Purification of a 20 kDa phosphoprotein from epithelial cells and identification as a myosin light chain Phosphorylation induced by enteropathogenic Escherichia coli and phorbol ester
Por:
Manjarrez-Hernandez H.A., Amess B., Sellers L., Baldwin T.J., Knutton S., Williams P.H., Aitken A.
Publicada:
1 ene 1991
Resumen:
Previous studies on the mechanism of enteropathogenic Escherichia coli (EPEC) infection have revealed an increase in the phosphorylation state of a number of proteins in human laryngeal HEp-2 cells. The most prominent was an acidic phosphoprotein(s) of Mr 20-21 kDa. The present study reports: (a) a simple method for purification of phosphorylated 20 kDa protein: (b) identification of the 20 kDa phosphoprotein as myosin light chain; and (c) that the phorbol ester. TPA, also increased the phosphorylation of the 20 kDa myosin light chain. In contrast to the effects of EPEC, TPA stimulation resulted in the dissociation of myosin from the cytoskeleton to the cytosol. © 1991.
Filiaciones:
Manjarrez-Hernandez H.A.:
Laboratory of Protein Structure, National Institute for Medical Research, Mill Hill, London, NW7 1AA, United Kingdom
Amess B.:
Laboratory of Protein Structure, National Institute for Medical Research, Mill Hill, London, NW7 1AA, United Kingdom
Sellers L.:
Laboratory of Protein Structure, National Institute for Medical Research, Mill Hill, London, NW7 1AA, United Kingdom
Baldwin T.J.:
Department of Genetics, University of Leicester, Leicester, LE1 7RH, United Kingdom
Knutton S.:
Institute of Child Health, University of Birmingham, Birmingham, B16 8ET, United Kingdom
Williams P.H.:
Department of Genetics, University of Leicester, Leicester, LE1 7RH, United Kingdom
Aitken A.:
Laboratory of Protein Structure, National Institute for Medical Research, Mill Hill, London, NW7 1AA, United Kingdom
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