Featured Research

from universities, journals, and other organizations

A Comprehensive Protein Map of a Stem Cell

Date:
April 7, 2008
Source:
American Society for Biochemistry and Molecular Biology
Summary:
Researchers have successfully identified over 5,000 proteins that are present in embryonic stem cells, tripling the size of previous results and in the process creating the largest quantified protein map to date. Stem cells hold great potential in biology and medicine, but a host of questions lingers about how they operate and convert into other cells.

Researchers have successfully identified over 5,000 proteins that are present in embryonic stem cells, tripling the size of previous results and in the process creating the largest quantified protein map to date.

Related Articles


Stem cells hold great potential in biology and medicine, but a host of questions lingers about how they operate and convert into other cells. To help answer these questions, researchers have begun taking a 'big picture' approach, identifying all the proteins that are expressed in stem cells.

Currently, around 1700 proteins have been identified in stem cells. Now, using mass spectrometry and special "heavy" amino acids (made with carbon-13), Matthias Mann and colleagues quantified 5111 distinct mouse stem cell proteins. As expected, a good portion of these proteins are involved in rapid cell growth, but overall the proteome encompassed a broad range of cell functions.

While this study may help uncover new clues to stem cell biology, it does raise the bar on the complexity of these important cells, considering they express at least 25% of all known mouse proteins.

Journal reference: "SILAC-labeling and proteome quantitation of mouse embryonic stem cells to a depth of 5111 proteins" by Johannes Graumann, Nina Hubner, Jeong Beom Kim, Kinarm Ko, Markus Moser, Chanchal Kumar, Jόrgen Cox, Hans Schφler and Matthias Mann. Molecular & Cellular Proteomics. April 2008.


Story Source:

The above story is based on materials provided by American Society for Biochemistry and Molecular Biology. Note: Materials may be edited for content and length.


Cite This Page:

American Society for Biochemistry and Molecular Biology. "A Comprehensive Protein Map of a Stem Cell." ScienceDaily. ScienceDaily, 7 April 2008. <www.sciencedaily.com/releases/2008/04/080404122202.htm>.
American Society for Biochemistry and Molecular Biology. (2008, April 7). A Comprehensive Protein Map of a Stem Cell. ScienceDaily. Retrieved April 1, 2015 from www.sciencedaily.com/releases/2008/04/080404122202.htm
American Society for Biochemistry and Molecular Biology. "A Comprehensive Protein Map of a Stem Cell." ScienceDaily. www.sciencedaily.com/releases/2008/04/080404122202.htm (accessed April 1, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Wednesday, April 1, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Liberia Sees Resurgence of Drug Trafficking as Ebola Wanes

Liberia Sees Resurgence of Drug Trafficking as Ebola Wanes

AFP (Apr. 1, 2015) — The governments of Liberia and Sierra Leone have been busy fighting the menace created by the deadly Ebola virus, but illicit drug lords have taken advantage of the situation to advance the drug trade. Duration: 01:12 Video provided by AFP
Powered by NewsLook.com
Stigma Stalks India's Leprosy Sufferers as Disease Returns

Stigma Stalks India's Leprosy Sufferers as Disease Returns

AFP (Apr. 1, 2015) — The Indian government declared victory over leprosy in 2005, but the disease is making a comeback in some parts of the country, with more than a hundred thousand lepers still living in colonies, shunned from society. Duration: 02:41 Video provided by AFP
Powered by NewsLook.com
7-Year-Old Girl Gets 3-D Printed 'robohand'

7-Year-Old Girl Gets 3-D Printed 'robohand'

AP (Mar. 31, 2015) — Although she never had much interest in prosthetic limbs before, Faith Lennox couldn&apos;t wait to slip on her new robohand. The 7-year-old, who lost part of her left arm when she was a baby, grabbed it as soon as it came off a 3-D printer. (March 31) Video provided by AP
Powered by NewsLook.com
Solitair Device Aims to Takes Guesswork out of Sun Safety

Solitair Device Aims to Takes Guesswork out of Sun Safety

Reuters - Innovations Video Online (Mar. 31, 2015) — The Solitair device aims to take the confusion out of how much sunlight we should expose our skin to. Small enough to be worn as a tie or hair clip, it monitors the user&apos;s sun exposure by taking into account their skin pigment, location and schedule. Matthew Stock 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

 

Health & Medicine

Mind & Brain

Living & Well

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