The respiratory syncytial virus nucleoprotein-RNA complex forms a left-handed helical nucleocapsid.
The respiratory syncytial virus nucleoprotein-RNA complex forms a left-handed helical nucleocapsid.
复制标题
呼吸综合病毒核蛋白-RNA复合物形成左手螺旋核蛋白酶。
DOI:
10.1099/vir.0.053025-0
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发表时间:
2013-08
期刊:
影响因子:
--
通讯作者:
Bhella D
中科院分区:
文献类型:
--
作者:
Bakker SE;Duquerroy S;Galloux M;Loney C;Conner E;Eléouët JF;Rey FA;Bhella D
Respiratory syncytial virus (RSV) is an important human pathogen. Its nucleocapsid (NC), which comprises the negative sense RNA viral genome coated by the viral nucleoprotein N, is a critical assembly that serves as template for both mRNA synthesis and genome replication. We have previously described the X-ray structure of an NC-like structure: a decameric ring formed of N-RNA that mimics one turn of the helical NC. In the absence of experimental data we had hypothesized that the NC helix would be right-handed, as the N–N contacts in the ring appeared to more easily adapt to that conformation. We now unambiguously show that the RSV NC is a left-handed helix. We further show that the contacts in the ring can be distorted to maintain key N–N-protein interactions in a left-handed helix, and discuss the implications of the resulting atomic model of the helical NC for viral replication and transcription.
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