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Showing 1-15 of 15 Resources
  • Top Notch Model Organism

    Top Notch Model Organism

    Image of the Week

    Close-up of cells in a fruit fly eye at the pupal stage stained with antibodies to the Notch protein.

  • Designer Proteins

    Designer Proteins

    Image of the Week

    Scientists are custom-designing proteins, like these nanocages with many green fluorescent proteins attached

  • Seeing Single Molecules Move

    Seeing Single Molecules Move

    Animation

    (1 min 40 sec) Single-molecule analysis using super-resolution microscopes reveals that transcription factors are not usually found bound to their binding sites on DNA.

  • Cancer As a Genetic Disease

    Cancer As a Genetic Disease

    Lecture

    (58 min 33 sec) Understanding that cancer is caused by mutations in genes that regulate cell proliferation has led to the development of targeted drug therapies.

  • Gleevec-Resistant Form of Kinase BCR-ABL

    Gleevec-Resistant Form of Kinase BCR-ABL

    Animation

    (2 min 14 sec) Mutations in the BCR-ABL gene can cause resistance to Gleevec, but another drug, dasatinib, can be used instead.

  • Gleevec Inhibits Cancer-Causing Kinase BCR-ABL

    Gleevec Inhibits Cancer-Causing Kinase BCR-ABL

    Animation

    (3 min 31 sec) The drug Gleevec binds to and inactivates BCR-ABL, a mutant kinase that causes chronic myeloid leukemia. 

  • How Do Fibers Form?

    How Do Fibers Form?

    Activity

    A hands-on activity in which students construct models of sickle-cell hemoglobin fibers inside red blood cells to illustrate how changes in the structure of a protein can affect cell shape. Students are then asked to relate these changes to disease symptoms. Also available in Spanish.

  • 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.

  • 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.

  • 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.

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