JUAN GAERTNER / SCIENCE PHOTO LIBRARY JUAN GAERTNER / SCIENCE PHOTO LIBRARY
Insulin binding to insulin receptor, illustration. The insulin receptor (violet) is a transmembrane protein, that is activated by insulin (green). Insulin binding induces structural changes within the receptor. These changes trigger a biochemical chain of events inside the cell, (signal transduction) that finally leads to the activation of the glucose transporter protein (orange), which transports the glucose (yellow) molecules into the cell.
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