Automated description from the Alliance of Genome Resources
Exhibits several functions, including RNA polymerase II CTD heptapeptide repeat kinase activity; nucleic acid binding activity; and protein kinase binding activity. Involved in positive regulation of histone H2B ubiquitination and positive regulation of histone phosphorylation. Localizes to the cyclin/CDK positive transcription elongation factor complex. Orthologous to human CDK9 (cyclin dependent kinase 9).