1 / 28

CELL COMMUNICATION

CELL COMMUNICATION. Slide show modified from a PREZI by David Knuffke. KINASE: Protein that “phosphorylates” (adds a phosphate to) another molecule TYROSINE KINASES: Proteins that form dimers. Tyrosine amino acid residues are active in transfer of phosphates to relay proteins

noma
Télécharger la présentation

CELL COMMUNICATION

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. CELL COMMUNICATION Slide show modified from a PREZI by David Knuffke

  2. KINASE: Protein that “phosphorylates” (adds a phosphate to) another molecule • TYROSINE KINASES: Proteins that form dimers. Tyrosine amino acid residues are active in transfer of phosphates to relay proteins • Remain ACTIVE as long as LIGAND is attached

  3. Incoming IONS trigger the response

  4. Calcium ions are another common 2nd messenger

  5. Internal signalling molecules released due to external “girst” signals. Trigger sub-response pathways

  6. YOUTUBE Video

  7. The L

  8. AMPLIFICATIONMORE FROM LESS Cells amplify the message

  9. COMPLICATIONA “Branching Network” Simplicity leads to COMPLEXITY • S

  10. MORE EXAMPLESWhy cells communicate? • Wound healing • QUORUM SENSING in bacteria communication among microbes that triggers group response when population reaches certain density • APOPTOSIS-Programmed cell death • Yeast mating

  11. QUORUM SENSING

  12. APOPTOSIS“Cell suicide” Why are “Death proteins“ present in inactive form?

More Related