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Joachim Krebs

Joachim Krebs

Max Planck Institute for Biophysical Chemistry, Germany

Title: Calcium, Calmodulin and the Plasma Membrane Calcium Pump


Prof. RJP Williams at Oxford, UK. In 1977 he accepted a staff position at the Institute of Biochemistry at the Swiss Federal Institute of Technology (ETH) in Zürich, Switzerland. He was lecturing different courses in biochemistry and biophysics, and was leading a Lab working on the structure-function relationship of calcium-binding and calcium-transporting proteins. After retirement from the ETH he continued his research as a consultant of the Lab of Prof. Christian Griesinger at the MPI in Göttingen, Germany. He has authored, co-authored and edited numerous articles in international journals. Recently he edited a book on “Calcium: A matter of life or death” published in 2007. He is at the Editorial Board of BBA Molecular Cell Research and Archives of Biochemistry and Biophysics.


Calcium is the third most abundant metal in nature and a versatile carrier of many signals within and outside the cell. Due to its peculiar coordination chemistry calcium is highly flexible as a ligand which enables it to regulate many important aspects of cellular activity. Calcium can fulfill its many different functions insite and out of the cell due to an integrated network of calcium channels, exchangers and pumps. In this presentation I will give an overview on our studies of calcium binding proteins, their interaction with protein targets resulting in specific modulations  of protein-protein interactions. This will be demonstrated by the interaction of the calcium binding protein calmodulin with one of its targets, the plasma membrane calcium pump, an important regulator of calcium homeostasis of the cell.