Myocyte enhancer factor gene transcriptions

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Associate Editor(s)-in-Chief: Henry A. Hoff

Mef2 was originally identified as a transcription factor complex through promoter analysis of the muscle creatine kinase (mck) gene to identify nuclear factors interacting with the mck enhancer region during muscle differentiation.[1]

Three human mRNA coding sequences designated RSRF (Related to Serum Response Factor) were cloned and shown to dimerize, bind a consensus sequence similar to the one present in the MCK enhancer region, and drive transcription.[2] RSRFs were subsequently demonstrated to encode human genes now named Mef2A, Mef2B and Mef2D.

Myocyte enhancer factor-2 (MEF2) proteins are a family of transcription factors which through control of gene expression are important regulators of cellular differentiation and consequently play a critical role in embryonic development.[3] In adult organisms, Mef2 proteins mediate the stress response in some tissues.[3]

Human genes

Vertebrates have at least four versions of the Mef2 gene (human versions are denoted as Myocyte-specific enhancer factor 2A (MEF2A), MEF2B, MEF2C, and MEF2D), all expressed in distinct but overlapping patterns during embryogenesis through adulthood.[4]

Interactions

Consensus sequences

"The current study delineates the conformational paradigm, clustered recognition, and comparative DNA binding preferences for MEF2A and MEF2B-specific MADS-box/MEF2 domains at the YTA(A/T)4TAR consensus motif."[5] Y = (C/T) and R = (A/G). The consensus sequence is (C/T)TA(A/T)(A/T)(A/T)(A/T)TA(A/G).[5]

Samplings

Copying an apparent consensus sequence for the TTATAT or CTAATT and putting it in "⌘F" finds two (TTATAT) located between ZSCAN22 and one (CTAATT) between ZNF497 and A1BG as can be found by the computer programs.

See also

References

  1. Gossett LA, Kelvin DJ, Sternberg EA, Olson EN (1 November 1989). "A new myocyte-specific enhancer-binding factor that recognizes a conserved element associated with multiple muscle-specific genes". Mol. Cell. Biol. 9 (11): 5022–33. doi:10.1128/MCB.9.11.5022. PMC 363654. PMID 2601707.
  2. Pollock R, Treisman R (1991). "Human SRF-related proteins: DNA-binding properties and potential regulatory targets". Genes Dev. 5 (12a): 2327–41. doi:10.1101/gad.5.12a.2327. PMID 1748287.
  3. 3.0 3.1 Potthoff MJ, Olson EN (December 2007). "MEF2: a central regulator of diverse developmental programs". Development. 134 (23): 4131–40. doi:10.1242/dev.008367. PMID 17959722. Unknown parameter |s2cid= ignored (help)
  4. McKinsey TA, Zhang CL, Olson EN (2002). "MEF2: a calcium-dependent regulator of cell division, differentiation and death". Trends Biochem. Sci. 27 (1): 40–7. doi:10.1016/S0968-0004(01)02031-X. PMID 11796223.
  5. 5.0 5.1 Ayisha Zia, Muhammad Imran, and Sajid Rashid (7 February 2020). "In Silico Exploration of Conformational Dynamics and Novel Inhibitors for Targeting MEF2-Associated Transcriptional Activity". Journal of Chemical Information and Modeling. 60 (3): 1892–1909. doi:10.1021/acs.jcim.0c00008. Retrieved 10 September 2020.

External links