Cyclin T1: Proteins and Enzymes

Cyclin T1 belongs to the cyclin family and is a primary regulator of CDK kinases. More specifically, this cyclin associates with CDK9 complex, also known as transcription elongation factor B (P-TEFb). This complex allows for the transcription of viral genes and is also involved in the regulation of the carboxy-terminal domain (CTD) of the largest RNA polymerase II subunit. Cyclin interacts with HIV-1, HIV-2, Tat and has a high affinity to TAR.