The E2 protein of human papillomavirus type 16. Over-expression and purification of an active transcriptional regulator.
Eur J Biochem
; 190(1): 85-92, 1990 May 31.
Article
em En
| MEDLINE
| ID: mdl-2163836
ABSTRACT
The E2 open reading frame of human papillomavirus type 16 was inserted into the Escherichia coli vector pKK223-3, and expressed to greater than 15% of total cellular protein when induced with isopropyl beta-D-thiogalactopyranoside. The highest expressing clone was grown in bulk and the E2 protein purified to homogeneity by the following procedure (a) isolation of the insoluble protein fraction; (b) extraction with urea; (c) quaternary amino-ethyl-Sepharose ion-exchange chromatography and (d) renaturation and chromatography on dextran sulphate. That the purified protein was fully functionally active was confirmed by its specific DNA-binding properties and its ability to activate gene transcription by over two orders of magnitude in an in vivo assay.
Buscar no Google
Base de dados:
MEDLINE
Assunto principal:
Papillomaviridae
/
Fatores de Transcrição
/
Proteínas Recombinantes
/
Regulação Viral da Expressão Gênica
/
Proteínas Oncogênicas Virais
/
Proteínas de Ligação a DNA
Idioma:
En
Ano de publicação:
1990
Tipo de documento:
Article