TY - JOUR A1 - Gehatia, Matatiahu T1 - Bestimmung des Molekulargewichtes der 20-β-Hydroxy-steroid-dehydrogenase T2 - Zeitschrift für Naturforschung, B N2 - The enzyme 20-β-Hydroxy-steroid-dehydrogenase obtained from the culture of Streptomyces hydrogenans and dissolved in 0.05 M Tris puffer, pH 7.3, has been investigated by means of a ultracentrifuge at 20 °C. The sedimentation- as well as the diffusion-coefficients obtained from various solutions at different concentrations were extrapolated to the concentration c = 0. The resulting zero-value for the sedimentation coefficient is s0 = 6.64 s and for the diffusion coefficient is D0 = 5.51 × 10-7 cm2/sec. Supposing the partial specific volume of the enzyme under consideration analogously to other similar proteins is V+=0.749 ml/g, the molecular weight has been estimated as M = 118 400. Y1 - 2014 UR - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/69890 UR - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-698903 SN - 1865-7117 SN - 0932-0776 VL - 17 IS - 7 SP - 432 EP - 436 PB - Verlag der Zeitschrift für Naturforschung CY - Tübingen ER -