Carboxyl-terminal repeat domain (CTD) of the largest subunit Rpb1 of RNA polymerace II is essential for transcription regulation. Heptapeptide repeat of CTD of Rpb1 is phosphorylated by carboxyl-terminal repeat domain kinase (CTDK-I), composed of CTK1, CTK2 and CTK3, in order to regulate transcription and transcription associated processes. The yeast specific protein CTK3 binds to cyclin CTK2 to form a heterodimer serving as a regulational factor to control CTK1 activity by binding to CTK1. Structural information of CTK2-CTK3 complex is yet to be elucidated. Here, we report the co-expression of CTK2-CTK3 complex from Saccharomyces cerevisiae with N-terminal His6-tag in CTK3 in Escherichia coli (E. coli), purification of the complex by four chromatographic steps and crystallization of the complex as well as the diffraction data collection and processing. This study provides some essential information and a guide for structural and functional study of CTK2-CTK3 complex and CTDK-I in the future.
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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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