Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California, United States of America.
Center for Integrative Proteomics Research, Rutgers State University, Piscataway, New Jersey, United States of America.
PLoS Comput Biol. 2019 Jun 13;15(6):e1007150. doi: 10.1371/journal.pcbi.1007150. eCollection 2019 Jun.
A coarse-grain computational method integrates biophysical and structural data to generate models of HIV-1 genomic RNA, nucleocapsid and integrase condensed into a mature ribonucleoprotein complex. Several hypotheses for the initial structure of the genomic RNA and oligomeric state of integrase are tested. In these models, integrase interaction captures features of the relative distribution of gRNA in the immature virion and increases the size of the RNP globule, and exclusion of nucleocapsid from regions with RNA secondary structure drives an asymmetric placement of the dimerized 5'UTR at the surface of the RNP globule.
一种粗粒度的计算方法整合了生物物理和结构数据,生成了整合到成熟核糖核蛋白复合物中的 HIV-1 基因组 RNA、核衣壳和整合酶的模型。对基因组 RNA 的初始结构和整合酶的寡聚状态的几个假设进行了测试。在这些模型中,整合酶的相互作用捕获了 gRNA 在不成熟病毒粒子中的相对分布特征,并增加了 RNP 球的大小,并且核衣壳从 RNA 二级结构的区域中排除,导致二聚化 5'UTR 不对称地位于 RNP 球的表面。