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SFB 449:  Structure and Function of Membrane Integral Receptors

Subject Area Biology
Term from 1999 to 2010
Project identifier Deutsche Forschungsgemeinschaft (DFG) - Project number 5483235
 
Biological cells communicate with their surroundings through receptor proteins located in the outer membrane. The receptors bind with their extracellular part highly specifically to endogenous ligands or to drugs and odour molecules, and they even recoguize light. The thus received signal is transduced across the membrane to the interior of the cell where it induces reactions that can be followed by further cascades of reactions. The functional mechanisms of receptors are poorly understood at present. Within the frame of the collaborative research centre 449, receptors are investigated that belong to ligand-dependent channels, are complexed to G-proteins or enzymes (kinases) or are essential for cell-cell recognition. A combination of different methods is employed to elucidate signal transduction across the cell membrane at atomic detail. In 5 projects the receptors under study are produced and purified by molecular biological and biochemical methods and characterized functionally. This is a prerequisite for 11 projects engaged in signal recognition and transduction using spectroscopy and kinetic methods like solid state NMR, infrared-, fluorescence-, and ESR spectroscopy whereas electron microscopy and protein crystallography determine the structures of the respective receptors.
DFG Programme Collaborative Research Centres

Completed projects

Applicant Institution Freie Universität Berlin
Spokesperson Professor Volker Haucke, Ph.D., since 1/2008
Deputy Professor Dr.-Ing. Wolfram Saenger, until 12/2007
 
 

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