Vertebrate cells apparently possess a protein that by binding to clusters of 5-methylcytosine ensures that the bound gene will stay in the "off" position.This control on the role of gene regulation is a result of
A)translation.
B)enhancer expression.
C)methylation.
D)promotor expression.
E)operator suppression.

Question

Quizplus · Accepted Answer

The protein that binds to clusters of 5-methylcytosine is called methyl-CpG-binding protein 2 (MeCP2), which plays a role in the epigenetic control of gene expression through DNA methylation. Methylation of cytosine in DNA occurs when a methyl group is added to the fifth carbon atom of the cytosine ring. The binding of MeCP2 to the methylated region of DNA helps to stabilize chromatin structure and promote the formation of repressive chromatin, leading to the "off" position of the bound gene. Therefore, the control on the role of gene regulation described in the question is a result of methylation.

Vertebrate Cells Apparently Possess a Protein That by Binding to Clusters