MCEF

AF4/FMR2 family, member 4
Identifiers
Symbol	AFF4
NCBI gene	27125
HGNC	17869
OMIM	604417
RefSeq	NM_014423
UniProt	Q9UHB7
Other data
Locus	Chr. 5 q31
Search for Structures Swiss-model Domains InterPro

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. ^[1]

MCEF was originally cloned and named by Mario Clemente Estable of Ryerson University, while he was a post-doctoral fellow in the laboratory of Robert G. Roeder, at the Rockefeller University.

See also

Transcription factors

References

1. Estable M, Naghavi M, Kato H, Xiao H, Qin J, Vahlne A, Roeder R (2002). "MCEF, the newest member of the AF4 family of transcription factors involved in leukemia, is a positive transcription elongation factor-b-associated protein". J Biomed Sci. 9 (3): 234–245. doi:10.1007/BF02256070. PMID   12065898.

• 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. doi:10.7150/ijbs.3.225. PMC   1820876 . PMID   17389929.
• MCEF+protein,+human at the U.S. National Library of Medicine Medical Subject Headings (MeSH)