Featured Research

from universities, journals, and other organizations

All Eukaryotic Kinases Share One Common Set Of Substrates

Date:
August 25, 2007
Source:
Public Library of Science
Summary:
A team of researchers has established that all eukaryotic kinases share a common set of substrates, nine amino acid segments shared by all proteins that are known to be phosphorylated.

Kinase mediated phosphorylation is generally recognised as the major regulator of virtually all metabolic activities in eukaryotic cells including proliferation, gene expression, motility, vesicular transport and programmed cell death. Dysregulation of protein phosphorylation plays a major role in many diseases such as cancer and neurodegenerative disorders. In addition, the elucidation of many kinase cascades has proved pivotal for understanding and manipulating cellular behaviour in a variety of divergent eukaryotes.

Related Articles


Within these organisms a wide rage of kinases has been defined. The human genome contains over 500 protein kinase genes, whereas the genome of a small plant like Arabidopsis thaliana, the mouse-ear cress, contains nearly 1,000.

Despite this diversity, a team led by Maikel Peppelenbosch, PhD, a professor of Cell Biology at the University Medical Center in Groningen, the Netherlands, has established that all eukaryotic kinases share a common set of substrates, nine amino acid segments shared by all proteins that are known to be phosphorylated.

Using a peptide array, the investigators tested all kinase substrates described in the PhosphoBase phosphorylation database. They incubated them with radio actively labelled ATP as a source of phosphate, and lysates (cell content) of two species of yeast (Candida albicans and Pichia pastoris), a fungus (Fusarium solani), a plant (Triticum aeastivum, wheat), a fruit fly (Drosophila melanogaster), a mouse (Mus musculus), and man (Homo sapiens) as a source of kinases. Their results show that the large diversity of kinases tested is contrasted by a very small diversity in the substrates that are sensitive to them.

These results indicate that, although probably thousands of different kinases have developed during the 2.4 billion years of eukaryotic evolution, they show no significant functional difference. Furthermore, the results suggest the presence of a set of kinase substrates in an ancestral eukaryote that has remained unchanged in eukaryotic life, so the earliest eukaryotes may have been less 'primitive' than generally thought.

Since drugs targeting protein kinases are promising for the therapeutic treatment of a host of different diseases, this result may prove to be useful in the testing of such drugs.

Citation: Diks SH, Parikh K, van der Sijde M, Joore J, Ritsema T, et al (2007) Evidence for a Minimal Eukaryotic Phosphoproteome". PLoS ONE 2(8):e777. doi:10.1371/journal.pone.0000777


Story Source:

The above story is based on materials provided by Public Library of Science. Note: Materials may be edited for content and length.


Cite This Page:

Public Library of Science. "All Eukaryotic Kinases Share One Common Set Of Substrates." ScienceDaily. ScienceDaily, 25 August 2007. <www.sciencedaily.com/releases/2007/08/070822081911.htm>.
Public Library of Science. (2007, August 25). All Eukaryotic Kinases Share One Common Set Of Substrates. ScienceDaily. Retrieved November 24, 2014 from www.sciencedaily.com/releases/2007/08/070822081911.htm
Public Library of Science. "All Eukaryotic Kinases Share One Common Set Of Substrates." ScienceDaily. www.sciencedaily.com/releases/2007/08/070822081911.htm (accessed November 24, 2014).

Share This


More From ScienceDaily



More Plants & Animals News

Monday, November 24, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Winter Can Cause Depression — Here's How To Combat It

Winter Can Cause Depression — Here's How To Combat It

Newsy (Nov. 23, 2014) Millions of American suffer from seasonal depression every year. It can lead to adverse health effects, but there are ways to ease symptoms. Video provided by Newsy
Powered by NewsLook.com
Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

Ebola-Hit Sierra Leone's Late Cocoa Leaves Bitter Taste

AFP (Nov. 23, 2014) The arable district of Kenema in Sierra Leone -- at the centre of the Ebola outbreak in May -- has been under quarantine for three months as the cocoa harvest comes in. Duration: 01:32 Video provided by AFP
Powered by NewsLook.com
Anglerfish Rarely Seen In Its Habitat Will Haunt You

Anglerfish Rarely Seen In Its Habitat Will Haunt You

Newsy (Nov. 22, 2014) For the first time Monterey Bay Aquarium recorded a video of the elusive, creepy and rarely seen anglerfish. Video provided by Newsy
Powered by NewsLook.com
Birds Around the World Take Flight

Birds Around the World Take Flight

Reuters - Light News Video Online (Nov. 22, 2014) An imperial eagle equipped with a camera spreads its wings over London. It's just one of the many birds making headlines in this week's "animal roundup". Jillian Kitchener reports. Video provided by Reuters
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:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

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