Navigation Links
Selectively manipulating protein modifications
Date:3/10/2013

This press release is available in German.

Protein activity is strictly regulated. Incorrect or poor protein regulation can lead to uncontrolled growth and thus cancer or chronic inflammation. Members of the Institute of Veterinary Biochemistry and Molecular Biology from the University of Zurich have identified enzymes that can regulate the activity of medically important proteins. Their discovery enables these proteins to be manipulated very selectively, opening up new treatment methods for inflammations and cancer.

For a healthy organism, it is crucial for proteins to be active or inactive at the right time. The corresponding regulation is often based on a chemical modification of the protein structure: Enzymes attach small molecules to particular sites on a protein or remove them, thereby activating or deactivating the protein. Members of the Institute of Veterinary Biochemistry and Molecular Biology from the University of Zurich in collaboration with other Institutes have now discovered how the inactivation of a protein, which is important for medicine, can be reversed.

New group of ADP-ribosylhydrolases identified

An important protein modification is ADP-ribosylation, which is involved in certain types of breast cancer, cellular stress reactions and gene regulation. So-called ADP-ribosyltransferases attach the ADP ribose molecule to proteins, thereby altering their function. In recent years, many ADP-ribosyltransferases have been discovered that can convey single or several ADP-riboses to different proteins. Enzymes that can remove these riboses again, however, are less well known. Professor Michael Hottiger's team of researchers has now identified a new group of such ADP-ribosylhydrolases. The scientists discovered that a so-called macrodomain is responsible for removing the ADP-riboses in human proteins, but also in the bacterium Archaeoglobus fulgidus.

"We therefore assume that the reversal of the modification takes place in a similar way in different species," explains Michael Hottiger.

Biomedically relevant: inactivation of the modified enzyme GSK3β

The researchers also prove that ADP-ribosylhydrolases can remove the ADP-ribose of the intensively studied enzyme GSK3β, which regulates the synthesis of storage substances and is important in the progression of various diseases. ADP-ribosylation deactivates GSK3β, which can be reversed again by the newly identified enzyme. "Our discovery enables ADP-ribose modification to be manipulated and tested selectively, and new treatment methods developed for diseases such as inflammations or cancer," concludes Michael Hottiger.


'/>"/>

Contact: Michael Hottiger
hottiger@vetbio.uzh.ch
41-446-355-474
University of Zurich
Source:Eurekalert

Related biology news :

1. Research breakthrough selectively represses the immune system
2. Experimental drug combination selectively destroys lymphoma cells
3. Manipulating chromatin loops to regulate genes may offer future treatments for blood diseases
4. Manipulating the microbiome could help manage weight
5. IU biologists offer clearer picture of how protein machine systems tweak gene expression
6. Making memories: How 1 protein does it
7. Embryonic development protein active in cancer growth
8. More effective method of imaging proteins
9. The loss of a protein makes jump the tumor to the lymph node
10. Gold nanoantennas detect proteins
11. The Japanese traditional therapy, honokiol, blocks key protein in inflammatory brain damage
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/6/2016)... -- Zimmer Biomet Holdings, Inc. (NYSE and SIX: ZBH) (the "Company") ... million principal amount of its 1.414% senior unsecured notes due ... unsecured notes due 2026. The closing of ... to the satisfaction of customary closing conditions.  The notes will ... The Company intends to use the net proceeds from ...
(Date:12/2/2016)... , December 1, 2016 ... (Fingerprint, Voice), Future Technology (Iris Recognition System), Vehicle ... - Global Forecast to 2021", published by MarketsandMarkets, ... Million in 2016, and is projected to grow ... CAGR of 14.06%.      (Logo: http://photos.prnewswire.com/prnh/20160303/792302) ...
(Date:11/29/2016)... 29, 2016 BioDirection, a privately held medical ... the objective detection of concussion and other traumatic brain ... completed a meeting with the U.S. Food and Drug ... Pre-Submission Package. During the meeting company representatives reviewed plans ... precursor to commencement of a planned pilot trial. ...
Breaking Biology News(10 mins):
(Date:12/7/2016)... ... December 07, 2016 , ... ... that it has become a Wonderware Certified System Integrator Partner. Huffman Engineering ... Schneider Electric Software. , “The System Integrator Partner certification gives customers confidence that ...
(Date:12/7/2016)... the association for the California life ... st Century Cures legislation in Congress. The bill passed ... and in the Senate on December 7 by a 94-5 ... , president & CEO of Biocom: "Today, Congress ... patients around the world. The measure culminates three years of ...
(Date:12/7/2016)... ANN ARBOR, Mich. , Dec. 7, ... developing breakthrough immune modulatory medicines, announced today the initiation ... lead therapeutic candidate, LYC-30937- E nteric C oated, ... skin disease that is estimated to affect as many ... , with approximately 1.5 - 3 million cases ...
(Date:12/7/2016)... (PRWEB) , ... December 07, ... ... is opening applications to an early access program for SmartBiome -- a ... deep-sequencing with the simultaneous specific enrichment and detection of hundreds of different ...
Breaking Biology Technology: