Abstract
Poly(A) containing ribonucleoprotein particles were prepared from rat liver nuclei and polyribosomes. The particles have sedimentation coefficients of 14 S and 9 S, respectively. In Cs2SO4 density gradients the particles banded at densities of 1.28–1.29 g cm-3. Both nuclear and polyribosomal poly(A)-RNP contain in addition to some minor polypeptides, two main polypeptides having molecular weights of 63 000 and 90 000 dalton, respectively indistinguishable from each other according to their electrophoretic mobilities.
Similar content being viewed by others
Abbreviations
- STKM:
-
0.25 M sucrose, 0.05 M Tris-HCl, pH 7.2, 0.025 M KCl, 0.005 M MgCl2
- TKM:
-
0.05 M Tris-HCl, pH 7.5, 0.025 M KCl, 0.005 M MgCl2
- STM II:
-
0.1 M NaCl, 0.01 M Tris-HCl, pH 8, 0.001 M MgCl2
- DTT:
-
dithiothreitol
- SDS:
-
sodium dodecylsulphate
References
Lee, S. Y., Mendecki, J., and Brawerman, G., Proc. Nat. Acad. Sci. U.S.A. 68, 1321 (1971).
Greenberg, J. R. and Perry, R. P., J. Mol. Biol. 72, 91 (1972).
Samarina, O. P., Aitkhozhina, N. A., and Besson, J., Mol. Biol. Reports 1, 193 (1973).
Quinlan, T. J., Billings, P. B., Martin, T. E., Proc. Nat. Acad. Sci. U.S.A. 71, 2632 (1974).
Molnar, J. and Samarina, O. P., Mol. Biol. Reports 2, 1 (1975).
Blobel, G., Proc. Nat. Acad. Sci. U.S.A. 70, 924 (1973).
Kish, V. M. and Pederson, T., J. Mol. Biol. 95, 227 (1975).
Molnár, J. and Samarina, O. P., Acta Biochim. Biophys. Acad. Sci. Hung. in press.
Blobel, G. and Potter, R., J. Mol. Biol. 26, 279 (1967).
Shoeness, D., Puckett, L., and Darnell, J. E., Proc. Nat. Acad. Sci. U.S.A. 72, 1077 (1975).
Komáromy, L., Molnár, J., and Tigyi, A., Acta Biochim. Biophys. Acad. Sci. Hung. 10, 207 (1975).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Tomcsanyi, T., Molnar, J. & Tigyi, A. Nuclear and polyribosomal ribonucleoprotein particles containing poly(A) in rat liver cells. Mol Biol Rep 3, 99–104 (1976). https://doi.org/10.1007/BF00423222
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00423222