Navigation Links
Protein extremes gain relevance in massive proteomic studies

Researchers at University of Ghent, Belgium, and Universitat Autnoma de Barcelona (UAB) develop a new procedure to identify the two extremes of protein molecules and their processing and maturing in in-vivo and ex-vivo massive proteomic studies. The research has been published online at Nature Methods, under the title of "Complementary Positional Proteomics for Screening of Endo- and Exoproteases".

The world of proteins is one of the most complex and fundamental in living beings given that these biomolecules carry out and control or intervene in most biological functions. The massive identification and characterisation in a multitude of live organisms and in different vital stages has been and remains one of the most important tasks of proteomics, since it allows for further calibration of their role in biological functions and pathologies/diseases and to develop control strategies (e.g. drugs and vaccines).

Until recently most proteomic studies were focused on internal regions of proteins, usually those located in the three-dimensional folding (essential for many functions) or in the N-terminal (-Nt), with a free amine group (-NH2) at the start of the linear chain of linked amino acids. Protein molecules can have either few or hundreds (common in many organisms) and even thousands of linked amino acids, always in linear form, even if three-dimensional folding later takes place. This focalised research is due to the fact that procedures and chemistry needed to study N-terminal and internal regions are easier and can be developed quicker.

The new method developed by scientists helps to expand studies to C-terminal proteins (-Ct), proteins with a free carboxyl group, COOH, at the end of the linear chain of amino acids. The global and integrated strategy was created by research groups of the University of Ghent, Belgium (Petra van Damme, Kris Gevaert, et. al.) and UAB (Slvia Bronsoms and Francesc Xavier Aviles from the Institute of Biotechnology and Biomedicine and the Department of Biochemistry and Molecular Biology).

In other words, it is now possible to use massive proteomic methods to study maturing processes of proteins which often include breaks in their linear sequence both internally and at their N- and C-termini. Therefore, it will be possible to assess the specific role of these regions in the processes mentioned and in other related functions such as generation, activation and deactivation of hormones, growth factors, neuropeptides, enzymes, membrane receptors and many other proteins with important biological roles. The strategy developed can be carried out ex-vivo (in cell extracts) or in-vivo (by transfection and proteomic analysis). In addition, protein extremes are commonly involved in essential functions, such as locating and directing cells-tissues, triggering the start of three-dimensional folding, joining other biomolecules and macrostructures, post-generation chemical modifications of proteins, etc.

This publication completes previous studies (e.g. on N-terminal regions) carried out by the Flemish research group, leader in the field of general proteomics, as well as by researchers at Universitat Autnoma de Barcelona, leaders in the field of enzymes processing and maturing C-terminal proteins (carboxypeptidases), who recently published an article on the processing of C-terminal peptides in the Journal of Biological Chemistry, by S. Tanco, J. Lorenzo and F. X. Aviles, of UAB, and Ll. Fricker et. al. of Albert Einsten College of Medicine of New York.


Contact: Maria Jesus Delgado
Universitat Autonoma de Barcelona

Related biology news :

1. Protein could heal erectile dysfunction after cancer surgery
2. A balanced protein diet can reduce accumulation of nitrogen on dairy cattle farms by up to 35 percent
3. New function discovered in cancer prevention protein
4. Neural tissue contains imbalanced levels of proteins, U-M study finds
5. MIT chemists design new way to fluorescently label proteins
6. Bodys own proteins may lead the way in global fight against tuberculosis
7. Novel protein essential for successful pregnancy
8. Protein regulates enzyme linked to Alzheimers disease
9. Intracellular express -- why transport protein molecules have brakes
10. Protein power for Jack and the beanstalk
11. Study finds protein that plays key role in early embryonic development
Post Your Comments:
Related Image:
Protein extremes gain relevance in massive proteomic studies
(Date:11/26/2015)... 2015 Research and Markets ( ) ... Sensors - Technology and Patent Infringement Risk Analysis" ... --> Fingerprint sensors using capacitive technology ... fingerprint sensor vendor Idex forecasts an increase of 360% ... devices and of the fingerprint sensor market between 2014 ...
(Date:11/18/2015)... November 18, 2015 --> ... a new market report titled  Gesture Recognition Market - ... 2015 - 2021. According to the report, the global gesture recognition ... anticipated to reach US$29.1 bn by 2021, at a ... North America dominated the global gesture ...
(Date:11/16/2015)... , Nov 16, 2015  Synaptics Inc. (NASDAQ: ... interface solutions, today announced expansion of its TDDI ... touch controller and display driver integration (TDDI) ... smartphones. These new TDDI products add to the ... resolution), TD4302 (WQHD resolution), and TD4322 (FHD resolution) ...
Breaking Biology News(10 mins):
(Date:12/1/2015)... 2015 Dr. Harry Lander , President of Regen, ... Chief Science Officer and recruits five distinguished ... , President of Regen, expands his role to include ... five distinguished scientists to join advisory team --> ... role to include serving as Chief Science ...
(Date:11/30/2015)... ... November 30, 2015 , ... ... physicians, aesthetic practitioners and aesthetics professionals from Central America and abroad for the ... in Panama City, Panama Feb. 17-19, 2016. Testart will present and discuss new ...
(Date:11/30/2015)...  An interventional radiology technique shows promise for helping morbidly ... a study being presented today at the annual meeting of ... (RSNA). --> --> ... radiologists as a way to stop bleeding in emergency situations, ... of treating obesity is new. Mubin Syed , ...
(Date:11/30/2015)... HOLLISTON, Mass. , Nov. 30, 2015 /PRNewswire/ ... HART ), a biotechnology company developing bioengineered ... has received written notification from The NASDAQ Stock ... minimum bid price requirements. The letter noted that ... of HART,s common stock having exceeded $1.00 per ...
Breaking Biology Technology: