RNA,Satellite

《英文msh词典》RNA,Satellite
[主题词] RNA,Satellite
[同义词] Satellite RNA
[入口词] Satellite RNAs
[入口词] RNAs,Satellite
[中文释义] RNA,卫星
[英文释义] 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)