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Receptors, Adrenergic: Cell-surface proteins that bind epinephrine and/or norepinephrine with high affinity and trigger intracellular changes. The two major classes of adrenergic receptors, alpha and beta, were originally discriminated based on their cellular actions but now are distinguished by their relative affinity for characteristic synthetic ligands. Adrenergic receptors may also be classified according to the subtypes of G-proteins with which they bind; this scheme does not respect the alpha-beta distinction.

Measuring G-protein-coupled Receptor Signaling via Radio-labeled GTP Binding

1The Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, 2Department of Neurology and neurosurgery, Johns Hopkins University School of Medicine, 3Departments of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, 4Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine

JoVE 55561


 Biochemistry

Live-cell Measurement of Odorant Receptor Activation Using a Real-time cAMP Assay

1Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education, Shanghai Jiao Tong University School of Medicine, 2Department of Molecular Genetics and Microbiology, Duke University Medical Center, 3Department of Neurobiology, Duke Institute for Brain Sciences, Duke University Medical Center, 4Institute of Health Science, Chinese Academy of Science/Shanghai Jiao Tong University School of Medicine

Video Coming Soon

JoVE 55831


 JoVE In-Press

Evaluation of Vascular Control Mechanisms Utilizing Video Microscopy of Isolated Resistance Arteries of Rats

1Department of Physical Therapy, Marquette University, 2Medical College of Wisconsin, 3Department of Physiology, Medical College of Wisconsin, 4Graduate Programs of Nurse Anesthesia, Texas Wesleyan University, 5Office of Research, MCW, Medical College of Wisconsin

Video Coming Soon

JoVE 56133


 JoVE In-Press

Intravital Microscopy for Imaging Subcellular Structures in Live Mice Expressing Fluorescent Proteins

1Intracellular Membrane Trafficking Unit, Oral and Pharyngeal Cancer Branch National Institute of Dental and Craniofacial Research, National Institutes of Health, 2Department of Biology, University of North Carolina at Chapel Hill, 3Department of Chemical & Biochemical Engineering and Department of Biomedical Engineering, Rutgers University

JoVE 50558


 Biology

Assessing Changes in Volatile General Anesthetic Sensitivity of Mice after Local or Systemic Pharmacological Intervention

1Department of Anesthesiology and Critical Care, Perelman School of Medicine, University of Pennsylvania, 2Department of Pharmacology, Perelman School of Medicine, University of Pennsylvania, 3Department of Neuroscience, Perelman School of Medicine, University of Pennsylvania, 4Center for Sleep and Circadian Neurobiology, Perelman School of Medicine, University of Pennsylvania

JoVE 51079


 Medicine

Combining Intravital Fluorescent Microscopy (IVFM) with Genetic Models to Study Engraftment Dynamics of Hematopoietic Cells to Bone Marrow Niches

1Wells Center for Pediatric Research, Department of Pediatrics, Indiana University School of Medicine, 2Indiana Center for Biological Microscopy, Department of Medicine, Indiana University School of Medicine, 3Department of Pediatrics, Indiana University School of Medicine

JoVE 54253


 Developmental Biology

The Use of Cystometry in Small Rodents: A Study of Bladder Chemosensation

1Laboratory of Experimental Urology, Department of Development and Regeneration, KU Leuven, Belgium, 2Laboratory for Ion Channel Research, Department of Cellular and Molecular Medicine, KU Leuven, Belgium, 3TRP Research Platform Leuven (TRPLe), KU Leuven, Belgium

JoVE 3869


 Medicine

Instrumentation of Near-term Fetal Sheep for Multivariate Chronic Non-anesthetized Recordings

1Département de sciences cliniques, CHUV, Université de Montréal, St-Hyacinthe, QC, 2Département d'obstetriques et de gynécologie, CHU Ste-Justine Research Centre, Université de Montréal, 3Département de neurosciences, CHU Ste-Justine Centre de recherche, Université de Montréal, 4Centre de recherche en reproduction animale (CRRA), Université de Montréal, St-Hyacinthe, QC

JoVE 52581


 Developmental Biology

Mesenteric Artery Contraction and Relaxation Studies Using Automated Wire Myography

1Julius L. Chambers Biomedical/Biotechnology Research Institute, North Carolina Central University, Durham, 2Department of Biology, North Carolina Central University, Durham, 3Department of Physiology & Pharmacology and Hypertension & Vascular Research Center, Wake Forest University School of Medicine

JoVE 3119


 Medicine

Protein Crystallization

JoVE 5689

Protein crystallization, obtaining a solid lattice of biomolecules, elucidates protein structure and enables the study of protein function. Crystallization involves drying purified protein under a combination of many factors, including pH, temperature, ionic strength, and protein concentration. Once crystals are obtained, the protein structure can be elucidated by x-ray diffraction and computation of an electron density model. This video introduces protein crystallization and shows a general procedure. Protein expression and purification, crystallization, and x-ray diffraction are covered in the procedure. Applications of protein crystallization include in silico drug design, binding site determination, and membrane protein structure analysis. Protein crystallization is the process of obtaining a latticed solid form of a protein. These crystals are especially valuable to structural biologists, assisting in the study of protein function. Other techniques, such as mass spec or SDS-PAGE, can only provide information on the one-dimensional structure of proteins. Protein crystallization is complemented by the techniques of recombinant protein expression and x-ray diffraction. This video will show the principles of protein crystallization, a general laboratory procedure, and several of its applications in the


 Biochemistry

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