Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New real-time Hsp90 high throughput screening method using fluorescence resonance energy transfer (FRET)

26.04.2010
The molecular chaperone heat shock protein 90 (Hsp90) couples ATP hydrolysis

to conformational changes driving a reaction cycle that is required for substrate activation. Recent structural analysis provided snapshots of the open and closed states of Hsp90, which mark the starting and end points of these changes. To directly track structural rearrangements in Hsp90, fluorophores were attached

to engineered cysteine residues in the N or M domains of Hsp90. The chosen amino acid positions are surface-exposed and not directly involved in Hsp90 function. In addition, a double-cysteine variant was created (Figure). The structural changes in Hsp90 can be tightly regulated by co-chaperones that are completely inhibited by Sti1 or accelerated by Aha1. Aha1 induces Hsp90 rearrangements that speed up the conformational cycle even in the absence of nucleotide. The comprehensive analysis of the Hsp90 cycle defines a controlled progression through distinct intermediates that can be modulated by conformation-sensitive co-chaperones. This new assay system allows high-sensitivity real-time detection and kinetic analysis of motions of Hsp90 in response to nucleotides or co-chaperones by fluorescence resonance energy transfer (FRET).

Further Information: PDF

Bayerische Patentallianz GmbH
Phone: +49 89 5480177-0

Contact
Peer Biskup

info@technologieallianz.de | TechnologieAllianz e.V.
Further information:
http://www.technologieallianz.de/angebote.php?sort=sag&id=1508&lang=en
http://www.technologieallianz.de

More articles from Technology Offerings:

nachricht New Lithium Salts of Pentafluorophenylamide Anions as Electrolytes in Lithium Ionic Batteries
18.04.2017 | TechnologieAllianz e.V.

nachricht Gratings on glass surfaces
28.03.2017 | TechnologieAllianz e.V.

All articles from Technology Offerings >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Long-lived storage of a photonic qubit for worldwide teleportation

MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.

Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...

Im Focus: Electromagnetic water cloak eliminates drag and wake

Detailed calculations show water cloaks are feasible with today's technology

Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...

Im Focus: Scientists channel graphene to understand filtration and ion transport into cells

Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.

To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...

Im Focus: Towards data storage at the single molecule level

The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.

Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...

Im Focus: Successful Mechanical Testing of Nanowires

With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong

Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

See, understand and experience the work of the future

11.12.2017 | Event News

Innovative strategies to tackle parasitic worms

08.12.2017 | Event News

AKL’18: The opportunities and challenges of digitalization in the laser industry

07.12.2017 | Event News

 
Latest News

A whole-body approach to understanding chemosensory cells

13.12.2017 | Health and Medicine

Water without windows: Capturing water vapor inside an electron microscope

13.12.2017 | Physics and Astronomy

Cellular Self-Digestion Process Triggers Autoimmune Disease

13.12.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>