Determinant Differences Between the Rabbit and Mouse Immunoglobulin Kappa Enhancers Impair the Activity of the Rabbit Enhancer in Mouse Myeloma Cells

Overview

Journal Nucleic Acids Res

Publisher Oxford University Press

Specialty Biochemistry

Date 1989 Jun 26

PMID 2501761

Citations 2

Authors

M A Akimenko

M Ekker

N DOYEN

C Biben

F Rougeon

Affiliations

Soon will be listed here.

Abstract

Enhancer activity of the rabbit immunoglobulin kappa light chain gene intron conserved region (KICR) was examined in mouse myeloma cells using transient expression experiments. Compared to the homologous region of the mouse kappa light chain gene, the rabbit KICR shows nearly no stimulatory effect on expression of the indicator gene, cat. Experiments with mouse-rabbit chimeric KICRs indicated that differences in the region around the NF-kappa B binding site are responsible for the impaired activity of the rabbit KICR whereas mouse sequences covering the kappa E2 and kappa E3 motifs can be replaced by the equivalent rabbit fragment without affecting enhancer function. Creation of a perfect mouse NF-kappa B target sequence in the rabbit gene only partially restores enhancer activity. Furthermore, mouse and rabbit DNA fragments encompassing the NF-kappa B target sequence behave in an identical manner in an electrophoretic mobility shift assay. The results indicate species-related functional differences in the immunoglobulin kappa light chain gene enhancer and suggest that although the NF-kappa B binding site plays a crucial role in enhancer activity surrounding gene elements are also necessary for full enhancer effect.

Citing Articles

A novel snail-related transcription factor Smuc regulates basic helix-loop-helix transcription factor activities via specific E-box motifs.

Kataoka H, Murayama T, Yokode M, Mori S, Sano H, Ozaki H Nucleic Acids Res. 1999; 28(2):626-33.

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Evolution of the rabbit immunoglobulin kappa chain genes.

Ayadi H, Marche P, Cazenave P Immunogenetics. 1991; 34(3):201-7.

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