Conceptual image of gene expression in DNA
Enhancers: Conserved in Activity, Not in Sequence
Certain stretches of DNA that regulate gene expression have evolved differently from protein-coding genes.
ABOVE: © ISTOCK.COM, KTSIMAGE
Enhancers: Conserved in Activity, Not in Sequence
Enhancers: Conserved in Activity, Not in Sequence

Certain stretches of DNA that regulate gene expression have evolved differently from protein-coding genes.

Certain stretches of DNA that regulate gene expression have evolved differently from protein-coding genes.

ABOVE: © ISTOCK.COM, KTSIMAGE

RNA polymerase

Photograph from 1918 influenza pandemic shows mask-wearing women holding stretchers at backs of ambulances in Saint Louis, Missouri.
100-Year-Old Lungs Yield Genetic Samples of 1918 Flu Viruses
Christie Wilcox | May 18, 2021
Influenza RNA sequences from three sets of lungs preserved in formalin since 1918 provide new insights into the deadly pandemic.
Paused RNA Polymerase Quashes New Initiation of Transcription
Shawna Williams | Oct 1, 2017
Pauses may help cells fine-tune gene expression.
Using RNA to Amplify RNA
Abby Olena | Aug 15, 2016
Researchers apply in vitro evolution to generate an RNA enzyme capable of copying and amplifying RNA.
William Greenleaf: Born for Biophysics
Anna Azvolinsky | Jun 1, 2015
Assistant Professor, Department of Genetics, Stanford University. Age: 35
Polymerase Pieces
Jef Akst | Dec 1, 2014
Researchers discover a new subunit of a bacterial RNA polymerase—as well as hints of its potential role in defending against viruses.
DNA Damage Scout
Andrew P. Han | Feb 11, 2014
Researchers are beginning to appreciate a role for RNA polymerase beyond gene transcription.
Living Transistors
Kate Yandell | Apr 1, 2013
Scientists are trying to turn cells into tiny computers.