Cyclin-dependent kinase 9

Cyclin-dependent kinase 9 or CDK9 is a cyclin-dependent kinase associated with P-TEFb.

Function

The protein encoded by this gene is a member of the cyclin-dependent kinase (CDK) family. CDK family members are highly similar to the gene products of S. cerevisiae cdc28, and S. pombe cdc2, and known as important cell cycle regulators. This kinase was found to be a component of the multiprotein complex TAK/P-TEFb, which is an elongation factor for RNA polymerase II-directed transcription and functions by phosphorylating the C-terminal domain of the largest subunit of RNA polymerase II. This protein forms a complex with and is regulated by its regulatory subunit cyclin T or cyclin K. HIV-1 Tat protein was found to interact with this protein and cyclin T, which suggested a possible involvement of this protein in AIDS.

CDK9 is also known to associate with other proteins such as TRAF2, and be involved in differentiation of skeletal muscle.

Interactions

CDK9 has been shown to interact with:

Human Genome Organisation

The Human Genome Organisation (HUGO) is an organization involved in the Human Genome Project, a project about mapping the human genome. HUGO was established in 1989 as an international organization, primarily to foster collaboration between genome scientists around the world. The HUGO Gene Nomenclature Committee (HGNC), sometimes referred to as "HUGO", is one of HUGO's most active committees and aims to assign a unique gene name and symbol to each human gene.

History

HUGO was established in late April 1988 at the first meeting dedicated to genome mapping at Cold Spring Harbor. The idea of starting the organization stemmed from a South African biologist by the name of Sydney Brenner, who is known for his significant contributions to work on the genetic code and other areas of molecular biology, as well as winning the Nobel prize in Physiology of Medicine in 2002. A Founding Council was elected at the meeting that total 42 scientists from 17 different countries. HUGO is grounded in Geneva Switzerland, and later went on to elect an additional 178 members, bringing the total up to 220.