Why Choose Nanopore Ultra-Long Sequencing?

Conventional sequencing technologies often struggle to resolve highly repetitive regions, structural rearrangements, and polyploid genomes, resulting in fragmented assemblies and unresolved genomic gaps. These limitations can reduce the accuracy of downstream analyses, including genome annotation, structural variant detection, and comparative genomics.

Nanopore Ultra-Long Sequencing overcomes these challenges by generating exceptionally long DNA reads that can span centromeres, telomeres, repeat-rich regions, and large structural variants in a single continuous read. This enables researchers to produce highly contiguous, chromosome-scale, and even telomere-to-telomere (T2T) genome assemblies with greater confidence.

The ability to resolve complete genome structures has made ultra-long sequencing an invaluable tool for plant and animal genomics, microbial research, evolutionary biology, agriculture, and biomedical sciences.

Technical Specifications

*Performance depends on sample quality, DNA integrity, library preparation, and sequencing configuration.

Why Partner with N2Jenomics Lab Pvt. Ltd.?

N2Jenomics Lab Pvt. Ltd. combines optimized laboratory workflows with advanced Oxford Nanopore sequencing technology to maximize read length, data quality, and assembly continuity.

Key Advantages

• Gap-Minimized Genome Assemblies

Ultra-long reads span repetitive and GC-rich regions, enabling highly contiguous genome assemblies with fewer unresolved gaps.

• Comprehensive Structural Variant Detection

Accurately identify large insertions, deletions, inversions, translocations, repeat expansions, and other complex genomic rearrangements.

• Polyploid & Complex Genome Analysis

Optimized workflows support haplotype resolution and genome assembly for complex plant, animal, and polyploid genomes.

• Telomere-to-Telomere Genome Assembly

Generate chromosome-scale assemblies that improve genome completeness and annotation accuracy.

• Latest Nanopore Chemistry

Projects are performed using the latest Oxford Nanopore ultra-long sequencing chemistry and optimized protocols to maximize sequencing performance.

• High-Molecular-Weight DNA Expertise

Specialized laboratory procedures preserve ultra-high-molecular-weight DNA from diverse sample types, including plants, animals, microbes, and cultured cells.

• Optimized Library Preparation

Carefully optimized DNA repair and library construction workflows help maintain long DNA fragments and maximize sequencing yield.

• Advanced Sequencing Platforms

Access to PromethION and GridION platforms provides scalable sequencing capacity for projects ranging from individual genomes to large research studies.

• Complete End-to-End Support

Our team provides project consultation, sample quality assessment, sequencing, bioinformatics analysis, and publication-ready reports, ensuring a seamless experience from sample submission to final data delivery.

Representative Research Applications

Our Nanopore Ultra-Long Sequencing service supports a wide range of complex genome projects across plant, animal, microbial, and biomedical research. The examples below illustrate the types of applications and outcomes that ultra-long read sequencing can enable.

Project performance varies depending on sample quality, sequencing depth, genome complexity, and analysis strategy.

Research Applications

Nanopore Ultra-Long Sequencing provides exceptional value for projects involving complex genomes and difficult-to-sequence regions.

• De Novo Genome Assembly

Generate highly contiguous genome assemblies by spanning repetitive sequences, GC-rich regions, and unresolved genomic gaps.

• Structural Variant Analysis

Detect large insertions, deletions, inversions, translocations, repeat expansions, and other complex genomic rearrangements with high confidence.

• Polyploid Genome Research

Improve haplotype phasing and genome assembly accuracy for polyploid plants, hybrids, and other genetically complex organisms.

• Telomere-to-Telomere (T2T) Assembly

Support chromosome-scale genome assemblies by resolving telomeres, centromeres, ribosomal DNA arrays, and other repetitive genomic regions.

• Multi-Omics Integration

Combine ultra-long genome sequencing with Nanopore Direct RNA Sequencing or Full-Length Transcriptome Sequencing to investigate the relationship between genome structure, gene expression, and transcript diversity.

