Journal: bioRxiv
Article Title: uSort–M: Scalable isolation of user-defined sequences from diverse pooled libraries
doi: 10.64898/2026.01.12.699065
Figure Lengend Snippet: A . Schematic illustrating 328-variant human acylphosphatase 2 (hAcyP) library processing, including (1) assembly, (2) transformation, and (3) FACS sorting. Left scatter plot: selection of cell events by gating the distribution of side scatter area (SSC-A) vs . forward scatter area (FSC-A) values. Right scatter plot: selection of singlets from gating the distribution of forward scatter height (FSC-H) vs . FSC-A. B . Histogram of the number of wells as a function of measured OD 600 values. Wells with bacterial growth (green bars representing 2,057 wells) were defined as having OD 600 > 0.052 (grey vertical line). Inset pie chart indicates fraction of wells with (green, 67%) and without (grey, 33%) growth. C . Plate-well barcoding scheme for multiplexed sequencing of variant DNA in each well. Three iterations of PCR encode source plate and well location on each read. D . Number of demultiplexed MiSeq reads (sequencing depth) vs . well OD 600 ; marker color indicates plate of origin; vertical and horizontal lines are shown for OD 600 = 0.052 and sequencing depth = 100, respectively. Histogram (left) indicates number of wells with a given read depth. E . Scatter plot comparing number of reads per well from demultiplexed MiSeq data vs . Nanopore data; annotation specifies Pearson correlation coefficient. F . Read alignment plots from a representative well comparing paired-end MiSeq data and long-read Nanopore data. Sequence positions are aligned along the x-axes of each plot, with bases matching the reference are colored in light blue, mismatches in black, and empty positions in white. Top : read schematic showing aligned positions corresponding to the hAcyP2 WT reference sequence (light blue), called variant for the given well (red), and DNA appended during indexing (dark blue). Middle : Subsampled paired-end MiSeq reads ordered by orientation, with forward reads on top and reverse reads on bottom. Bottom : Subsampled Nanopore reads. G . Quantified fidelity across all reads from all wells, defined as the frequency of finding a mismatch outside of the called variant bases. Each point shows the fidelity of a single read, boxes denote the median, 25 th , and 75 th percentiles of the distribution, and error bars represent the standard deviation. H . Number of variants recovered for the 328-member library from MiSeq or Nanopore data.
Article Snippet: Sequencing costs were calculated using Plasmidsaurus Custom Sequencing pricing, which starts at $500 for 1 gigabase of sequencing and increases by $50 for each added gigabase (as of 2025; https://www.plasmidsaurus.com/custom ).
Techniques: Variant Assay, Transformation Assay, Selection, Sequencing, Marker, Standard Deviation