Shotgun Metagenomics
What Is Shotgun Metagenomics?
Shotgun metagenomics is a powerful untargeted sequencing approach that profiles the entire genetic content of microbial communities directly from environmental, clinical, or host-associated samples. Unlike amplicon-based methods (such as 16S or ITS), which focus on a single gene region, shotgun sequencing fragments all DNA in the sample and sequences it comprehensively, capturing:
-
Bacterial, fungal, viral, and archaeal genomes
-
Functional genes, antibiotic resistance elements, and metabolic pathways
-
Strain-level variations that amplicon sequencing cannot resolve
Because it is not limited to taxonomic markers, shotgun metagenomics provides both taxonomic and functional profiling of microbial ecosystems, making it ideal for in-depth microbiome analysis.
At AUGenomics, we use high-throughput Illumina sequencing and advanced bioinformatics pipelines to deliver deep, unbiased profiles of microbial communities, from species identification to functional pathway analysis.
Advantages of Shotgun Metagenomics
01
Comprehensive Microbial Profiling: Captures bacteria, fungi, viruses, and archaea simultaneously.
02
Species & Strain Resolution: Detects microorganisms down to the strain level for high-resolution analysis.
03
Functional Insights: Identifies genes involved in metabolism, antibiotic resistance, and virulence.
04
Unbiased Approach: Does not rely on primers, reducing amplification bias.
05
Broad Sample Compatibility: Works with soil, water, stool, tissue, and other complex samples.
06
Quantitative Data: Provides relative abundance and functional gene quantification.
07
Detection of Rare Organisms: Sensitive enough to capture low-abundance microbial species.
08
Pathway-Level Analysis: Links microbial composition to functional capabilities through KEGG/GO analysis.
09
Customizable Depth: Sequencing depth tailored to the complexity of your samples and research goals.
Shotgun metagenomics is widely used to study microbial diversity and function in both basic and applied research. Applications include:
-
Human Microbiome Research: Comprehensive profiling of gut, skin, oral, and other microbiomes.
-
Infectious Disease Diagnostics: Identifying pathogens, co-infections, and antimicrobial resistance genes.
-
Environmental Microbiology: Assessing microbial diversity in soil, water, air, and built environments.
-
Agricultural Studies: Investigating microbiomes associated with plants, livestock, and agricultural soils.
-
Industrial Biotechnology: Monitoring microbial communities in fermentation, bioreactors, and wastewater.
-
Food Safety and Quality: Detecting contamination and microbial shifts in food production systems.
-
Viral Discovery: Capturing viral sequences alongside bacterial and fungal data in metagenomic datasets.
-
Antimicrobial Resistance (AMR) Surveillance: Profiling resistance genes across microbial populations.
What is Shotgun Metagenomics Used For?
Shotgun Metagenomics with AUGenomics
Sample Submission
Minimum 10–20 ng of microbial or cfDNA extracted from blood, urine, saliva, tissue, or environmental sources. Use appropriate sterile collection containers and store at –80°C.
Please refer to our Shipping Guidelines for project-specific guidance.
Turnaround Time
Typical turnaround for bacterial disease detection is 10–14 business days from sample receipt. Expedited options are available depending on project scope and sequencing depth.
Frequently Asked Questions (FAQs)
Q: Can this detect multiple bacteria at once?
A: Yes. Our metagenomic pipeline can simultaneously detect and classify multiple bacterial species from a single sample.
Q: How accurate is this compared to culturing?
A: Sequencing can identify hard-to-culture bacteria and offers greater sensitivity for detecting mixed infections.
Q: How is shotgun metagenomics different from 16S or ITS sequencing?
A: While 16S/ITS only profiles bacteria or fungi based on marker genes, shotgun metagenomics sequences all DNA in a sample, enabling species-level resolution and functional gene analysis.
Q: Can you detect viruses with shotgun metagenomics?
A: Yes. Unlike 16S, shotgun metagenomics can capture viral genomes, including bacteriophages and eukaryotic viruses.
Q: What sequencing depth do you recommend?
A: For standard microbial community profiling, we recommend 5–10 million reads per sample. For highly complex environments or strain-level resolution, deeper sequencing may be required.
Q: What sample types are accepted?
A: We accept a wide range of DNA sources, including stool, soil, water, swabs, tissue, and biofilm samples. Our team can provide guidance for optimal collection and shipping.
Got more questions? Contact our team and get a free consultation anytime. info@augenomics.com
Glossary of Terms
-
cfDNA: Cell-free DNA circulating in fluids like blood or urine
-
Metagenomics: Sequencing all genetic material in a sample to profile microbial content
-
Pathogen: A microorganism that causes disease
-
AMR genes: Genes that confer resistance to antibiotics
