Navigation Links
Direct transfer of plant genes from chloroplasts into the cell nucleus
Date:4/13/2012

d overlook these incoming genes.

The second difficulty is in the correct processing of the gene sequence. Genes consist of several modules, separated by non-coding DNA regions (introns). Since the introns obstruct protein synthesis, they need to be removed from the mRNA, a procedure described as splicing. The whole process, ending in synthesis of the correct protein, can resume only once this has taken place. Once again, however, the mRNA is processed differently in the cell nucleus than in the chloroplasts, and for a long time, chloroplast introns seemed to have been an insurmountable hurdle for the correct reading of chloroplast genes in the nucleus.

"But they are actually nothing of the sort", stresses Ralph Bock, head of the research group. "Our trials have shown that the introns are recognised in the cell nucleus and spliced out, even if not always at exactly the same sites as might have been the case in the chloroplasts." Functional proteins are formed despite this. It is thought that the introns even help the splicing enzymes by folding themselves into stable RNA structures, thus directing the enzymes to the right locations. At the same time, the RNA structure seems to help the ribosomes find the correct starting point for protein synthesis.

Since the transfer of genes into the cell nucleus is an extremely slow evolutionary process, which has taken nature millions of years, it has not been possible to investigate the underlying mechanism to date. However, researchers have now managed to fast-forward this gene transfer in the laboratory. Because the cells were subjected to high selection pressure, the transference of genes from the chloroplasts into the nucleus became essential for survival, so that it could be made readily visible. It was found that the transfer takes place without the involvement of RNA and that the DNA apparently jumps directly from the cell's chloroplasts into its nucleus.


