00:01
For this question, we are looking at the role of the protein p53.
00:05
And this is going to be a protein that functions as a tumor suppressor, meaning that it's going to prevent the formation of cancerous cells and suppress the occurrence of cancer and tumors.
00:19
So in this sequence, we're starting with uv light from the sun, and it's going to come into contact with the skin of an individual.
00:28
And this uv radiation is going to cause.
00:31
Certain dna damage.
00:33
Specifically, we're going to have our cytosines and thymidines are going to start to pair down the dna strand rather than across.
00:43
And that's going to cause some error in replication of dna and can cause some significant damage and mutations.
00:52
These mutations can be picked up by one of the proteins inside the cell we call p53.
00:58
And from there, it's going to activate other proteins to stop cell replication and prevent it from multiplying and carrying on that mutation and error...