PMID: 9183693Jun 2, 1997Paper

Distribution of transferrin binding protein immunoreactivity in the chicken central and peripheral nervous systems

The Journal of Comparative Neurology
S S ChoS H Baik

Abstract

Transferrin binding protein (TfBP) is a glycoprotein originally purified from chicken oviduct that exhibits transferrin binding activity. Recent work has shown that TfBP is a post-translationally modified form of the heat shock protein (HSP108), the avian homologue of a glucose regulated protein, GRP94. The function of this protein, however, has not yet been clearly defined. Antiserum to TfBP was found to selectively stain oligodendrocytes of the avian brain. In this study, we further describe these oligodendrocytes and other cell types positive to anti-TfBP in the chick nervous system. In accordance with previous studies, the most prominent cell type that labels with antiserum to TfBP is the oligodendrocyte. At the electron microscopic level, the immunoreactive product is confined to the perinuclear cytoplasm and fine processes of the oligodendrocytes, whereas myelin and axoplasm are devoid of staining. The immunoreactive product is found both in the cytoplasmic matrix and bound to the endoplasmic reticulum and plasma membrane, suggesting that TfBP may have properties of both a soluble and an integral membrane protein. There is great variability in the number of TfBP-oligodendrocytes in different areas of the central nervous s...Continue Reading

Citations

Dec 4, 2003·Anatomia, histologia, embryologia·D H ShinS S Cho

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