tokens: Retroviral nucleocapsid proteins ( NCPs ) are CCHC-type zinc finger proteins that mediate virion RNA binding activities associated with retrovirus assembly and genomic RNA encapsidation .
folded_tokens: retroviral nucleocapsid protein ( ncp ) be cchc-type zinc finger protein that mediate virion rna binding activity associate with retrovirus assembly and genomic rna encapsidation .