D-type cyclins repress transcriptional activation by the v-Myb but not the c-Myb DNA-binding domain
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منابع مشابه
D-type cyclins repress transcriptional activation by the v-Myb but not the c-Myb DNA-binding domain.
The v-Myb DNA-binding domain differs from that of c-Myb mainly by deletion of the first of three repeats. This truncation correlates with efficient oncogenic transformation and a decrease in DNA-binding activity. Here we demonstrate that the D-type cyclins, cyclin D1 and D2 in particular, specifically inhibit transcription when activated through the v-Myb DNA-binding domain, but not the c-Myb D...
متن کاملHistone H3 tail positioning and acetylation by the c-Myb but not the v-Myb DNA-binding SANT domain.
The c-Myb transcription factor coordinates proliferation and differentiation of hematopoietic precursor cells. Myb has three consecutive N-terminal SANT-type repeat domains (R1, R2, R3), two of which (R2, R3) form the DNA-binding domain (DBD). Three amino acid substitutions in R2 alter the way Myb regulates genes and determine the leukemogenicity of the retrovirally transduced v-Myb oncogene. T...
متن کاملDifferential transcriptional activation by v-myb and c-myb in animal cells and Saccharomyces cerevisiae.
The v-myb oncogene and its cellular homolog c-myb encode sequence-specific DNA-binding proteins which regulate transcription from promoters containing Myb-binding sites in animal cells. We have developed a Saccharomyces cerevisiae system to assay transcriptional activation by v-Myb and c-Myb. In yeast strains containing integrated reporter genes, activation was strictly dependent upon both the ...
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The v-Myb protein encoded by avian myeloblastosis virus causes oncogenic transformation of monoblastic cells committed to the monocyte/macrophage lineage. v-Myb is a doubly truncated form of its normal cellular counterpart, c-Myb. In addition to its N- and C-terminal deletions, v-Myb contains a number of amino acid substitutions relative to c-Myb. We have previously shown that neither overexpre...
متن کاملPhosphorylation-dependent down-regulation of c-Myb DNA binding is abrogated by a point mutation in the v-myb oncogene.
The viral Myb (v-Myb) oncoprotein of the avian myeloblastosis virus (AMV) is an activated form of the cellular transcription factor c-Myb causing acute monoblastic leukemia in chicken. Oncogenic v-Myb alterations include N- and C-terminal deletions as well as point mutations. Whereas truncations in Myb cause loss of various protein modifications, none of the point mutations in v-Myb has been di...
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ژورنال
عنوان ژورنال: The EMBO Journal
سال: 1998
ISSN: 1460-2075
DOI: 10.1093/emboj/17.1.255