Bioorthogonal dissection of the replicase assembly of hepatitis C virus.
Bioorthogonal dissection of the replicase assembly of hepatitis C virus.
复制标题
丙型肝炎病毒复制酶组装的生物正交解剖
DOI:
10.1016/j.chembiol.2021.03.006
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发表时间:
2021-09-16
影响因子:
8.6
通讯作者:
Yi Z
中科院分区:
文献类型:
--
作者:
Zhang Y;Chen S;Yuan Z;Yi Z
Positive-strand RNA viruses such as hepatitis C virus (HCV), flaviviruses, and coronaviruses are medically important. Assembly of replicase on host membranes is a conserved replication strategy and an attractive antiviral target. The mechanisms of replicase assembly are largely unknown, due to the technical difficulties in purifying the replicase and carrying out structural studies. Here, with an HCV replicase assembly surrogate system, we employed a bioorthogonal system to introduce the photolabile unnatural amino into each residue in the cytosolic regions of NS4B and the amphipathic helix (AH) of NS5A. Photocrosslinking enabled visualization of NS4B oligomerization and NS5A dimerization at pinpointed interacting residues and identifying contacting sites among the replicase components. Characterization of the interacting sites revealed hub elements in replicase assembly by docking replicase components to prompt protein-protein interactions. The results provide information about the molecular architecture of the replicase, advancing understanding of the mechanism of replicase assembly. Zhang et al. use a polyprotein expression model to introduce a photoactivatable unnatural amino acids at individual residues to characterize the interaction between HCV replicase components NS4B, NS5A, and NS3. The detailed landscape of protein-protein interactions provides a model for replicase assembly.
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影响因子:
5.9
作者:
Gu, Meigang;Rice, Charles M.
通讯作者:
Rice, Charles M.
影响因子:
6.7
作者:
Gouttenoire J;Montserret R;Paul D;Castillo R;Meister S;Bartenschlager R;Penin F;Moradpour D
通讯作者:
Moradpour D
影响因子:
5.4
作者:
Ahola, T;den Boon, JA;Ahlquist, P
通讯作者:
Ahlquist, P
影响因子:
5.4
作者:
Lohmann, V;Korner, F;Bartenschlager, R
通讯作者:
Bartenschlager, R
影响因子:
3.8
作者:
Lundin, Marika;Lindstrom, Hannah;Persson, Mats A. A.
通讯作者:
Persson, Mats A. A.