Hepatitis B virus regulatory HBx protein binding to DDB1 is required but is not sufficient for maximal HBV replication.
Hepatitis B virus regulatory HBx protein binding to DDB1 is required but is not sufficient for maximal HBV replication.
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DOI:
10.1016/j.virol.2012.01.021
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发表时间:
2012-04-25
期刊:
影响因子:
3.7
通讯作者:
Slagle BL
中科院分区:
文献类型:
--
作者:
Hodgson AJ;Hyser JM;Keasler VV;Cang Y;Slagle BL
Robust hepatitis B virus (HBV) replication is stimulated by the regulatory HBx protein. HBx binds the cellular protein DDB1; however, the importance of this interaction for HBV replication remains unknown. We tested whether HBx binding to DDB1 was required for HBV replication using a plasmid based replication assay in HepG2 cells. Three DDB1 binding-deficient HBx point mutants (HBx69, HBx90/91, HBxR96E) failed to restore wildtype levels of replication from an HBx-deficient plasmid, which established the importance of the HBx-DDB1 interaction for maximal HBV replication. Analysis of overlapping HBx truncation mutants revealed that both the HBx-DDB1 binding domain and the carboxyl region are required for maximal HBV replication both in vitro and in vivo, suggesting the HBx-DDB1 interaction recruits regulatory functions critical for replication. Finally we demonstrate that HBx localizes to the Cul4A-DDB1 complex, and discuss the possible implications for models of HBV replication.
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影响因子:
3.7
作者:
Keasler, Victor V.;Hodgson, Amanda J.;Madden, Charles R.;Slagle, Betty L.
通讯作者:
Slagle, Betty L.
影响因子:
5.4
作者:
Bergametti, F;Sitterlin, D;Transy, C
通讯作者:
Transy, C
影响因子:
3.5
作者:
Du, Juan;Zhou, Yong;Zhan, Lin-Sheng
通讯作者:
Zhan, Lin-Sheng
影响因子:
5.4
作者:
Becker, SA;Lee, TH;Slagle, BL
通讯作者:
Slagle, BL
DOI:
10.1073/pnas.90.17.8078
发表时间:
1993-09-01
影响因子:
11.1
作者:
CROSS, JC;WEN, P;RUTTER, WJ
通讯作者:
RUTTER, WJ