... Research Scholar of the ThailandResearch Fund. We would like to thank Prof. Steve C.Fry, Institute of Cell and Molecular Biology, Univer-sity of Edinburgh, Edinburgh, UK, and Dr AlbertSchulte, ... Center, Nakhon Ratchasima, Thailand3 Department of Biochemistry and Center for Protein Structure and Function, Faculty of Science, Mahidol University, Bangkok, Thailand4 Max Planck Institut fu¨r ... (Fig. 4A). In the case of theE315Q mutant, an additional faint band was alsoseen at an Mr of 43 000. This band appeared as adegradation product during freezing and thawing of the protein that...