As pgRNA acts as a template for
synthesis of negative DNA chain, the new chain elongates. After
synthesis of negative DNA chain is completed, pgRNA template is
broken down by H domain of polymerase ribonuclease (RNAse).
Completed negative chain is used as template for positive chain
synthesis. Positive chain synthesis is rarely completed, and it
is found at different lengths in HBV virion. Maturation step is
completed in the cytoplasm by switching of RNA to DNA inside
the nucleocapsid.
由于pgRNA作为模板
合成负DNA链,新链延长。 后
完成负DNA链的合成,pgRNA模板是
由聚合酶核糖核酸酶(RNAse)的H结构域分解。
完成的负链用作正链的模板
合成。 正链合成很少完成,而且
在HBV病毒体中发现不同长度。 成熟步骤是
通过将RNA切换到DNA内,在细胞质中完成
核衣壳.