Properties of Unusual Virus Revealed in Research
The researchers uncovered clues that may explain how and why a particular virus, called N4, injects an unusual substance — an RNA polymerase protein — into an E. coli bacterial cell. Credit: K.H. Choi and J.D. Hayden, Penn State
Scientists Sequence Woolly-Mammoth Genome
Penn State University genomicists Webb Miller and Stephan C. Schuster, in front of the Roche / 454 Life Sciences' Genome Sequencer 20 System that was used to sequence mammoth mitochondrial DNA from the hair of 10 woolly mammoths. Credit: Lynn Tomsho, Penn State
C.I. Noll Award Presented to Hanna-Rose and Hopkins
Researchers Shed Light on Evolution of Gene Regulation
The team of scientists used red blood cells from a mouse to study the mechanisms of gene regulation. The research is expected to help in the development of new therapies to treat people who suffer from sickle-cell anemia and other blood disorders. Credit: Wikipedia Commons (Public Domain)
Teh-Hui Kao Honored with Teaching Award
Bryant Receives Prize from the Rebeiz Foundation
Woolly-Mammoth Gene Study Changes Extinction Theory
Penn State University genomicists Webb Miller and Stephan C. Schuster, in front of the Roche / 454 Life Sciences' Genome Sequencer 20 System that was used to sequence mammoth mitochondrial DNA from the hair of 10 woolly mammoths. Credit: Lynn Tomsho, Penn State
A Survivor in Greenland: A Novel Bacterial Species is Found Trapped in 120,000-Year-Old Ice
Credit: Penn State A scanning electron microscope image of the Chryseobacterium greenlandensis bacteria found in a Greenland glacier.
Postle Elected Fellow of American Academy of Microbiology
Scientists Identify Key Roadblock to Gene Expression
Credit: B. Franklin Pugh, Penn State In yeast, a nucleosome sits on top of the transcription start site, so RNA polymerase must contend with that nucleosome as soon as it begins to transcribe the gene. In contrast, nucleosomes are positioned further downstream in fruit flies, so transcription starts but then soon pauses at the first nucleosome RNA polymerase encounters.
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