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Nonamer binding protein induces a bend in the immunoglobulin gene recombinational signal sequence.

Abstract：

:DNA bending has been shown to play a critical role in conservative site-specific DNA recombination reactions such as lambda integration. V(D)J recombination, the only mammalian site directed recombination system, is directed by recombinational signal sequences composed of heptamer, nonamer and spacer elements. The nonamer element, GGTTTTTGT, is similar to the consensus sequence for bent DNA. Using the circular permutation electrophoretic mobility assay, we show that the nonamer sequence has a detectable intrinsic bend. The nonamer sequence has been shown to be the binding site for nonamer binding protein (NBP). Binding of NBP to the nonamer site increases the apparent angle of the bend from 32 degrees to 66 degrees. The identification of a protein induced DNA bend near the site of V(D)J recombination may have implications for our understanding of the mechanism of V(D)J recombination.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Andrews R,Halligan NL,Halligan BD

doi

10.1006/bbrc.1993.1601

subject

Has Abstract

pub_date

1993-05-28 00:00:00

pages

139-45

issue

1

eissn

0006-291X

issn

1090-2104

pii

S0006-291X(83)71601-3

journal_volume

193

pub_type

杂志文章

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