Structural and Functional Properties of Il-4δ2, an Alternative Splice Variant of Human IL-4

Document Type

Article

Publication Date

2003

Keywords

Interleukin 4, Interleukine Recepto, Splice Variant, Cytokine, Four-helix-bundle Cytokine

Digital Object Identifier (DOI)

https://doi.org/10.1021/pr025586y

Abstract

Structural and functional properties of recombinant IL-4δ2, a naturally occurring splice variant of human IL-4 with a deletion of the loop region 22−37, have been analyzed. IL-4δ2 has α-helical structure and most likely preserves the “up−up−down−down” topology typical of the four-helix-bundle cytokines. IL-4δ2 interacts specifically with the α chain of IL-4R and competes effectively with IL-4 for the common binding sites. Thus, IL-4δ2 may act as a regulator of the cytokine net, being the natural antagonist of IL-4.

Was this content written or created while at USF?

Yes

Citation / Publisher Attribution

Journal of Proteome Research, v. 2, issue 3, p. 273-281

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