1 / 8

Receptor Proteins

Receptor Proteins. Receiving and responding to messages. Receptor Proteins Proteins in the cell membrane which receive incoming “messages” Cells communicate with each other by sending specific signal molecules to each other. These molecules bind to specific receptor proteins. . Membrane.

jerrod
Download Presentation

Receptor Proteins

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Receptor Proteins Receiving and responding to messages

  2. Receptor Proteins • Proteins in the cell membrane which receive incoming “messages” • Cells communicate with each other by sending specific signal molecules to each other. • These molecules bind to specific receptor proteins. Membrane Signal molecules Receptor Protein

  3. Signal molecules could be: • Hormones • Ions • Neurotransmitters • Nutrients • Drugs

  4. When the signal molecule binds to the receptor protein, what could happen? 1. Change the permeability of the membrane: Allowing certain substances into the cell. For example, the hormone insulin binds to a receptor protein. This causes a protein channel to open and allow glucose into the cell.

  5. 2. A receptor protein may activate a second messenger in the cell: The signal molecule binding to the receptor protein sets off a chain reaction, which could be a series of several reactions within the cell. http://www.youtube.com/watch?v=HnnMOx9_eBY

  6. 3. Enzyme Action: The receptor protein might also be an enzyme that changes the signal molecule or triggers a reaction inside the cell. http://www.dnalc.org/resources/3d/cellsignals.html

  7. How do you think receptor proteins are important in the digestive system? Where would you expect to find receptor proteins in the digestive system?

More Related