Bioinformatics Analysis

N2Jenomics Lab Pvt. Ltd. provides a comprehensive bioinformatics workflow for Nanopore Ultra-Long Sequencing, transforming raw sequencing data into high-quality genome assemblies and biologically meaningful insights. Our analysis pipeline is optimized for ultra-long reads, enabling accurate genome reconstruction, structural variant detection, and advanced downstream analyses.

Standard Analysis

Advanced Analysis (Optional)

Deliverables

Each project includes comprehensive sequencing data and analysis outputs.

• • Raw sequencing data (FASTQ)

• • Quality control report with sequencing statistics (yield, read length, N50, quality metrics)
• • Alignment files (BAM) (optional)
• • Genome assembly files (optional)
• • Structural variant and annotation reports (optional)
• • DNA methylation analysis (optional)
• • Publication-ready figures and visualizations
• • Comprehensive project report with methods and analysis summary

Sample Requirements

To maximize read length and sequencing performance, high-quality ultra-high-molecular-weight (uHMW) DNA is strongly recommended.

Sample Preparation Guidelines

To obtain the highest-quality sequencing data, we recommend:

• • Using fresh or properly preserved samples whenever possible.
• • Minimizing DNA degradation during collection and transport.
• • Avoiding repeated freeze–thaw cycles.
• • Maintaining samples under recommended cold-chain conditions during shipment.
• • For plant tissues, removing surface contaminants before processing and rapidly freezing samples to preserve DNA integrity.

• Our technical specialists are available to review sample quality, recommend optimal preparation methods, and assist with custom sample types or challenging genome projects.

1. What read lengths can I expect from Nanopore Ultra-Long Sequencing?

Nanopore Ultra-Long Sequencing routinely generates N50 read lengths of over 50–100 kb, depending on sample quality and library preparation. Under optimized conditions, individual reads can exceed 4 Mb, enabling comprehensive analysis of highly complex genomic regions.

2. Why are ultra-long reads important for genome assembly?

Ultra-long reads can span repetitive regions, centromeres, telomeres, and other difficult genomic sequences that are challenging for short-read technologies. This improves assembly continuity, reduces unresolved gaps, and supports chromosome-scale and telomere-to-telomere (T2T) genome assemblies.

3. How does ultra-long sequencing improve structural variant detection?

Because long reads span large genomic regions, they enable accurate identification of structural variants, including large insertions, deletions, inversions, translocations, repeat expansions, and complex genomic rearrangements that may be difficult to resolve using short-read sequencing.

4. Can Nanopore sequencing be used for both DNA and RNA analysis?

Yes. Oxford Nanopore technology supports sequencing of both DNA and RNA. Depending on your research goals, we also offer complementary services such as Direct RNA Sequencing, Full-Length Transcriptome Sequencing, and Targeted Sequencing to provide integrated genomic and transcriptomic insights.

5. What sample quality is required for ultra-long sequencing?

High-quality ultra-high-molecular-weight (uHMW) DNA is essential for achieving the longest possible reads. Samples should exhibit minimal degradation, high purity, and long DNA fragments. Our laboratory provides detailed sample preparation guidelines and quality assessment to maximize sequencing performance.

6. Which sample types are suitable for this service?

We support a wide range of sample types, including plant tissues, animal tissues, blood, cultured cells, microbial samples, and other high-quality genomic DNA. Our scientists can recommend the most appropriate extraction strategy based on your sample type and research objectives.

7. What applications are best suited for Nanopore Ultra-Long Sequencing?

This technology is ideal for de novo genome assembly, telomere-to-telomere (T2T) genome projects, structural variant analysis, polyploid genome assembly, repeat region characterization, haplotype phasing, comparative genomics, and complex genome research.

8. Is Nanopore sequencing suitable for high-throughput and portable workflows?

Yes. Oxford Nanopore technology offers scalable sequencing solutions ranging from portable instruments for small projects to GridION and PromethION platforms for high-throughput genome sequencing. This flexibility allows workflows to be tailored to different project sizes and sequencing requirements.