'/>"/>
Contact: Professor Dr. Ralph Bock
rbock@mpimp-golm.mpg.de
49-331-567-8700
Max-Planck-Gesellschaft
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Researchers call for a new direction in oil spill research
2. Nanopills release drugs directly from the inside of cells
3. Epigenetic signatures direct the repair potential of reprogrammed cells
4. Coral reef study traces indirect effects of overfishing
5. Nanorod-assembled order affects diffusion rate and direction
6. New smart nanotherapeutics can deliver drugs directly to the pancreas
7. Medbox, Inc. Announces New Board of Directors After Acquisition of Prescription Vending Machines, Inc.
8. Marine Biological Laboratory Course Director Eric Davidson awarded International Prize for Biology
9. Brain parasite directly alters brain chemistry
10. Elsevier announces new 2012 Frontlist eBooks collection on SciVerse ScienceDirect
11. Which direction are herbicides heading?
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Direct transfer of plant genes from chloroplasts into the cell nucleus
(Date:3/30/2015)... DUBLIN , Mar. 26, 2015 Research and ... addition of the "Global Gesture Recognition Market in ... The analysts forecast the Global Gesture Recognition market ... 12.8% over the period 2013-2018. Gesture recognition ... respond to different gestures of an individual. Gesture recognition ...
(Date:3/24/2015)... 24, 2015 Research and Markets ( ... "Global Iris Recognition Market 2015-2019" report to their ... Recognition market to grow at a CAGR of 23.5 ... covers the present scenario and the growth prospects of ... To calculate the market size, the report considers the ...
(Date:3/24/2015)... , March 24, 2015   NexID Biometrics ... with critical security-authentication needs, today announced the beginning of ... (FFD) solution. The company, based in ... at the three-day Connect:ID Expo, which began here today ... NexID said version 2.0 of its SDK boosts the ...
Breaking Biology News(10 mins):Global Gesture Recognition Market in Automotive Sector Report 2015 - Growing Number of Partnerships 2Global Iris Recognition Market 2015-2019 with 3M Cogent, Bioenable Technologies, Cross Match Technology, Iris ID Systems & Safran Dominating 2NexID Begins Shipments Of Version 2.0 Fake-Finger-Detection Solution 2
... SPOKANE, Wash.Birth defects are significantly more common in areas ... as the practice becomes more common, according to a ... Virginia University. The researchers, led by Melissa Ahern, ... Pharmacy, found 235 birth defects per 10,000 births where ...
... TORONTO, Ont., June 22, 2011 Researchers at St. ... what causes sepsis, an often fatal condition that occurs when ... actually be a cause of sepsis, rather than a symptom ... hypothesis and a review of recent research on sepsis were ...
... the ocean has been a long-standing mystery, but new ... marine location can be recovered from the chemistry of ... to feed in separate places, and may respond differently ... declined across their range since the early 1970s, and ...
Cached Biology News:Large numbers of birth defects seen near mountaintop mining operations 2Researchers suggest new way of looking at what causes sepsis 2Discovering lost salmon at sea 2
(Date:4/17/2015)... April 17, 2015  US-Australian drug discovery company, Novogen, ... of Understanding with the Feinstein Institute for Medical ... to collaborate with the objective of ... The collaboration brings together the drug discovery expertise ... of the Feinstein Institute in neurosciences and oncology. ...
(Date:4/16/2015)... April 17, 2015 Spirax Sarco, ... services, released their newly designed, state-of-the-art website in ... facing website effectively promotes the Spirax Sarco brand, ... the information that a site visitor might be ... company capabilities, industries serviced, the latest company news, ...
(Date:4/16/2015)... 16, 2015 Capillus, LLC announces ... physician network in Europe and Asia. The Miami-based ... Fernando Bermúdez, former Business Development Director of Svenson ... veteran, Mr. Bermúdez’s professional achievements include increasing the ... while also penetrating the Portuguese marketplace with centers ...
(Date:4/16/2015)... Streetsboro, Ohio (PRWEB) April 16, 2015 ... Safety Index, overexertion involving an outside source was ... injuries. This includes injuries related to lifting, pushing, ... $15.1 billion in direct costs. The David Round ... Round is committed to working hard to develop ...
Breaking Biology Technology:Novogen and Feinstein Institute Join Forces to Find Effective Treatments for Brain Cancer 2Novogen and Feinstein Institute Join Forces to Find Effective Treatments for Brain Cancer 3Novogen and Feinstein Institute Join Forces to Find Effective Treatments for Brain Cancer 4Novogen and Feinstein Institute Join Forces to Find Effective Treatments for Brain Cancer 5Novogen and Feinstein Institute Join Forces to Find Effective Treatments for Brain Cancer 6Spirax Sarco website has a new look 2Capillus, LLC Extends Laser Hair Therapy Products to Europe and Asia 2The David Round Company Helps Companies Meet OSHA Standards by Combining Safety, Ergonomics, and Productivity 2
... CryoLife, Inc. (NYSE: CRY ),a biomaterials, medical ... 2008 financial results will be released on,Thursday, July 31, ... webcast at 10:00 a.m. Eastern Time, July 31, 2008, ... session hosted by Steven G.,Anderson, president and CEO of ...
... by 12.8% to EUR276.3m (First Half: up by ... 15.2% to EUR515.4m) Adjusted Group Results in the Second Quarter Tripled From EUR6.3m to ... EUR17.6m ... for 2008, DUSSELDORF, Germany, July 15 Gerresheimer AG,again increased its sales and results in ...
... report published in the July 8 issue of the ... ( PNAS ) is the first to describe ... tiny nanoclusters of metallic gold. The study, which confirms ... work of researchers at four universities on two continents. ...
Cached Biology Technology:CryoLife Announces Release Date and Teleconference Call Details for Second Quarter 2008 Financial Results 2Gerresheimer Further Increases its Sales and Earnings Power 2Gerresheimer Further Increases its Sales and Earnings Power 3Gerresheimer Further Increases its Sales and Earnings Power 4Gerresheimer Further Increases its Sales and Earnings Power 5Gerresheimer Further Increases its Sales and Earnings Power 6Study reveals principles behind stability and electronic properties of gold nanoclusters 2Study reveals principles behind stability and electronic properties of gold nanoclusters 3Study reveals principles behind stability and electronic properties of gold nanoclusters 4
... iTaq DNA polymerase is an ... for both conventional and real-time ... supplied at a concentration of ... includes 250 units polymerase, 1.25 ...
hnRNP U (H-94)...
... sheer in-house demand is causing shortages in your ... This can cause unwanted distractions, problems and delays. ... your hard work and endeavour! Bring us your ... market it internationally. We work under ISO 9001 ...
... is causing shortages in your laboratory or ... cause unwanted distractions, problems and delays. ... your hard work and endeavour! Bring us ... up,and market it internationally. We work under ...
Biology Products: