TY  - JOUR
A1  - Kleinschmidt, Albrecht
A1  - Rüter, H.
A1  - Hellmann, W.
A1  - Zahn, Rudolf K.
A1  - Docter, Annesuse
A1  - Zimmermann, E.
A1  - Rübner, Horst
A1  - Al Ajwady, A. M.
T1  - Über Desoxyribonucleinsäure-Molekeln in Protein-Mischfilmen
T2  - Zeitschrift für Naturforschung, B
N2  - A nucleoprotein of a vitrous consistency was extracted from the gonads of the coalfish (Gadus virens).
The preparation of deoxyribonucleic acid (DNA) from this nucleoprotein and from staphylococci is described. Both of these different kinds of DNA have been mixed with bovine serum albumin or cytochrom c respectively to produce solutions which subsequently were spread onto the Langmuir trough under defined conditions.
After transfer of aliquots from the surface monolayers to carbon support films the preparations were examined with the electron microscope. The micrographs show threads of various lengths, partly stretched, partly folded in loops, consisting of DNA molecules embedded in a protein envelope.
Measurements and calculations of 5900 particles of the complex of Gadus virens-DNA-Albumin, with relatively short threads show a distribution of discontinuous character. If length is plotted against number then it occurs that there are maxima of different lengths of threads. The abscissae of these maxima obey the ratio 1 : 2 : 4 : 8. This holds for longer threads too the maxima of which, however, have smaller ordinate values.
Y1  - 2014
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/69845
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-698452
SN  - 1865-7117
SN  - 0932-0776
VL  - 14.1959
IS  - 12
SP  - 770
EP  - 779
PB  - Verlag der Zeitschrift für Naturforschung
CY  - Tübingen
ER  -