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Nucleic Acids: High molecular weight polymers containing a mixture of purine and pyrimidine nucleotides chained together by ribose or deoxyribose linkages.

Visual Detection of Multiple Nucleic Acids in a Capillary Array

1Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, 2State Key Laboratory of Oncogenes and Related Genes, 3School of Biomedical Engineering, Shanghai Jiao Tong University, 4Collaborative Innovation Center for Biosafety of GMOs, National Center for the Molecular Characterization of Genetically Modified Organisms, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, 5Key Laboratory of Crop Marker-Assisted Breeding of Huaian Municipality, Jiangsu Collaborative Innovation Center of Regional Modern Agriculture and Environmental Protection, 6Department of Biomedical Engineering, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, School of Medicine, Tsinghua University

JoVE 56597


 Bioengineering

Isolating Nucleic Acids from Yeast

JoVE 5096

One of the many advantages to using yeast as a model system is that large quantities of biomacromolecules, including nucleic acids (DNA and RNA), can be purified from the cultured cells.

This video will address the steps required to carry out nucleic acid extraction. We will begin by briefly outlining the growth and harvest, and lysis of yeast cells, which are the initial steps common to the isolation of all biomacromolecules. Next, we will discuss two unique purification methods for the separation of nucleic acids: column binding and phase separation. Additionally, we will demonstrate several ways in which these methods are applied in the laboratory, including the preparation of nucleic acids for molecular biology techniques such as PCR and southern blotting, quantification of gene expression in response to environmental stimuli, and purification of large amounts of recombinant proteins.


 Biology I

Preparation of Formalin-fixed Paraffin-embedded Tissue Cores for both RNA and DNA Extraction

1Department of Pathology & Molecular Medicine, Queen's University, 2Division of Cancer Biology & Genetics, Queen's Cancer Research Institute, Queen's University, 3Department of Surgery, Division of Urology, McGill University, 4Transformative Pathology Program, Ontario Institute for Cancer Research (OICR)

JoVE 54299


 Biology

Removal of Exogenous Materials from the Outer Portion of Frozen Cores to Investigate the Ancient Biological Communities Harbored Inside

1Biogeochemical Sciences Branch, Cold Regions Research and Engineering Laboratory, US Army Engineer Research & Development Center, Hanover, NH, 2Environmental Processes Branch, Environmental Laboratory, US Army Engineer Research & Development Center, Vicksburg, MS, 3Terrestrial and Cryospheric Scienes Branch, Cold Regions Research and Engineering Laboratory, US Army Engineer Research & Development Center, Hanover, NH, 4Biogeochemical Sciences Branch, Cold Regions Research and Engineering Laboratory, US Army Engineer Research & Development Center, Fairbanks, AK

JoVE 54091


 Biology

Single-molecule Manipulation of G-quadruplexes by Magnetic Tweezers

1School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, 2Mechanobiology Institute, National University of Singapore, 3Department of Physics, National University of Singapore, 4Research Institute for Biomimetics and Soft Matter, Fujian Provincial Key Lab for Soft Functional Materials Research, Department of Physics, Xiamen University, 5Center for Bioimaging Sciences, National University of Singapore

JoVE 56328


 Biochemistry

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