Expression and characterization of a fusion protein between the catalytic domain of poly(ADP-ribose) polymerase and the DNA binding domain of the glucocorticoid receptor.

Abstract:

:A fusion protein comprising the DNA-binding region of the glucocorticoid receptor and the catalytic domain of poly(ADP-ribose) polymerase was constructed. This chimeric protein was expressed both in E. coli and in eukaryotic cells and was recognized by antibodies to both polymerase and the glucocorticoid receptor. Similar to polymerase, the chimera produced bona fide poly (ADP-ribose) polymers covalently bound to protein and was inhibited by 3-aminobenzamide. Like the authentic glucocorticoid receptor, the fusion protein formed a stable complex with DNA containing the glucocorticoid response element. In mammalian cells, the fusion protein significantly and specifically inhibited the ability of the glucocorticoid receptor to stimulate a reporter construct. These results indicate that polymerase activity can be targeted to specific DNA sequences and modulate gene expression.

authors

Rosenthal D,Hong T,Cherney B,Zhang S,Shima T,Danielsen M,Smulson M

doi

10.1006/bbrc.1994.2012

subject

Has Abstract

pub_date

1994-07-29 00:00:00

pages

880-7

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006291X84720122

journal_volume

202

pub_type

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