What Is Shotgun Metagenomic Sequencing?

Shotgun metagenomic sequencing is a comprehensive method that analyzes all DNA present in a sample, enabling the detection of bacteria, viruses, fungi, and archaea without using targeted primers.

It provides detailed insights into microbial diversity, functional genes, and metabolic pathways, making it ideal for studying complex microbiomes in soil, water, the human gut, skin, and other environments. The approach also helps identify novel microorganisms and rare genetic functions that targeted sequencing may miss.

Why Choose Shotgun Metagenomic Sequencing?

Shotgun metagenomic sequencing offers a complete view of microbial communities by analyzing all DNA within a sample. It delivers high-resolution taxonomic and functional insights, making it ideal for advanced microbiome research.

Key Benefits

• • Primer-free sequencing of all microbial DNA

• • Strain-level identification of bacteria and archaea
• • Functional gene and metabolic pathway analysis
• • Detection of viruses, fungi, and unculturable microbes
• • Discovery of novel organisms and genes
• • Data suitable for multi-omics and advanced bioinformatics

Shotgun vs. Amplicon Sequencing

Our Shotgun Metagenomic Services

Choose the sequencing approach that best fits your research objectives.

• Standard Shotgun Sequencing

• - Broad microbial profiling
• - Taxonomic and functional analysis
• - Suitable for diverse sample types

• Long-Read Metagenomics

• - Improved genome assembly
• - Better resolution of complex regions
• - Ideal for diverse microbial communities

• Viral Metagenomics

• - Sensitive viral detection
• - Identification of rare and emerging viruses
• - Comprehensive virome analysis

Workflow

• Project Planning – Study consultation and experimental design.

• Sample QC – Sample registration, DNA quality assessment, and optional DNA extraction.

• Library Preparation – DNA fragmentation, library construction, and quality validation.

• Sequencing – High-throughput sequencing with customizable read depth.

• Data Delivery – Raw data, analysis reports, and publication-ready results.

Bioinformatics Analysis

Standard Analysis

• • Sequence quality control
• • Host DNA removal
• • Genome assembly
• • Gene prediction and abundance analysis
• • Taxonomic profiling
• • Functional annotation (KEGG, eggNOG, CAZy, ARDB)
• • Diversity and community analysis

Advanced Analysis (Optional)

• • Differential abundance analysis
• • Biomarker identification (LEfSe)
• • Environmental association analysis
• • PCA, PCoA, NMDS, clustering
• • Statistical testing and publication-ready visualizations

Applications

Shotgun metagenomic sequencing supports a wide range of research areas, including:

• • Microbial diversity profiling
• • Functional gene and pathway discovery
• • Novel microbe and pathogen identification
• • Microbiome-environment interaction studies
• • Antibiotic resistance gene surveillance
• • Industrial strain screening and biotechnology research

Sample Requirements

Recommendations

• • Ship samples on dry ice.
• • DNA extraction services are available.
• • Contact us for low-input or specialized sample types.

Why Choose N2Jenomics Lab Pvt. Ltd.?

• • Comprehensive end-to-end sequencing solutions

• • Flexible short-read and long-read platforms
• • High-throughput processing capacity
• • Reliable quality control and data accuracy
• • Fast turnaround times
• • Experienced bioinformatics and technical support
• • Customizable workflows tailored to your research

• From microbiome profiling to novel microbial discovery, N2Jenomics Lab Pvt. Ltd. delivers accurate sequencing data and actionable biological insights for research and innovation.

1. How can host DNA contamination be reduced?

Collect samples carefully to minimize host tissue contamination and consider using host DNA depletion methods. When a host reference genome is available, contaminating reads can be removed during bioinformatics analysis. High levels of contamination may affect data quality and should be addressed before sequencing.

2. Why choose shotgun metagenomics over single-genome sequencing?

Shotgun metagenomics analyzes entire microbial communities without the need for culturing. It provides comprehensive taxonomic and functional insights, making it ideal for studying complex microbial ecosystems.

3. What is the difference between 16S sequencing and shotgun metagenomics?

16S sequencing identifies bacterial communities using a targeted gene, while shotgun metagenomics sequences all microbial DNA, including bacteria, fungi, viruses, and archaea. It offers higher taxonomic resolution and functional analysis but requires greater sequencing depth.

4. How do I select the right sequencing depth?

The optimal sequencing depth depends on your sample type and research objectives. Complex samples generally require deeper sequencing. Our experts will recommend the most suitable read length and coverage for your project.

5. How is sequencing quality maintained?

We follow strict quality control throughout DNA extraction, library preparation, sequencing, and data analysis. Every dataset is thoroughly checked to ensure reliable, publication-ready results.

6. Do you provide bioinformatics analysis?

Yes. We offer customizable bioinformatics services, including taxonomic profiling, functional annotation, antimicrobial resistance analysis, statistical testing, and advanced data visualization to meet your research needs.