The synthesis of mRNA by RNA polymerase II (RNAPII) is a multistep process that is regulated by different mechanisms. One important aspect of transcriptional regulation is phosphorylation of components of the transcription apparatus. The phosphorylation state of RNAPII carboxy-terminal domain (CTD) is controlled by a variety of protein kinases and at least one protein phosphatase. We discuss emerging genetic and biochemical evidence that points to a role of these factors not only in transcription initiation but also in elongation and possibly termination. In addition, we review phosphorylation events involving some of the general transcription factors (GTFs) and other regulatory proteins. As an interesting example, we describe the modulation of transcription associated kinases and phosphatase by the HIV Tat protein. We focus on bringing together recent findings and propose a revised model for the RNAPII phosphorylation cycle.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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