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. 1995 Jun 20;92(13):5870–5874. doi: 10.1073/pnas.92.13.5870

Meso1, a basic-helix-loop-helix protein involved in mammalian presomitic mesoderm development.

M A Blanar 1, P H Crossley 1, K G Peters 1, E Steingrímsson 1, N G Copeland 1, N A Jenkins 1, G R Martin 1, W J Rutter 1
PMCID: PMC41603  PMID: 7597044

Abstract

To identify genes involved in the regulation of early mammalian development, we have developed a dominant-negative mutant basic-helix-loop-helix (bHLH) protein probe for interaction cloning and have isolated a member of the bHLH family of transcription factors, Meso1. Meso1-E2A heterodimers are capable of binding to oligonucleotide probes that contain a bHLH DNA recognition motif. In mouse embryos, Meso1 is expressed prior to MyoD1 family members. Meso1 expression is first detected at the neural plate stage of development in the paraxial mesoderm of the head and in presomitic mesodermal cells prior to their condensation into somites. Our findings suggest that Meso1 may be a key regulatory gene involved in the early events of vertebrate mesoderm differentiation.

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