Isolation and characterization of phosphoprotein pp 105 from simian virus 
40-transformed mouse fibroblasts

Pfeifle, J; Anderer, FA

doi:0.1016/0167-4889(83)90120-9

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Isolation and characterization of phosphoprotein pp 105 from simian virus 40-transformed mouse fibroblasts

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Pfeifle, J
Anderer Group, Friedrich Miescher Laboratory, Max Planck Society;

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Anderer, FA
Anderer Group, Friedrich Miescher Laboratory, Max Planck Society;

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引用

Pfeifle, J., & Anderer, F. (1983). Isolation and characterization of phosphoprotein pp 105 from simian virus 40-transformed mouse fibroblasts. Biochimica et Biophysica Acta: Molecular Cell Research, 762(1), 86-93. doi:0.1016/0167-4889(83)90120-9.

引用: https://hdl.handle.net/21.11116/0000-000F-4308-D

要旨

Investigation of the cellular distribution of a 105 kDa phosphoprotein (pp 105) in transformed mouse fibroblasts, showed that only a minor amount was located on the surface of logarithmically grown suspension cells. More than 90% of total pp 105 was contained in the cytosolic fraction representing about 0.2% of total cytosolic proteins. Surface and cytosolic pp 105 had identical phosphopeptide patterns. Cytosolic pp 105 was highly purified by ammonium sulfate precipitation followed by three chromatographic steps and gel electrophoresis. The purified pp 105 was capable of weak autophosphorylation. In the stationary growth phase of suspension cells, the amount of pp 105 detectable by endogenous phosphorylation was only 10-15% of that observed during logarithmic growth. pp 105 was also detected in normal mouse tissue and its distribution determined.