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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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The promyelocytic leukemia zinc finger (PLZF) protein binds DNA in a high molecular weight complex associated with cdc2 kinase.

A binding site selection from a CpG island library for the promyelocytic leukemia zinc finger protein (PLZF) identified two high affinity PLZF binding sites. These sequences also bound RARalpha/PLZF, a fusion protein formed in chromosomal translocation t(11;17)(q23;q21) associated with acute promyelocytic leukemia. PLZF bound DNA as a slowly migrating complex with an estimated mol. wt of 600 kDa whose formation was dependent on the POZ/dimerization domain of PLZF. The PLZF-DNA complex was unable to form in the presence of cdc2 antibodies. A PLZF-cdc2 interaction was further demonstrated by co-immunoprecipitation and a biotin-streptavidin pull-down assay. PLZF is a phosphoprotein and immunoprecipi-tates with a cdc2-like kinase activity. The PLZF-DNA complex was abolished with the addition of a phosphatase. These studies suggest that the activity of PLZF, a regulator of the cell cycle, may be modulated by cell cycle proteins. RARalpha/PLZF did not complex with cdc2, this potentially contributing to its aberrant transcriptional properties and potential role in leukemo-genesis.[1]

References

  1. The promyelocytic leukemia zinc finger (PLZF) protein binds DNA in a high molecular weight complex associated with cdc2 kinase. Ball, H.J., Melnick, A., Shaknovich, R., Kohanski, R.A., Licht, J.D. Nucleic Acids Res. (1999) [Pubmed]
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