Aliases for CCNT2 Gene
External Ids for CCNT2 Gene
Previous GeneCards Identifiers for CCNT2 Gene
The protein encoded by this gene belongs to the highly conserved cyclin family, whose members are characterized by a dramatic periodicity in protein abundance through the cell cycle. Cyclins function as regulators of CDK kinases. Different cyclins exhibit distinct expression and degradation patterns which contribute to the temporal coordination of each mitotic event. This cyclin and its kinase partner CDK9 were found to be subunits of the transcription elongation factor p-TEFb. The p-TEFb complex containing this cyclin was reported to interact with, and act as a negative regulator of human immunodeficiency virus type 1 (HIV-1) Tat protein. A pseudogene of this gene is found on chromosome 1. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Dec 2010]
GeneCards Summary for CCNT2 Gene
CCNT2 (Cyclin T2) is a Protein Coding gene. Diseases associated with CCNT2 include Human Immunodeficiency Virus Type 1 and Breast Cancer. Among its related pathways are Formation of HIV-1 elongation complex containing HIV-1 Tat and HIV Life Cycle. Gene Ontology (GO) annotations related to this gene include protein kinase binding. An important paralog of this gene is CCNT1.
UniProtKB/Swiss-Prot Summary for CCNT2 Gene
Regulatory subunit of the cyclin-dependent kinase pair (CDK9/cyclin T) complex, also called positive transcription elongation factor B (P-TEFB), which is proposed to facilitate the transition from abortive to production elongation by phosphorylating the CTD (carboxy-terminal domain) of the large subunit of RNA polymerase II (RNAP II) (PubMed:9499409, PubMed:15563843). The activity of this complex is regulated by binding with 7SK snRNA (PubMed:11713533). Plays a role during muscle differentiation; P-TEFB complex interacts with MYOD1; this tripartite complex promotes the transcriptional activity of MYOD1 through its CDK9-mediated phosphorylation and binds the chromatin of promoters and enhancers of muscle-specific genes; this event correlates with hyperphosphorylation of the CTD domain of RNA pol II (By similarity). In addition, enhances MYOD1-dependent transcription through interaction with PKN1 (PubMed:16331689). Involved in early embryo development (By similarity).
(Microbial infection) Promotes transcriptional activation of early and late herpes simplex virus 1/HHV-1 promoters.