Ithaisa Medina on Muck Rack

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Fine-tuning Rpb4 phosphorylation modulates Rpb4/7 stoichiometry within yeast RNA polymerase II and regulates gene expression

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By Antonio Jordán-Pla, Araceli Gonzalez-Jimenez, Ithaisa Medina, Manuel Jesus Alfonso
| biorxiv.org
Abstract RNA polymerase II (RNAPII) consists of 12 subunits, including Rpb4 and Rpb7, which form a heterodimeric stalk domain. In yeast, assembly of Rpb4/7 with the 10-subunit "core" is substoichiometric. Aside from its role in transcription, Rpb4/7 also binds to mRNAs co-transcriptionally (mRNA imprinting), exits the nucleus together with the mRNA, and modulates subsequent cytoplasmic processes like translation and degradation.
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