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Showing 21-36 of 36 Resources
  • Structure of Dengue Virus

    Structure of Dengue Virus

    Animation

    (1 min 3 sec) The dengue virus's outer envelope proteins form symmetrical units and overlay the lipid envelope, capsid, and the RNA genome.

  • Biodiversity at a Snail's Pace

    Biodiversity at a Snail's Pace

    Lecture

    (58 min 29 sec) Cone snails have evolved many different toxins for different uses. Total molecular biodiversity may number in the millions.

  • PPAR-delta Activation in the Muscle Cell

    PPAR-delta Activation in the Muscle Cell

    Animation

    (1 min 45 sec) The PPAR-delta receptor activates certain genes in a muscle cell, resulting in the burning of fat.

  • PPAR-gamma Activation in the Fat Cell

    PPAR-gamma Activation in the Fat Cell

    Animation

    (2 min 49 sec) The PPAR-gamma receptor activates certain genes in a fat cell, resulting in the storage of fat and changes in hormone levels.

  • The Proteasome and Protein Regulation

    The Proteasome and Protein Regulation

    Click & Learn

    Learn about the structure and function of this fascinating cellular machine.

  • A Healthy Nervous System: A Delicate Balance

    A Healthy Nervous System: A Delicate Balance

    Lecture

    (58 min 32 sec) Mutations in key genes can lay waste to the nervous system. By studying large families predisposed to developing these genetic disorders, scientists can identify the responsible altered gene.

  • Gleevec

    Gleevec

    Animation

    (1 min 4 sec) Gleevec is a drug designed to interfere with the stimulation of growth in leukemia cells. This 3D animation shows how this is achieved.

  • Triplet code

    Triplet code

    Animation

    (1 min 8 sec) Once the structure of DNA was discovered, the next challenge was determining how the sequence of letters coded for the 20 amino acids. In theory, one or two letters can only code for 4 or 16 amino acids, respectively. A scheme using three letters, a triplet code, is the minimum necessary to encode for all the amino acids.

  • DNA packaging

    DNA packaging

    Animation

    (1 min 44 sec) DNA is tightly packed in the nucleus of every cell. DNA wraps around special proteins called histones, which form loops of DNA called nucleosomes. These nucleosomes coil and stack together to form fibers called chromatin. Chromatin in turn forms larger loops and coils to form chromosomes.

  • CML and Gleevec

    CML and Gleevec

    Animation

    (41 sec) Chronic myeloid leukemia (CML) is caused by a mutation that leads to an abnormal protein that is always active. The drug Gleevec has a shape that fits into the active site of the abnormal protein and stops its harmful effects.

  • The Proteasome

    The Proteasome

    Animation

    (1 min 44 sec) A 3D animation showing how proteins in the cell are tagged for disposal and degraded by the proteasome.

  • Chemical Genomics: New Tools for Medicine

    Chemical Genomics: New Tools for Medicine

    Lecture

    (58 min 29 sec) Scientists now have the ability to create millions of new molecules. How do they test whether any of these molecules are useful?

  • Probing Genes and Genomes

    Probing Genes and Genomes

    Lecture

    (58 min) To understand life's processes, perturb them. How a process responds to an insult can provide clues about normal function or mimic a specific disease state.

  • Myosin II Mechanism

    Myosin II Mechanism

    Animation

    (57 sec) Myosin II is one of the molecules involved in furrow formation in dividing cells. This animation shows how the molecule operates, and how furrowstatin blocks the mechanism and halts division of a cell.

  • Rapamycin

    Rapamycin

    Animation

    (1 min 10 sec) Rapamycin is a small molecule originally isolated from nature. It has antibiotic and immunosuppressive properties. It also allows two proteins which do not normally interact to bind together in the cell, which causes problems in the nutrient-sensing pathway.

  • Using Small Molecules to Modulate a Protein

    Using Small Molecules to Modulate a Protein

    Animation

    This animation illustrates how a small molecule binds to a protein. As a result of the binding, the protein alters its shape and becomes inactivated.

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