Abstract
Analysis of in vivo phosphorylation of mouse liver ribosomal proteins was performed by two-dimensional polyacrylamide gel electrophoresis following 32P-injection. Our method is special and differs from other eukaryotic systems reported in that all proteins separated on the first dimension gel are completely solubilized, moving quantitatively to the second dimension gel. Only ribosomes from polysomes were used, ensuring analysis of ribosomes actively engaged in protein synthesis. We resolved sixty-five distinct proteins from ribosomes from membrane bound or free polysomes. In both cases radioautography revealed similar labeled patterns with one highly phosphorylated ribosomal protein and five marginally labeled spots.
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Kabat, D., Biochemistry 9, 4160 (1970).
Loeb, J. E. and Blat, C., FEBS Letters 10, 105 (1970).
Correze, C., Pinell, P., and Nunez, J., FEBS Letters 23, 87 (1972).
Barela, T. D. and Kizer, D. E., Biochim. Biophys. Acta 335, 218 (1974).
Gressner, A. M. and Wool, I. G., J. Biol. Chem. 249, 6917 (1974).
Eil, C. and Wool, I. G., Biochem. Biophys. Res. Comm. 43, 1001 (1971).
Kabat, D., Biochemistry 10, 197 (1971).
Li, C. and Amos, H., Biochem. Biophys. Res. Comm. 45, 1398 (1971).
Majumder, G. C. and Turkington, R. W., J. Biol. Chem. 247, 7207 (1972).
Stahl, J., Welfle, H., and Bielka, H., FEBS Letters 26, 233 (1972).
Tao, M., Salas, M. L., and Lipmann, F., Proc. Nat. Acad. Sci. U.S.A. 67, 408 (1970).
Fontana, J. A., Picciano, D., and Lovenberg, W., Biochem. Biophys. Res. Comm. 49, 1225 (1972).
Jergil, B., Eur. J. Biochem. 28, 546 (1972).
Bitte, L. and Kabat, D., J. Biol. Chem. 247, 5345 (1972).
Traugh, J. A. and Traut, R. R., Biochemistry 11, 2503 (1972).
Walton, G. M., Gill, G. N., Abrass, I. B., and Garren, L. D., Proc. Nat. Acad. Sci. U.S.A. 68, 880 (1971).
Pierre, M., Creuzet, C., and Loeb, J. E., FEBS Letters 45, 88 (1974).
Prestayko, A. W., Olson, M., and Busch, H., FEBS Letters 44, 131 (1974).
Blat, C. and Loeb, J. E., FEBS Letters 18, 124 (1971).
Hoffman, W. L. and Ilan, J., Biochim. Biophys. Acta 366, 199 (1974).
Blobel, G. and Sabatini, D. D., J. Cell. Biol. 45, 130 (1970).
Hardy, S. J., Kurland, C. G., Voynow, P., and Mora, G., Biochemistry 8, 2897 (1969).
Hoffman, W. L. and Ilan, J., Anal. Biochem., submitted (1975).
Kaltschmidt, E. and Wittmann, H. G., Proc. Nat. Acad. Sci. U.S.A. 67, 1276 (1970).
Olsnes, S., Biochim. Biophys. Acta 232, 705 (1971).
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Hoffman, W.L., Ilan, J. Analysis by two-dimensional polyacrylamide gel electrophoresis of the in vivo phosphorylation of ribosomal proteins derived from free and membrane-bound polysomes. Molecular Biology Reports 2, 219–224 (1975). https://doi.org/10.1007/BF00356991
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DOI: https://doi.org/10.1007/BF00356991