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. 1989 Jan;9(1):312–320. doi: 10.1128/mcb.9.1.312

New B-lymphocyte-specific enhancer-binding protein.

A Dorn 1, C Benoist 1, D Mathis 1
PMCID: PMC362174  PMID: 2564635

Abstract

We report the discovery of a new B-lymphocyte-specific enhancer-binding protein. A series of gel retardation assays using fragments that scan the -2172 to -1180 region of the major histocompatibility complex class II gene E alpha reveal a site (W) that serves as the recognition sequence for two nuclear proteins, one B-cell restricted and the other ubiquitously occurring. Certain characteristics of the NF-W1 and NF-W2 pair recall the OTF-2/NF-A2 and OTF-1/NF-A1 pair that binds to the immunoglobulin octamer, but we demonstrate that the two protein pairs are distinguishable by several criteria. NF-W1 and NF-W2 interact differentially with their common GTTGCATC binding site, display a different affinity for it, and have molecular weights that differ by about 20,000. Yet, proteolysis experiments and cross-linking analyses indicate that the two W complexes show structural relatedness.

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Selected References

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