Full-length and truncated versions of the hepatitis B virus (HBV) X protein (pX) transactivate the cmyc protooncogene at the transcriptional level.

Abstract:

:The products of the human hepatitis B virus (HBV) and woodchuck hepatitis B virus X genes (pXs) transactivate homologous and heterologous genes including the HBV-X and core promoters, the human immunodeficiency viruses 1 (HIV-1) and 2 (HIV-2) long terminal repeats and the beta interferon regulatory sequences. We report here that pX is also able to influence the expression of both extrachromosomal transfected c-myc regulatory sequences and endogenous c-myc gene. pX acts by increasing transcription of the c-myc gene and do not affect c-myc mRNAs stability. The presence of the first AUG of the X-ORFs is indeed necessary for the production of an active pX. The very carboxyterminus of the pX protein is dispensable for this transactivating activity and at least one domain important for its action is located between aminoacids 103 and 117.

authors

Balsano C,Avantaggiati ML,Natoli G,De Marzio E,Will H,Perricaudet M,Levrero M

doi

10.1016/0006-291x(91)90379-l

subject

Has Abstract

pub_date

1991-05-15 00:00:00

pages

985-92

issue

3

eissn

0006-291X

issn

1090-2104

pii

0006-291X(91)90379-L

journal_volume

176

pub_type

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