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. 1986 Apr;6(4):1329–1333. doi: 10.1128/mcb.6.4.1329

Orientation of the v-erb-B gene product in the plasma membrane.

R C Schatzman, G I Evan, M L Privalsky, J M Bishop
PMCID: PMC367647  PMID: 3023882

Abstract

The retroviral oncogene v-erb-B encodes a truncated version of the receptor for epidermal growth factor. To define the disposition of the v-erb-B protein within cells and across the plasma membrane, we raised antibodies against defined epitopes in the protein and used these in immunofluorescence to analyze cells transformed by v-erb-B. A small fraction of the v-erb-B protein was found on the plasma membrane in a clustered configuration. The bulk of the protein was located in the endoplasmic reticulum and Golgi apparatus. Epitopes near the amino terminus of the v-erb-B protein were displayed on the surface of the cell, whereas epitopes in the protein kinase domain were located exclusively within cells. We conclude that the v-erb-B protein spans the plasma membrane in a manner similar or identical to that of the epidermal growth factor receptor, even though the viral transforming protein does not possess the signal peptide that is thought to direct insertion of the receptor into the membrane.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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