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            Acknowledgments                                       The central acidic domain of MDM2 is critical in inhibition of
            We thank Alejandro Parrales and Swathi V. Iyer for editing the   retinoblastoma-mediated suppression of E2F and cell growth. J Biol Chem
            manuscript and helpful discussion.                    2004;279:53317-22.
                                                               21.  Gu L, Findley HW, Zhou M. MDM2 induces NF-kappaB/p65 expression
            Financial support and sponsorship                     transcriptionally through Sp1-binding sites: a novel, p53-independent role
                                                                  of  MDM2  in  doxorubicin resistance  in  acute lymphoblastic leukemia.
            This project is supported by NIH 1-R01-CA174735-01A1 (T.I.)   Blood 2002;99:3367-75.
            and 5-P30-CA168524-02 (PI: Roy A. Jensen) grants.  22.  Johnson-Pais  T, Degnin C,  Thayer MJ. pRB induces Sp1 activity by
                                                                  relieving inhibition mediated by MDM2.  Proc Natl  Acad Sci U S  A
            Conflicts of interest                                 2001;98:2211-6.
            There are no conflicts of interest.                23.  Riley MF, Lozano G. The many faces of MDM2 binding partners. Genes
                                                                  Cancer 2012;3:226-39.
                                                               24.  Zhu MH, Ni CR, Zhu Z, Li FM, Zhang SM. [Determination of expression
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