histone

What: "Non-helical model is also useful for histone binding of DNA, but the difference between histone and protamine is as the guy differentiates, histone is globular protein and protamine is a beta sheet. What this means is protamine is like a fibril adjacent to DNA, but histone is like a cylinder and DNA is the coil that wraps around it. So even though DNA is non-helical and the strands do not turn around each other, double stranded DNA turns around the histone. "

Writer: Biomiast

LCC:

Where:

Date: Feb 21 2014 3:57 PM

What:

"Two major tags can be added to DNA that generally have opposing effects on information exposure. Using a stoplight as an analogy for these DNA tags, DNA methylation is like a red light, while histone acetylation is like a green light. Thus, instructions that are "methylated" are not read or carried out by the cell (red light). On the other hand, histone acetylation, which is the addition of an acetyl group to the tennis ball-like histone proteins that DNA is wrapped around inside cells, actually allows the "string" to be more loosely wrapped around the "tennis balls", making it easier for the instructions to be read and executed by the cell (green light)."

Writer: MARK SHAPSES AND ADITYA MURALIDHARAN

LCC:

Where:

Date: Oct 7 2017 10:21 AM

What:

"Professor Knox has some early data to show that one epigenetic process called “histone arginine methylation” is involved in switching on the interleukin 8 gene. Histone arginine methylation is like a dimmer switch for gene activation. Different levels and positions of histone arginine methylation ‘fine tune' how active a gene is."

Writer: Alan Knox

LCC:

Where: Reference Link Has Evaporated

Date: May 1 2015 3:00 PM