Satellite Banner
Genomics
Scientific Community
 
Become a Member | Sign in
Home>News>This Article
  News
Return

Length Matters in Gene Expression

Published: Monday, October 08, 2012
Last Updated: Monday, October 08, 2012
Bookmark and Share
Research team reveals a surprising interplay between the ends of human genes: If a protein-coding gene is too short it becomes inactive!

The findings also explain how some short genes have adapted to circumvent this handicap.

Gene ends communicate

Human genomes harbour thousands of genes, each of which gives rise to proteins when it is active. But which inherent features of a gene determine its activity? Postdoctoral Scholar Pia Kjølhede Andersen and Senior Researcher Søren Lykke-Andersen from the Danish National Research Foundation’s Centre for mRNP Biogenesis and Metabolism have now found that the distance between the gene start, termed the ‘promoter’, and the gene end, the ‘terminator’, is crucial for the activity of a protein-coding gene. If the distance is too short, the gene is transcriptionally repressed and the output is therefore severely decreased. This finding outlines a completely new functional interplay between gene ends.

Small genes utilise specialised terminators

Fortunately, most human protein-coding genes are long and are therefore not repressed by this mechanism. However, some genes, e.g. ‘replication-dependent histone genes’, are very short. How do such genes express their information at all? Interestingly, many of these differ from the longer protein-coding genes by containing specialised terminators. And in fact, if such a specialised terminator replaces a normal terminator in a short gene context, the short gene is no longer transcriptionally repressed. It therefore appears that naturally occurring short genes have evolved ‘their own’ terminators to achieve high expression levels.

The new findings add to a complex molecular network of intragenic communication and help us to understand the basic function of genes.

The researchers behind the results that have just been published in the international journal Genes & Development are affiliated with the Danish National Research Foundation’s Centre for mRNP Biogenesis and Metabolism at the Department of Molecular Biology and Genetics, Aarhus University.


Further Information

Join For Free

Access to this exclusive content is for Technology Networks Premium members only.

Join Technology Networks Premium for free access to:

  • Exclusive articles
  • Presentations from international conferences
  • Over 3,900+ scientific posters on ePosters
  • More than 5,300+ scientific videos on LabTube
  • 35 community eNewsletters


Sign In



Forgotten your details? Click Here
If you are not a member you can join here

*Please note: By logging into TechnologyNetworks.com you agree to accept the use of cookies. To find out more about the cookies we use and how to delete them, see our privacy policy.


Scientific News
Big Genetics in BC: The American Society for Human Genetics 2016 Meeting
Themes at this year's meeting ranged from the verification, validation, and sharing of data, to the translation of laboratory findings into actionable clinical results.
Cancer Genetics: Key to Diagnosis, Therapy
When applied judiciously, cancer genetics directs caregivers to the right drug at the right time, while sparing patients of unnecessary or harmful treatments.
Accelerating the Detection of Foodborne Bacterial Outbreaks
The speed of diagnosis of foodborne bacterial outbreaks could be improved by a new technique developed by researchers at the Georgia Institute of Technology.
Top 10 Life Science Innovations of 2016
2016 has seen the release of some truly innovative products. To help you digest these developments, The Scientist have listed their top picks for the year.
Scientists Identify Unique Genomic Features in Testicular Cancer
The findings may shed light on factors in other cancers that influence their sensitivity to chemotherapy.
Secret Phenotypes: Disease Devils in Invisible Details
Algorithmic deep phenotyping exposes masses of hidden traits and possible subtle genetic connections relevant to unseen influences on disease.
Cracking the Code of a Deadly Virus
Researchers have exploited weaknesses in VEEV's genetic code, creating a far less deadly variant.
Hunting the Missing Link Between Genetics and the Environment
The International Phenome Centre Network (IPCN) works to transform healthcare through phenomics - the dynamic interactions between our genes and our environment.
Repurposing Genes for Brain Development
Mammalian bone gene may be repurposed to promote cognition in humans.
Enhancing CRISPR to Explore Further
Researchers have developed sOPTiKO, a more efficient and controllable CRISPR genome editing platform.
Skyscraper Banner

SELECTBIO Market Reports
Go to LabTube
Go to eposters
 
Access to the latest scientific news
Exclusive articles
Upload and share your posters on ePosters
Latest presentations and webinars
View a library of 1,800+ scientific and medical posters
3,900+ scientific and medical posters
A library of 2,500+ scientific videos on LabTube
5,300+ scientific videos
Close
Premium CrownJOIN TECHNOLOGY NETWORKS PREMIUM FOR FREE!