Navigation Links
FSU researchers determine a critical factor in workings of proteins

Scientists know that a better understanding of how proteins bond could lead to more effective treatments for genetic disorders and other life-threatening conditions.

Now, a pair of Florida State University researchers' new theory has been proven to accurately predict the association rate for proteins. Their theory is outlined in the February issue of the scientific journal Structure.

"A protein can have multiple targets or can be targeted by multiple molecules," said Professor Huan-Xiang Zhou, who serves on the faculty of FSU's School of Computational Science and department of physics. "Rapid association between proteins is crucial in a wide array of biological processes, such as the utilization of and defense against toxins; the activation of receptor proteins on cell membranes by growth hormones; and the regulation of actin polymerization, which influences the physical structure of living cells. The association rate thus plays a critical role in the overall health of the organism."

Mutations are one factor that can disrupt quick association between proteins and lead to disease, he said.

"For example, Wiskott-Aldrich syndrome, a pediatric genetic disorder characterized by eczema, immune deficiencies and low blood-platelet counts, can be traced to mutations on the Wiskott-Aldrich syndrome protein," Zhou said. "Normally, fast association of the protein with other biomolecules is critical for the creation of proper cell structures. The failure of the protein to associate quickly, then, is the root cause of the condition."

In their Structure paper, Zhou and graduate student Razmi Alsallaq put forth a new theory that has been proven to accurately predict the association rate for proteins by developing a theoretical model for the association process. A central component of the model is the transition state, a phase that two associating proteins go through before finally becoming a specific complex. The rate prediction is bro ken into two parts: how much the rate would be if the proteins find each other purely through random motion, and how much electrical attraction increases the rate.

"This theory opens numerous opportunities for further study," Zhou said. "For example, we now can begin to uncover the molecular bases of large variations in association rate among proteins. It also might be possible to design proteins with the desired association rate."

Attila Szabo, chief of the Theoretical Biophysical Chemistry section of the National Institutes of Health, described the Structure paper as "the most comprehensive investigation yet conducted of protein-protein association rate. It provides convincing evidence that the remarkable simplification of the calculation of association rates between proteins, proposed by Zhou and coworkers, really works."

Source:Florida State University

Related biology news :

1. NYU researchers simulate molecular biological clock
2. Vital step in cellular migration described by UCSD medical researchers
3. ASU researchers finds novel chemistry at work to provide parrots vibrant red colors
4. UCSD researchers maintain stem cells without contaminated animal feeder layers
5. Why do insects stop breathing? To avoid damage from too much oxygen, say researchers
6. New protein discovered by Hebrew University researchers
7. First real-time view of developing neurons reveals surprises, say Stanford researchers
8. Agilent Technologies releases automated literature search tool for biology researchers
9. Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin
10. Yale researchers identify molecule for detecting parasitic infection in humans
11. US life expectancy about to decline, researchers say

Post Your Comments:

(Date:11/18/2015)... , Nov. 18, 2015  As new scientific ... children, doctors and other healthcare providers face challenges in ... families and patients. In addition, as more children continue ... a patient,s adulthood and old age. John ... The Children,s Hospital of Philadelphia (CHOP) . ...
(Date:11/17/2015)... Paris , qui s,est tenu ... Paris , qui s,est tenu du 17 au ... l,innovation biométrique, a inventé le premier scanner couplé, qui ... même surface de balayage. Jusqu,ici, deux scanners étaient nécessaires, ... digitales. Désormais, un seul scanner est en mesure de ...
(Date:11/16/2015)... Nov 16, 2015  Synaptics Inc. (NASDAQ: ... solutions, today announced expansion of its TDDI product ... touch controller and display driver integration (TDDI) solutions ... These new TDDI products add to the previously-announced ... TD4302 (WQHD resolution), and TD4322 (FHD resolution) solutions. ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... 25, 2015 Orexigen® Therapeutics, Inc. (Nasdaq: ... a fireside chat discussion at the Piper Jaffray 27th ... . The discussion is scheduled for Wednesday, December 2, ... .  A replay will be available for 14 days ... , Julie NormartVP, Corporate Communications and Business Development , ...
(Date:11/24/2015)... ... , ... The United States Golf Association (USGA) today announced Dr. Bruce Clarke, ... annually since 1961, the USGA Green Section Award recognizes an individual’s distinguished service to ... Clarke, of Iselin, N.J., is an extension specialist of turfgrass pathology in the department ...
(Date:11/24/2015)... , ... November 24, 2015 , ... ... healthy metabolism. But unless it is bound to proteins, copper is also toxic ... (NIH), researchers at Worcester Polytechnic Institute (WPI) will conduct a systematic study of ...
(Date:11/24/2015)... , November 24, 2015 ... market research report "Oligonucleotide Synthesis Market by Product & ... Gene Synthesis, Diagnostic, DNA, RNAi), End-User (Research, Pharmaceutical & ... by MarketsandMarkets, the market is expected to reach USD ... 2015, at a CAGR of 10.1% during the forecast ...
Breaking Biology Technology: