Abstract:
:Syndecan-3 is one of four identified members of a family of transmembrane proteoglycans (the syndecans) that possess highly similar cytoplasmic and transmembrane domains and may function as extracellular matrix receptors and/or low affinity receptors for signaling molecules such as FGF. We previously reported the cloning of a partial cDNA for chicken syndecan-3. Here we report the isolation of a syndecan-3 cDNA containing additional 5' sequence which includes a potential methionine start codon and putative signal sequence. In vitro translation of syndecan-3 cDNA in the presence and absence of microsomes suggests that the putative signal sequence is functional, suggesting that the cDNA may encompass the full coding sequence. We also identify syndecan-3 as a heparan sulfate proteoglycan and report its expression pattern during chicken embryogenesis using polyclonal antibodies raised against a recombinant fusion protein. We detect abundant syndecan-3 expression in the developing brain and neural tube, including a striking expression in the floor plate of the neural tube. During limb development, syndecan-3 is expressed in the distal mesenchymal cells of the limb bud which are undergoing outgrowth in response to the apical ectodermal ridge. Syndecan-3 is also transiently expressed during the formation of the precartilage condensations of the skeletal elements of the limb and subsequently in association with the differentiating osteoblasts of the periosteum. Expression is also observed in several areas of tissue interactions including the developing lens, otic vesicle, genital ridge, sclerotome, and feather buds.
journal_name
Dev Bioljournal_title
Developmental biologyauthors
Gould SE,Upholt WB,Kosher RAdoi
10.1006/dbio.1995.1093subject
Has Abstractpub_date
1995-04-01 00:00:00pages
438-51issue
2eissn
0012-1606issn
1095-564Xpii
S0012-1606(85)71093-7journal_volume
168pub_type
杂志文章abstract::To examine whether the 200-kDa neurofilament protein (200K NFP) is involved in mechanically stabilizing axons, we studied the developmental appearance of immunoreactivity to nonphosphorylated and phosphorylated 200K NFP at the neuromuscular junction. Polyinnervated rat muscle fibers become singly innervated during the...
journal_title:Developmental biology
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journal_title:Developmental biology
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pub_type: 杂志文章
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pub_type: 杂志文章
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