Transient expression of a winged-helix protein, MNF-beta, during myogenesis.

Journal Article (Journal Article)

A novel winged-helix transcription factor, MNF-beta, is expressed coincidentally with cell cycle withdrawal and differentiation of skeletal myogenic cells. MNF-beta is closely related to the myocyte nuclear factor (MNF) protein previously described (now termed MNF-alpha), but expression of the two isoforms is differentially regulated, and they exhibit distinctive functional properties with respect to DNA binding in vitro and transcriptional regulatory activity in transient-transfection assays. A DNA sequence motif binding MNF-beta with high affinity was selected from a library of random oligonucleotides and was found to be similar to but distinct from the cognate binding site for HNF-3beta, a more distantly related winged-helix protein. The temporal pattern of MNF-beta expression and the presence of MNF binding motifs within conserved promoter elements of several genes that modulate cell cycle progression support a working hypothesis that MNF proteins may modulate proliferation of myogenic precursor cells during development and muscle regeneration.

Full Text

Duke Authors

Cited Authors

  • Yang, Q; Bassel-Duby, R; Williams, RS

Published Date

  • September 1997

Published In

Volume / Issue

  • 17 / 9

Start / End Page

  • 5236 - 5243

PubMed ID

  • 9271401

Pubmed Central ID

  • PMC232374

International Standard Serial Number (ISSN)

  • 0270-7306

Digital Object Identifier (DOI)

  • 10.1128/MCB.17.9.5236


  • eng

Conference Location

  • United States