The complete DNA sequence of the gene cluster coding for the microginin synthetase of the cyanobacterium Microcystis aeruginosa has been identified and sequenced for the first time. The microginin synthetase is a large multi-enzyme complex which catalyzes the microginin, a small linear lipopeptide belonging to the group of non-ribosomal synthesized peptides. <br><br> Microginins are synthesized by various species of cyanobacteria (“blue-green algae”) in diverse structure variants. Mircroginins represent an interesting group of unusual peptides in view of medical application as they are known to have inhibitory effects on the Angiotensin-Converting- Enzyme (ACE). Thus, microginins are potential ACE-inhibitors and represent important drug candidates to treat hypertension and associated diseases such as chronic heart failure and diabetic nephropathy.<br><br> The new identified DNA-sequence of the microginin synthetase gene cluster can be used to identify homologue gene cluster in other cyanobacteria spe-cies and as a matter of fact for the detection of new microginin variants or microginin-like structures. Further on, novel microginin variants can be gen-erated by gene biocombinatoric experiments (gene shuffling) with the objec-tive to optimize the ACE-inhibitory effect.
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Low-vibration sample holder for cryo fluorescence microscopic applications
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Variable number of threads in braiding machines
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In an experiment at the Department of Energy's SLAC National Accelerator Laboratory, scientists precisely measured the temperature and structure of aluminum as...
The IPH presents a solution at HANNOVER MESSE 2015 to make ship traffic more reliable while decreasing the maintenance costs at the same time. In cooperation with project partners, the research institute from Hannover, Germany, has developed a sensor system which continuously monitors the condition of the marine gearbox, thus preventing breakdowns. Special feature: the monitoring system works wirelessly and energy-autonomously. The required electrical power is generated where it is needed – directly at the sensor.
As well as cars need to be certified regularly (in Germany by the TÜV – Technical Inspection Association), ships need to be inspected – if the powertrain stops...
When an earthquake hits, the faster first responders can get to an impacted area, the more likely infrastructure--and lives--can be saved.
The Atlantic overturning is one of Earth’s most important heat transport systems, pumping warm water northwards and cold water southwards. Also known as the Gulf Stream system, it is responsible for the mild climate in northwestern Europe.
Scientists now found evidence for a slowdown of the overturning – multiple lines of observation suggest that in recent decades, the current system has been...
Because they are regularly subjected to heavy vehicle traffic, emissions, moisture and salt, above- and underground parking garages, as well as bridges, frequently experience large areas of corrosion. Most inspection systems to date have only been capable of inspecting smaller surface areas.
From April 13 to April 17 at the Hannover Messe (hall 2, exhibit booth C16), engineers from the Fraunhofer Institute for Nondestructive Testing IZFP will be...
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