Expression in Escherichia coli of the 36 kDa domain of poly(ADP-ribose) polymerase and investigation of its DNA binding properties.
Biochim Biophys Acta
; 1163(1): 49-53, 1993 Apr 21.
Article
en En
| MEDLINE
| ID: mdl-8476928
ABSTRACT
We have expressed in Escherichia coli the 36 kDa domain of the human poly(ADP-ribose) polymerase. This polypeptide comprises the C-terminal part of the DNA binding domain, as well as the automodification region of the enzyme, but lacks the zinc-finger motifs of the N-terminal region and the C-terminal catalytic domain. By probing the crude E. coli protein extracts with radioactive DNA probes (South-Western blots), we have shown that the 36 kDa domain binds a DNA probe of 222 bp but does not bind a shorter probe of 66 bp. This interaction is stronger when the polypeptide is fused to the 55 kDa catalytic domain of the enzyme.
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Banco de datos:
MEDLINE
Asunto principal:
Poli(ADP-Ribosa) Polimerasas
/
Escherichia coli
Límite:
Humans
Idioma:
En
Año:
1993
Tipo del documento:
Article