1 / 5

Control of Cell Division

Control of Cell Division. Controlled by proteins. Cell Cycle. checkpoints. G 1 checkpoint -If cell is healthy and the correct size, proteins trigger DNA synthesis (otherwise cell rests or never divides again G 0 )

tynice
Télécharger la présentation

Control of Cell Division

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. Control of Cell Division Controlled by proteins

  2. Cell Cycle

  3. checkpoints • G1 checkpoint-If cell is healthy and the correct size, proteins trigger DNA synthesis (otherwise cell rests or never divides again G0 ) • G2 checkpoint-DNArepair enzymes check the results of DNA replication from the S phase. If correct-proteins trigger mitosis • Mitosis checkpoint-proteins signal the cell to exit mitosis

  4. Loss of control: Cancer • Regulatory proteins for the checkpoints are coded for by genes • If a gene mutates, proteins may not function properly • Loss of cell cycle checkpoint controls leads to cancer • Some mutations stimulate cell growth others interfere with the ability of control proteins to stop or slow the cell cycle • HeLa cells

More Related