- Preliminary X-ray crystallographic study of malate dehydrogenases from the thermoacidophilic Archaebacteria Thermoplasma acidophilum and Sulfolobus acidocaldarius. Stezowski, J.J., Englmaier, R., Galdiga, C., Hartl, T., Rommel, I., Dauter, Z., Görisch, H., Grossebüter, W., Wilson, K., Musil, D. J. Mol. Biol. (1989)