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Epstein–Barr virus-induced gene 3 and the p35 subunit of interleukin 12 form a novel heterodimeric hematopoietin

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Devergne, Odile, Birkenbach, Mark, Kieff, Elliott·1997·Proceedings of the National Academy of Sciences

Abstract

The Epstein–Barr virus-induced gene 3 (EBI3) is a novel soluble hematopoietin component related to the p40 subunit of interleukin 12 (IL-12). When EBI3 was expressed in cells, it accumulated in the endoplasmic reticulum and associated with the molecular chaperone calnexin, indicating that subsequent processing and secretion might be dependent on association with a second subunit. Coimmunoprecipitations from lysates and culture media of cells transfected with expression vectors for EBI3 and/or the p35 subunit of IL-12 now reveal a specific association of EBI3 with p35. Coexpression of EBI3 and p35 mutually facilitates their secretion. Most importantly, a large fraction of p35 in extracts of the trophoblast component of a human full-term normal placenta specifically coimmunoprecipitated with EBI3, indicating that EBI3 is in a heterodimer with p35,in vivo. Because EBI3 is expressed in EBV-transformed B lymphocytes, tonsil, spleen, and placental trophoblasts, the EBI3/p35 heterodimer is likely to be an important immunomodulator.

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Metadata

Authors
Devergne, O., Birkenbach, M., & Kieff, E.
Venue
Proceedings of the National Academy of Sciences
Published
1997-10-28
Volume
94
Issue
22
Pages
12041-12046
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2097762449
Cited by
326
References
0
FWCI
2.00
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Epstein–Barr virus-induced gene 3 and the p35 subunit of interleukin 12 form a novel heterodimeric hematopoietin. https://app.cochat.ai/papers/10.1073/pnas.94.22.12041
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Devergne, O., Birkenbach, M., & Kieff, E. (1997). Epstein–Barr virus-induced gene 3 and the p35 subunit of interleukin 12 form a novel heterodimeric hematopoietin. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.94.22.12041

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