Note that this version of the protocl was adopted to V14 chemistry of ONT.
This RCA-NGS were optimized for an NGS machine, MinION. These methods do not require nucleic acid amplification with virus-specific PCR primers, physical viral particle enrichment, and RACE.
These methods enable whole RNA viral genome sequencing by combining the following techniques:
1) removal of unwanted DNA and RNA other than the RNA viral genome by nuclease treatment
2) the terminal of viral genome sequence determination by barcoded linkers ligation
3) Amplification of the viral genomic cDNA using an isothermal DNA amplification technique, such as rolling circle amplification (RCA).
This method can be exploited to determine any whole RNA viral genomes (i.e., single-stranded, double-stranded, positive-stranded, negative-stranded, non-segmented or multi-segmented genomes).