ScienceDaily: Biotechnology News |
- Viruses con bacteria into working for them
- Scientists map one of life's molecular mysteries: Visualisation of the molecular gateway across and into cellular membranes
- Following genetic footprints out of Africa: First modern humans settled in Arabia
| Viruses con bacteria into working for them Posted: 26 Jan 2012 09:37 AM PST Researchers have discovered that certain photosynthetic ocean bacteria need to beware of viruses bearing gifts. These viruses are really con artists carrying genetic material taken from their previous bacterial hosts that tricks the new host into using its own machinery to activate the genes, a process never before documented in any virus-bacteria relationship. The con occurs when a grifter virus injects its DNA into a bacterium living in a phosphorus-starved region of the ocean.  |
| Posted: 26 Jan 2012 09:37 AM PST All living organisms are made up of cells, behind these intricate life forms lie complex cellular processes that allow our bodies to function. Researchers working on protein secretion -- a fundamental process in biology -- have revealed how protein channels in the membrane are activated by special signals contained in proteins destined for secretion. The results help explain the underlying mechanism responsible for the release of proteins such as hormones and antibodies into the blood stream.  |
| Following genetic footprints out of Africa: First modern humans settled in Arabia Posted: 26 Jan 2012 09:37 AM PST A new study, using genetic analysis to look for clues about human migration over sixty thousand years ago, suggests that the first modern humans settled in Arabia on their way from the Horn of Africa to the rest of the world.  |
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