IBG-2 Seminar: Andreas Meyer
Molecular and cellular regulation of glutathione homeostasis and
implications for thiol-based redox signalling
Prof. Dr. Andreas Meyer, University of Bonn,
INRES - Chemical Signalling
Abstract:
Changes in redox status are a widespread feature of metabolic adaptation
in prokaryotic and eukaryotic cells, but the signalling mechanisms
underlying the adaptive responses are not well understood. While stress
situations can cause pronounced oxidative stress, adaptive responses
reconstituting highly reducing conditions in plasmatic compartments are
essential for survival. The tripeptide glutathione is the major
non-protein thiol in most organisms, including plants and is essential
for numerous molecular processes related to detoxification and redox
homeostasis. With its ability to change between the reduced form
glutathione (GSH) and the oxidised form glutathione disulfide (GSSG)
glutathione is a key redox buffer. The interaction of proteins with
glutaredoxins enables redox equilibration of target proteins with the
local glutathione redox potential and thus places glutathione as a
transducer for integration of environmental information. The
presentation will address molecular processes responsible for
maintaining cellular redox homeostasis and the role of glutathione in
redox signalling.
Contact: Uwe Rascher