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Whole Genome Sequencing

Whole Genome Sequencing

High-Depth NGS for Microbial Variant Analysis

Overview

Quintara Deep Microbial WGS provides flexible short-read NGS coverage for cultured bacterial and yeast samples, with 30×, 300×, and 1,000× options to support different sequencing and variant-analysis needs. The workflow uses paired-end NGS reads for reference-based analysis, enabling detection of SNVs and short indels, with higher coverage supporting more sensitive allele-frequency and low-frequency variant analysis. Deep Microbial WGS is well suited for monitoring genetic changes across isolates, passages, time points, or engineered strains, as well as analyzing non-perfectly clonal microbial populations.


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What Is Deep NGS WGS Used For?


Detect

Identify small sequence variants


Measure

Quantify allele frequencies


Monitor

Track genetic changes over time

Detect SNVs and short indels

Verify expected engineered edits


Detect low-frequency variants

Assess minority alleles in evolving populations


Monitor serial passages and production lots

Compare related isolates across time points


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Workflow

From genomic DNA QC and library preparation to high-depth NGS sequencing, reference mapping, and variant analysis, the workflow delivers reliable data for microbial genome analysis.

Services



Service

Coverage

Sample Type

Price

Turnaround Time

Deep Microbial WGS

30x

300x

1000x

Bacteria

Starting from $75

5-10 Business Days

Yeast

Starting from $105


* Your project clock starts once we receive your samples.

* DNA Extraction — $15 per sample. Available for both service options.


Service Specifications​

FAQ

What does 1,000× coverage mean for low-frequency variants?

It increases the number of observations at many positions, but the practical detection limit also depends on sequencing and library errors, mapping quality, strand balance, local sequence context, contamination, and the analysis pipeline.

Can Deep Microbial WGS generate a complete genome because it has 1,000× coverage?

Not reliably. Short reads can provide very deep evidence, but repeated regions longer than the reads can still prevent unambiguous assembly. Long-Read or Hybrid is the better choice for genome completion.


Can Deep Microbial WGS detect low-frequency variants?

Yes. The 1,000× workflow provides deep sequencing evidence that can support low-frequency variant detection. However, the practical detection limit depends on sequencing and library errors, mapping quality, local sequence context, contamination, and the analysis pipeline.


Does higher coverage always provide better variant detection?

Not necessarily. Higher coverage increases the number of observations, but additional reads provide diminishing value when technical errors, mapping limitations, or other sources of background noise become the limiting factors.


Does Deep Microbial WGS require a reference genome?

Yes. Deep Microbial WGS is designed for reference-based analysis and requires a close, biologically appropriate reference genome for reliable variant detection and interpretation.


What variants can Deep Microbial WGS detect?

Deep Microbial WGS is primarily designed for SNVs and short indels. Higher coverage can also support allele-frequency analysis and detection of low-frequency variants when the analysis pipeline and reporting thresholds are appropriately validated.


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