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Mol. Cell. Biol., Jul 1997, 4007-4014, Vol 17, No. 7
SJ Busfield, DA Michnick, TW Chickering, TL Revett, J Ma, EA Woolf, CA Comrack, BJ Dussault, J Woolf, AD Goodearl and DP Gearing
Members of the epidermal growth factor family of receptors have long been
implicated in the pathogenesis of various tumors, and more recently,
apparent roles in the developing heart and nervous system have been
described. Numerous ligands that activate these receptors have been
isolated. We report here on the cloning and initial characterization of a
second ligand for the erbB family of receptors. This factor, which we have
termed Don-1 (divergent of neuregulin 1), has structural similarity with
the neuregulins. We have isolated four splice variants, two each from human
and mouse, and have shown that they are capable of inducing tyrosine
phosphorylation of erbB3, erbB4, and erbB2. In contrast to those of
neuregulin, high levels of expression of Don-1 are restricted to the
cerebellum and dentate gyrus in the adult brain and to fetal tissues.
Copyright © 1997, American Society for Microbiology
Characterization of a neuregulin-related gene, Don-1, that is highly expressed in restricted regions of the cerebellum and hippocampus
Millennium Pharmaceuticals Incorporated, Cambridge, Massachusetts 02139, USA. busfield@mpi.com
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