RNA,Satellite

《英文msh詞典》RNA,Satellite
[主題詞] RNA,Satellite
[同義詞] Satellite RNA
[入口詞] Satellite RNAs
[入口詞] RNAs,Satellite
[中文釋義] RNA,衛星
[英文釋義] Small,linear single-stranded RNA molecules functionally acting as molecular parasites of certain RNA plant viruses. Satellite RNAs exhibit four characteristic traits: (1) they require helper viruses to replicate; (2) they are unnecessary for the replication of helper viruses; (3) they are encapsidated in the coat protein of the helper virus; (4) they have no extensive sequence homology to the helper virus. Thus they differ from SATELLITE VIRUSES which encode their own coat protein,and from the genomic RNA; (=RNA,VIRAL); of satellite viruses. (From Maramorosch,Viroids and Satellites,1991,p143)