|AF4/FMR2 family, member 4|
|Locus||Chr. 5 q31|
MCEF or Major Cdk9-interacting elongation factor is a transcription factor related to Af4. It is the fourth member of the Af4 family (AFF) of transcription factors, involved in numerous pathologies, including Acute Lymphoblastic Leukemia (ALL), abnormal CNS development, breast cancer and azoospermia.
Because it apparently interacts with the species-specific human co-factor (P-TEFb) for HIV-1 transcription, and because it can repress HIV-1 replication, MCEF (also known as AFF4 or AF5q31) may have future therapeutic uses.
- Niedzielski MF, Hopewell R, Ismail Z, Estable MC (2007). "MCEF is localized to the nucleus by protein sequences encoded within three distinct exons, where it represses HIV-1 Tat-transactivation of LTR-directed transcription". Int J Biol Sci. 3 (4): 225–236. PMC . PMID 17389929.
- MCEF protein, human at the US National Library of Medicine Medical Subject Headings (MeSH)
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