arrow grid linear view icon
The College of Arts Sciences

Slo-mo unwrapping of nucleosomal DNA promes protein's role

By: Tom Fleischman,  Cornell Chronicle
Wed, 01/11/2017

Nucleosomes are tightly packed bunches of DNA and protein which, when linked together as chromatin, form each of the 46 chromosomes found in human cells.

The organization of DNA in nucleosomes is important not just for DNA packaging; it also forms the basis for the regulation of gene expression. By controlling the access to DNA, nucleosomes help facilitate all kinds of gene activity, from RNA transcription to DNA replication and repair.

A research group led by Lois Pollack, professor of applied and engineering physics, used a combination of X-ray and fluorescence-based approaches to study how the shapes and compositions of nucleosomes change after being destabilized.

Read the full article here.