Characterization of the nuclear localization signal of the hepatitis delta virus antigen

被引：27

作者：

Alves, Carolina ^{[1
]}

Freitas, Natalia ^{[1
]}

Cunha, Celso ^{[1
]}

机构：

[1] Univ Nova Lisboa, Inst Higiene & Med Trop, Ctr Malaria & Outras Doencas Trop, Unidade Biol Mol, P-1349008 Lisbon, Portugal

来源：

VIROLOGY | 2008年 / 370卷 / 01期

关键词：

hepatitis D virus; delta antigen; nuclear localization signal;

D O I：

10.1016/j.virol.2007.07.034

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

The delta antigen (HDAg) is the only protein encoded by the hepatitis delta virus (HDV) RNA genome. The HDAg contains an RNA binding domain, a dimerization domain, and a nuclear localization signal (NLS). The nuclear import of HDV RNPs is thought to be one of the first tasks of the HDAg during the HDV replication cycle. Using c-myc-PK fusions with several regions of the HDAg in transfection assays in Huh7 cells, we found that the HDAg NLS consists of a single stretch of 10 amino acids, EGAPPAKRAR, located in positions 66-75. Deletion and mutation analysis of this region showed that both the acidic glutamic acid residue at position 66 and the basic arginine residue at position 75 are essential for promoting nuclear import. (c) 2007 Elsevier Inc. All rights reserved.

引用

页码：12 / 21

页数：10

共 28 条

[1] HEPATITIS-D VIRUS-RNA EDITING - SPECIFIC MODIFICATION OF ADENOSINE IN THE ANTIGENOMIC RNA [J].