Bede Portz

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The carboxy-terminal domain (CTD) of the RNA polymerase II (Pol II) large subunit cycles through phosphorylation states that correlate with progression through the transcription cycle and regulate nascent mRNA processing. Structural analyses of yeast and mammalian CTD are hampered by their repetitive sequences. Here we identify a region of the Drosophila(More)
RNA polymerase II contains a repetitive, intrinsically disordered, C-terminal domain (CTD) composed of heptads of the consensus sequence YSPTSPS. The CTD is heavily phosphorylated and serves as a scaffold, interacting with factors involved in transcription initiation, elongation and termination, RNA processing and chromatin modification. Despite being a(More)
The positive transcription elongation factor b (P-TEFb) promotes transcription elongation through phosphorylation of the RNA polymerase II C-terminal domain. This process is not well understood, partly due to difficulties in determining the specificity of P-TEFb toward the various heptad repeat motifs within the C-terminal domain. A simple assay using mass(More)
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