Volume 147, Issue 2, Pages 267-269 (August 2014) Mutational Signatures in Helicobacter pylori–induced Gastric Cancer: Lessons From New Sequencing Technologies Sarah Derks Gastroenterology Volume 147, Issue 2, Pages 267-269 (August 2014) DOI: 10.1053/j.gastro.2014.06.019 Copyright © 2014 AGA Institute Terms and Conditions
Figure 1 Two pathways of C>T mutation in gastric cancer. (Above arrow) Activation-induced deamination (AID) removes the amino group of cytosine turning it into uracil. (Below arrow) Cytosine methylation induced deamination. The binding of a methyl group to the 5-carbon position of the cytosine ring results in 5-methylcytosine. A 5-methylcytosine spontaneously deaminates into an uracil. The uracil is replaced by a thymine after DNA replication. Gastroenterology 2014 147, 267-269DOI: (10.1053/j.gastro.2014.06.019) Copyright © 2014 AGA Institute Terms and Conditions