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  1. Ligands & receptors (article) | Khan Academy

    Ligands, which are produced by signaling cells and interact with receptors in or on target cells, come in many different varieties. Some are proteins, others are hydrophobic molecules like …

  2. Introduction to cell signaling (article) | Khan Academy

    Signaling molecules are often called ligands, a general term for molecules that bind specifically to other molecules (such as receptors). The message carried by a ligand is often relayed through …

  3. A closer look at types of chromatography - Khan Academy

    Affinity HPLC: Employs a stationary phase with specific ligands that can bind selectively to certain molecules, such as proteins or antibodies, allowing for highly specific separations.

  4. Cooperativity and the Hill coefficient (article) | Khan Academy

    When one ligand binds to a site, it increases the likelihood that additional ligands will bind to other sites. The substrate-binding curve for these types of enzymes appears S-shaped, as the …

  5. Ligand Gated Ion Channels (video) | Khan Academy

    Ligand-gated ion channels, a type of membrane receptor, respond rapidly to ligands, making them crucial in neurons. These channels open or close when a ligand binds, altering the cell's …

  6. Membrane Receptors (video) | Khan Academy

    Only specific ligands can bind with specific membrane receptors and we call this lock and key. A more updated name for it is induced fit, in which the ligands and memory receptors are a little …

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  8. Enzyme Linked Receptors (video) | Khan Academy

    They play a crucial role in cell growth, differentiation, and survival by responding to ligands like growth factors and hormones. When activated, RTKs trigger a series of enzymatic reactions, …

  9. Response to a signal (article) | Khan Academy

    Signals (a.k.a. ligands) and receptors come in many varieties, and binding can trigger a wide range of signal relay cascades inside the cell, from short and simple to long and complex.

  10. Unit 4: Cell communication and cell cycle - Khan Academy

    Learn Membrane Receptors Ligands & receptors G Protein Coupled Receptors Signal relay pathways Cellular mechanism of hormone action