Enzyme for plastics production from renewable raw materials
Beguiling scents, sober facts: scents emanating from plants are almost always monoterpenes and monoterpene alcohols, the essential oils of plants are natural hydrocarbon compounds. For instant, geraniol is the tempting fragrant alcohol of roses.
Crystals of linalool dehydratase/isomerase in a drop of protein solution
Sina Weidenweber, Max Planck-Institute of Biophysics, Frankfurt
Researchers of the Max Planck Institute for Marine Microbiology in Bremen have published in 2010 the discovery of an enzyme, which converts the rose-scented geraniol in the coriander-scented coriandrol ((S) -linalool) and further in the hop-scented myrcene.
However, this enzyme, the linalool dehydratase/isomerase is also capable of forning butadiene from natural raw materials, such as fermentation products. Butadiene is a key compound in the manufacturing process of plastics. Now, the researchers were able to elucidate the exact three-dimensional structure of the enzyme and the binding sites of geraniol and myrcene on the enzyme, an important milestone on the way from the petrochemical industry towards the energy-economic use of natural resources.
Butadiene and isoprene: important intermediates in plastics production
Butadiene and isoprene are intermediates for nylon production, high-melting plastics (ABS polymers) and rubber products. So far butadiene is produced elaborately by cracking of petroleum. Therefore, the chemical industry has a great interest in energy-economic alternatives to butadiene synthesis.
Over 10 million tons of butadiene and isoprene are annually produced under considerable energy consumption from fossil fuels, a market of over 15 billion euros.
A few years ago, high oil prices and increasing demand triggered an intensive search for alternative production methods. The switch to renewable raw materials and an energy-poor production method requires biocatalysts, and the catalytic properties of linalool dehydratase/isomerase are ideal for this task. Based on the discovery of the enzyme by Bremer researchers in 2010, a considerable number of patent applications and patents have been published that describe the use of this enzyme in the production of butadiene and isoprene.
Discovery of the substrate binding on the enzyme
To make effective use of the enzyme in the industry, you have to know the internal architecture and how and where the actual reaction takes place. Now Sina Weiden Weber and Ulrich Ermler from the Max Planck-Institute of Biophysics in Frankfurt and Robert Marmulla and Jens Harder from the Max Planck-Institute for Marine Microbiology in Bremen succeeded in the elucidation of the molecular structure of the enzyme. The enzyme is composed of five identical subunits and has a unique binding site for monoterpene alcohols.
"In recent years it was very gratifying to see the rapid use of our results from basic research in applied industrial research. The linalool dehydratase/isomerase structure, the precise knowledge of geraniol and myrcene-binding sites and the insight into the catalytic mechanisms will now enable industrial companies to optimize this actually monoterpenes degrading enzyme for the biotechnological production of butadiene and isoprene. "says Jens Harder.
Weidenweber, Sina; Marmulla, Robert; Ermler, Ulrich; Harder, Jens
X-ray structure of linalool dehydratase/isomerase from Castellaniella defragrans reveals enzymatic alkene synthesis.
FEBS Letters 2016, doi 10.1002/1873-3468.12165
Prof. Dr. Jens Harder
Max Planck-Institute for Marine Microbiology, Bremen
Telefon: 0421 2028 750
PD Dr. Ulrich Ermler
Max Planck-Institute of Biophysics, Frankfurt
Telephon: 069 6303 1054
or the press office:
Max Planck-Institute for Marine Microbiology:
Dr. Manfred Schlösser
Telefon: 0421 2028 - 704
Fax: 0421 2028 - 790
Dr. Fanni Aspetsberger
Telefon: 0421 2028 - 947
Dr. Manfred Schloesser | Max-Planck-Institut für marine Mikrobiologie
New application for acoustics helps estimate marine life populations
16.01.2018 | University of California - San Diego
Unexpected environmental source of methane discovered
16.01.2018 | University of Washington Health Sciences/UW Medicine
What enables electrons to be transferred swiftly, for example during photosynthesis? An interdisciplinary team of researchers has worked out the details of how...
For the first time, scientists have precisely measured the effective electrical charge of a single molecule in solution. This fundamental insight of an SNSF Professor could also pave the way for future medical diagnostics.
Electrical charge is one of the key properties that allows molecules to interact. Life itself depends on this phenomenon: many biological processes involve...
At the JEC World Composite Show in Paris in March 2018, the Fraunhofer Institute for Laser Technology ILT will be focusing on the latest trends and innovations in laser machining of composites. Among other things, researchers at the booth shared with the Aachen Center for Integrative Lightweight Production (AZL) will demonstrate how lasers can be used for joining, structuring, cutting and drilling composite materials.
No other industry has attracted as much public attention to composite materials as the automotive industry, which along with the aerospace industry is a driver...
Scientists at Tokyo Institute of Technology (Tokyo Tech) and Tohoku University have developed high-quality GFO epitaxial films and systematically investigated their ferroelectric and ferromagnetic properties. They also demonstrated the room-temperature magnetocapacitance effects of these GFO thin films.
Multiferroic materials show magnetically driven ferroelectricity. They are attracting increasing attention because of their fascinating properties such as...
The oceans are the largest global heat reservoir. As a result of man-made global warming, the temperature in the global climate system increases; around 90% of...
08.01.2018 | Event News
11.12.2017 | Event News
08.12.2017 | Event News
17.01.2018 | Ecology, The Environment and Conservation
17.01.2018 | Physics and Astronomy
17.01.2018 | Awards Funding