The hepatitis B virus x protein inhibits thymine DNA glycosylase initiated base excision repair.

The hepatitis B virus x protein inhibits thymine DNA glycosylase initiated base excision repair.
复制标题

DOI:
10.1371/journal.pone.0048940
复制
发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Kootstra NA
Kootstra NA
中科院分区:
综合性期刊3区
文献类型:
--
作者:
van de Klundert MA;van Hemert FJ;Zaaijer HL;Kootstra NA

文献摘要

参考文献

被引文献

相似文献

乙型肝炎病毒(HBV)基因组编码X蛋白(HBx),这是HBV复制所必需的一种普遍存在的反激活因子。HBx蛋白的表达与HBV感染相关的肝细胞癌(HCC)的发展有关。在此之前,我们通过结合同源性和从头算在硅建模生成了HBx的三维结构。这种结构与人类胸腺嘧啶DNA糖基酶(TDG)惊人的相似,TDG是碱基切除修复(BER)途径的关键酶。为了进一步探索这一发现,我们研究了这两种蛋白质是否会干扰或互补彼此的功能。本研究表明,TDG不影响HBV复制,但HBx强烈抑制TDG启动的碱基切除修复(BER),这是一种主要的DNA修复途径。抑制BER通路可能在很大程度上促进了HBV感染的致癌作用。
The hepatitis B virus (HBV) genome encodes the X protein (HBx), a ubiquitous transactivator that is required for HBV replication. Expression of the HBx protein has been associated with the development of HBV infection-related hepatocellular carcinoma (HCC). Previously, we generated a 3D structure of HBx by combined homology and ab initio in silico modelling. This structure showed a striking similarity to the human thymine DNA glycosylase (TDG), a key enzyme in the base excision repair (BER) pathway. To further explore this finding, we investigated whether both proteins interfere with or complement each other’s functions. Here we show that TDG does not affect HBV replication, but that HBx strongly inhibits TDG-initiated base excision repair (BER), a major DNA repair pathway. Inhibition of the BER pathway may contribute substantially to the oncogenic effect of HBV infection.
DOI: 10.1042/bj20081336
发表时间: 2008-12-01
影响因子: 4.1
作者:
Kim, KyeongJin;Kim, Kook Hwan;Cheong, JaeHun
通讯作者: Cheong, JaeHun
DOI: 10.1128/jvi.79.7.4238-4245.2005
发表时间: 2005-04-01
影响因子: 5.4
作者:
Leupin, O;Bontron, S;Strubin, M
通讯作者: Strubin, M
DOI: 10.1172/jci119037
发表时间: 1996-11-15
影响因子: 15.9
作者:
Baumert, TF;Rogers, SA;Liang, TJ
通讯作者: Liang, TJ
DOI: 10.1128/jvi.02020-06
发表时间: 2007-03-01
影响因子: 5.4
作者:
Keasler, Victor V.;Hodgson, Amanda J.;Slagle, Betty L.
通讯作者: Slagle, Betty L.
DOI: 10.1128/jvi.69.2.1107-1114.1995
发表时间: 1995-02-01
影响因子: 5.4
作者:
LEE, TH;ELLEDGE, SJ;BUTEL, JS
通讯作者: BUTEL, JS