortium, LKS Faculty of Medicine, University of Hong Kong

JoVE 53447


 Bioengineering

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