HOME >> BIOLOGY >> NEWS
Dartmouth Medical School geneticists discover new role for antisense RNA

Hanover, NH Dartmouth Medical School geneticists studying the biological clock have opened yet another window into the role of an unusual form of RNA known as antisense that blocks the messages of protein-encoding genes.

They found that antisense RNA appears to regulate core timing genes in the circadaian clock that drives the 24-hour light-dark cycle of Neurospora, a model organism better known as bread mold.

The results are reported in the February 27 Nature by Drs. Jennifer Loros and Jay C. Dunlap, both DMS professors, and Susan K. Crosthwaite, formerly a postdoctoral fellow at DMS, and Cas Kramer, both of the University of Manchester, England.

Messenger RNA, which has a single-stranded sequence of nucleotides, is called "sense" because it can be decoded to produce a gene product (a protein). Like DNA, this mRNA can form duplexes with a second strand of RNA whose base sequence is complementary to the first strand. The second strand is called the antisense strand because its nucleotide sequence is the complement of "sense" message. When mRNA forms a duplex with a complementary antisense RNA sequence, the message translation is turned off so the sense strand can no longer be decoded to yield a protein product.

As scientists identify more antisense RNAs, they are beginning to realize these might affect a wide variety of processes. The recent findings, write the authors, "provide an unexpected link between antisense RNA and circadian timing."

Studying the development of spores in the bread mold Neurospora, Dunlap and Loros have teased apart the molecular gears that form the basis of most living clocks. Light and dark cycles reset the clocks, they found, the way turning the hands of a clock does. The clock mechanism, a biological oscillator, keeps time through the delicately balanced interplay of the Neurospora clock genes and proteins in a complex of feedback loops.

"We found a long RNA antisense transcript that ar
'"/>

Contact: DMS Communications
DMS.Communications@dartmouth.edu
603-650-1492
Dartmouth Medical School
27-Feb-2003


Page: 1 2

Related biology news :

1. Dartmouth Medical School awarded $9 million grant for genomics research
2. Dartmouth study advances prion disease research
3. Dartmouth bioengineers develop humanized yeast
4. Dartmouth researchers find two circadian clocks in the same plant tissue
5. Dartmouth engineers closer to mass-producing therapeutic proteins
6. Arsenic in drinking water may be linked to cancer Dartmouth study finds
7. Dartmouth researchers put recycling in perspective
8. Dartmouth researchers identify multi-tasking circadian protein
9. New way found to see light through novel protein identified by Dartmouth geneticists
10. Cancer killing gene found by Dartmouth researchers
11. Dartmouth biologists say algae might be missing mercury link in aquatic food chain

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/11/2017)... PALM BEACH GARDENS, Fla. , April 11, ... biometric identity management and secure authentication solutions, today ... million contract by Intelligence Advanced Research Projects Activity ... technologies for IARPA,s Thor program. "Innovation ... the onset and IARPA,s Thor program will allow ...
(Date:4/5/2017)... SEATTLE , April 5, 2017  The Allen ... the Allen Cell Explorer: a one-of-a-kind portal and dynamic ... large-scale 3D imaging data, the first application of deep ... edited human stem cell lines and a growing suite ... the platform for these and future publicly available resources ...
(Date:3/30/2017)... 2017  On April 6-7, 2017, Sequencing.com will host ... hackathon at Microsoft,s headquarters in Redmond, ... on developing health and wellness apps that provide a ... Genome is the first hackathon for personal genomics ... companies in the genomics, tech and health industries are ...
Breaking Biology News(10 mins):
(Date:10/9/2017)... ... 09, 2017 , ... The award-winning American Farmer television series will feature 3 ... airs Tuesdays at 8:30aET on RFD-TV. , With global population estimates nearing ten ... to continue to feed a growing nation. At the same time, many of our ...
(Date:10/9/2017)... , ... October 09, 2017 ... ... on October 5, 2017, in the medical journal, Epilepsia, Brain Sentinel’s SPEAC® ... gold standard, video EEG, in detecting generalized tonic-clonic seizures (GTCS) using surface ...
(Date:10/7/2017)... WALTHAM, Mass. , Oct. 6, 2017 /PRNewswire/ ... pioneering work of three scientists, Jacques Dubochet, ... whose breakthrough developments in cryo-electron microscopy ... this technology within the structural biology community. The ... Scientific. Scientists can now routinely produce highly resolved, ...
(Date:10/5/2017)... ... ... LabRoots , the leading provider of educational and interactive virtual events ... cancer research with a month-long promotion supporting the advancement of breast cancer research with ... promo code PinkRibbon to get 10 percent off their purchase of every the “Cancer ...
Breaking Biology Technology:
Cached News: