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Electrophoresis, Polyacrylamide Gel: Electrophoresis in which a polyacrylamide gel is used as the diffusion medium.
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 JoVE Neuroscience

Consensus Brain-derived Protein, Extraction Protocol for the Study of Human and Murine Brain Proteome Using Both 2D-DIGE and Mini 2DE Immunoblotting

1Team Alzheimer & Tauopathies, Jean-Pierre Aubert Research Centre, Inserm UMR 837, 2EA 4308-Department of Reproductive Biology-Spermiology-CECOS, CHRU-Lille, 3EA2686-Laboratorie d'Immunologie, Faculté de Médecine - Pôle Recherche, 4Department of Neurology, CHRU-Lille


JoVE 51339

A common protein extraction protocol using urea/thiourea/SDS buffer for human and mice brain tissue allows indentification of proteins by 2D-DIGE and their subsequent characterization by mini 2DE immunoblotting. This method enables one to obtain more reproducible and reliable results from human biopsies and experimental models.

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 JoVE Immunology and Infection

Total Protein Extraction and 2-D Gel Electrophoresis Methods for Burkholderia Species

1Department of Pediatrics, Centre for Understanding and Preventing Infection in Children, University of British Columbia


JoVE 50730

Members of the Burkholderia genus are pathogens of clinical importance. We describe a method for total bacterial protein extraction, using mechanical disruption, and 2-D gel electrophoresis for subsequent proteomic analysis.

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 JoVE Application Notes

Simultaneous, Rapid, and Highly Efficient Protein Transfer Using the Trans-Blot Turbo Transfer System - ADVERTISEMENT

1Bio-Rad Laboratories


JoVE 3158

The Trans-Blot Turbo system reduces protein transfer protocols from gels to as little as 3 minutes, while maintaining high efficiency transfers and high throughput. The system enables protein transfer of 2 mini gels in 3 minutes and up to 4 mini gels in as little as 7 minutes.

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 JoVE Biology

RNA Secondary Structure Prediction Using High-throughput SHAPE

1RT Biochemistry Section, HIV Drug Resistance Program, Frederick National Laboratory for Cancer Research


JoVE 50243

High-throughput selective 2' hydroxyl acylation analyzed by primer extension (SHAPE) utilizes a novel chemical probing technology, reverse transcription, capillary electrophoresis and secondary structure prediction software to determine the structures of RNAs from several hundred to several thousand nucleotides at single nucleotide resolution.

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 JoVE Neuroscience

Selection of Aptamers for Amyloid β-Protein, the Causative Agent of Alzheimer's Disease

1Department of Neurology, David Geffen School of Medicine, 2Molecular Biology Institute, University of California, Los Angeles, 3Brain Research Institute, University of California, Los Angeles


JoVE 1955

Aptamers are short ribo-/deoxyribo-oligonucleotides selected by in-vitro evolution methods based on affinity for a specific target. Aptamers are molecular recognition tools with versatile therapeutic, diagnostic, and research applications. We demonstrate methods for selection of aptamers for amyloid β-protein, the causative agent of Alzheimer's disease.

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 JoVE Chemistry

Steady-state, Pre-steady-state, and Single-turnover Kinetic Measurement for DNA Glycosylase Activity

1Laboratory of Structural Biology, NIEHS, National Institutes of Health


JoVE 50695

Time courses for the glycosylase activity of 8-oxoguanine DNA glycosylase are biphasic exhibiting a burst of product formation and a linear steady-state phase. Utilizing quench-flow techniques, the burst and the steady-state rates can be measured, which correspond to excision of 8-oxoguanine and release of the glycosylase from the product DNA, respectively.

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 JoVE Immunology and Infection

Monitoring Activation of the Antiviral Pattern Recognition Receptors RIG-I And PKR By Limited Protease Digestion and Native PAGE

1Institute for Virology, Philipps-University Marburg


JoVE 51415

Innate defenses to virus infections are triggered by pattern recognition receptors (PRRs). The two cytoplasmic PRRs RIG-I and PKR bind to viral signature RNAs, change conformation, oligomerize, and activate antiviral signaling. Methods are described which allow to conveniently monitor the conformational switching and the oligomerization of these cytoplasmic PRRs.

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 JoVE Biology

Analysis of RNA Processing Reactions Using Cell Free Systems: 3' End Cleavage of Pre-mRNA Substrates in vitro

1Department of Infectious Diseases, The Scripps Research Institute, 2Department of Chemistry, City College of New York


JoVE 51309

RNA polymerase II synthesizes a precursor RNA that extends beyond the 3' end of the mature mRNA. The end of the mature RNA is generated cotranscriptionally, at a site dictated by RNA sequences, via the endonuclease activity of the cleavage complex. Here, we detail the method to study cleavage reactions in vitro.

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 JoVE Biology

The Fastest Western in Town: A Contemporary Twist on the Classic Western Blot Analysis

1Diller Cancer Research Building, University of California, San Francisco


JoVE 51149

This protocol explores the latest advancements in performing Western blot analyses. These novel modifications employ a Bis-Tris gel system with a 35 min electrophoresis run time, a 7 min dry blotting transfer system, and infrared fluorescent protein detection and imaging that generates higher resolution, quality, sensitivity, and improved accuracy of Western data.

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 JoVE Biology

Isolation of Translating Ribosomes Containing Peptidyl-tRNAs for Functional and Structural Analyses

1Department of Biological Sciences, University of Alabama Huntsville, 2Department of Biology, Stanford University


JoVE 2498

A major impediment to biochemical analyses of ribosomes containing nascent peptidyl-tRNAs has been the presence of other ribosomes in the same samples, ribosomes not involved in the translation of the specific mRNA sequence being analyzed. We developed a simple methodology to purify, exclusively, the ribosomes containing the nascent peptidyl-tRNA of interest.

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