Featured Research

from universities, journals, and other organizations

Cell's Powerhouses Dismantled: Complete Inventory Of All Proteins In Mitochondria

Date:
October 16, 2009
Source:
VIB (the Flanders Institute for Biotechnology)
Summary:
All of life is founded on the interactions of millions of proteins. These are the building blocks for cells and form the molecular mechanisms of life. The problem is that proteins are extremely difficult to study, particularly because there are so many of them and they appear in all sizes and weights. Now, researchers have made a breakthrough in protein research -- making virtually the complete inventory of all the proteins in the mitochondria, the energy producers found in every cell.

All of life is founded on the interactions of millions of proteins. These are the building blocks for cells and form the molecular mechanisms of life. The problem is that proteins are extremely difficult to study, particularly because there are so many of them and they appear in all sizes and weights. Now, Kris Gevaert from VIB/Ghent University and colleagues from the universities of Freiburg and Bochum have achieved a breakthrough in protein research. Using yeast, they have succeeded in making virtually the complete inventory of all the proteins in the mitochondria, the energy producers found in every cell.

Their research findings are being published in the journal Cell.

During their research, the scientists encountered the Icp55 enzyme, which fulfills an important role in the stabilization of the proteins in the mitochondria. Until now, it was unclear just how the cell accomplished this. Icp55 turns out to be a molecular pair of scissors that snips off one of the ends of certain proteins, so that these proteins are transformed from an unstable to a stable form.

"This is a crucial step for fundamental research on proteins, the building blocks of life," says Kris Gevaert, VIB researcher at Ghent University. "It's the first time that such a precise protein determination of the mitochondria has been achieved. Our breakthrough was made possible by COFRADIC, a technology that enables us to analyze protein mixtures much more sensitively and accurately."

"We're now able to detect protein forms that were simply overlooked before," Kris Gevaert continues. "So we're receiving requests for scientific collaborations from all over the world."

COFRADIC is a technology developed by VIB/Ghent University researchers Joël Vandekerckhove and Kris Gevaert. With COFRADIC, the traditional conception of protein identification has been turned upside-down. Instead of first separating the intact proteins, the entire protein mixture is cut into small pieces (peptides) − which are more soluble and much easier to separate in order to conduct further analyses. Applying this approach to the samples provided by the German scientists revealed a new protein (Icp55) − which proved to be key in explaining protein stabilization in mitochondria, a mystery that has been unsolved up to now.


Story Source:

The above story is based on materials provided by VIB (the Flanders Institute for Biotechnology). Note: Materials may be edited for content and length.


Cite This Page:

VIB (the Flanders Institute for Biotechnology). "Cell's Powerhouses Dismantled: Complete Inventory Of All Proteins In Mitochondria." ScienceDaily. ScienceDaily, 16 October 2009. <www.sciencedaily.com/releases/2009/10/091015123602.htm>.
VIB (the Flanders Institute for Biotechnology). (2009, October 16). Cell's Powerhouses Dismantled: Complete Inventory Of All Proteins In Mitochondria. ScienceDaily. Retrieved August 30, 2014 from www.sciencedaily.com/releases/2009/10/091015123602.htm
VIB (the Flanders Institute for Biotechnology). "Cell's Powerhouses Dismantled: Complete Inventory Of All Proteins In Mitochondria." ScienceDaily. www.sciencedaily.com/releases/2009/10/091015123602.htm (accessed August 30, 2014).

Share This




More Plants & Animals News

Saturday, August 30, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) — A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. Video provided by Newsy
Powered by NewsLook.com
Experimental Ebola Drug ZMapp Cures Lab Monkeys Of Disease

Experimental Ebola Drug ZMapp Cures Lab Monkeys Of Disease

Newsy (Aug. 29, 2014) — In a new study, a promising experimental treatment for Ebola managed to cure a group of infected macaque monkeys. Video provided by Newsy
Powered by NewsLook.com
Killer Amoeba Found in Louisiana Water System

Killer Amoeba Found in Louisiana Water System

AP (Aug. 28, 2014) — State health officials say testing has confirmed the presence of a killer amoeba in a water system serving three St. John the Baptist Parish towns. (Aug. 28) Video provided by AP
Powered by NewsLook.com
Raw: Australian Sheep Gets Long Overdue Haircut

Raw: Australian Sheep Gets Long Overdue Haircut

AP (Aug. 28, 2014) — Hoping to break the record for world's wooliest, Shaun the sheep came up 10 pounds shy with his fleece weighing over 50 pounds after being shorn for the first time in years. (Aug. 28) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins