Figure 1
From: High-throughput profiling of point mutations across the HIV-1 genome
HIV-1 mutant library and NGS sample preparation. (A) Genomic region for each HIV-1 mutation library. (B) The two-step PCR amplicon approach for NGS sample preparation. Virion cDNA from each mutant viral population cell passage is used as template for a HIV-1 specific staggered PCR step that uses primers specific to the HIV-1 mutagenized region containing overhangs with a complex 10 ‘N’ nucleotide tag with two keto “K” or amino “M” nucleotide positions that identify the specific fragment and population, respectively. PCR products from step one are pooled, the amplicon molecule concentration is accurately measured, and then decreased for error correction. The pooled sample is then used as template for a second PCR using a single primer set containing the remainder of the Illumina adapter region for NGS.