PacBio SMRT Sequencing

PacBio SMRT Sequencing Services — Long-Read Accuracy Without Compromise

N2Jenomics Lab Pvt. Ltd. offers PacBio HiFi Sequencing, a next-generation long-read sequencing technology that combines single-molecule sequencing with high consensus accuracy. HiFi sequencing delivers highly accurate long reads suitable for complex genome assembly, structural variant detection, full-length transcript sequencing, and genome-wide DNA methylation analysis within a single integrated workflow.

Designed for applications that demand both read length and precision, PacBio HiFi Sequencing enables researchers to generate high-quality genomic and transcriptomic data for plant, animal, microbial, and biomedical research.

What Makes PacBio HiFi Sequencing Different?

• High-Accuracy Consensus Reads

Each DNA molecule is sequenced multiple times to generate HiFi consensus reads with exceptionally high accuracy (typically QV30 or higher), providing reliable variant detection and genome assembly.

• Simultaneous Genetic and Epigenetic Insights

HiFi sequencing can generate both sequence variation and genome-wide DNA methylation (5mC) information from the same sequencing run, reducing the need for additional experimental workflows.

• True Full-Length Transcript Analysis

PacBio HiFi technology captures complete transcript isoforms from the transcription start site (TSS) to the poly(A) tail in a single continuous read, enabling accurate isoform identification without relying on computational transcript reconstruction.

• Ideal for Complex Genomes

The combination of long read lengths and high accuracy makes HiFi sequencing particularly effective for de novo genome assembly, structural variant analysis, haplotype phasing, repetitive region resolution, and telomere-to-telomere (T2T) genome projects.

• End-to-End Sequencing & Bioinformatics Support

From project design and library preparation to sequencing, advanced bioinformatics analysis, and publication-ready reporting, N2Jenomics Lab Pvt. Ltd. provides a complete PacBio HiFi sequencing solution tailored to your research objectives.

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PacBio SMRT Sequencing Services — Long-Read Accuracy Without Compromise

Why Choose PacBio HiFi Sequencing?

Many sequencing technologies require researchers to compromise between read accuracy and read length. Short-read platforms deliver excellent base-level accuracy but often struggle with repetitive regions, structural variants, and complete transcript reconstruction. Conventional long-read technologies overcome many of these limitations but may require additional error correction for certain applications.

PacBio HiFi Sequencing combines the advantages of both approaches by generating highly accurate long reads, making it an ideal solution for genome assembly, variant discovery, haplotype phasing, full-length transcript sequencing, and epigenetic analysis.

The Science Behind PacBio HiFi Sequencing

PacBio HiFi Sequencing is based on Single Molecule, Real-Time (SMRT®) sequencing, which monitors DNA synthesis at the level of individual DNA molecules.

Sequencing occurs within specialized Zero-Mode Waveguides (ZMWs)—nanostructures that enable real-time observation of a single DNA polymerase as it incorporates fluorescently labeled nucleotides. Unlike sequencing methods that rely on amplified DNA fragments, SMRT technology sequences individual DNA molecules directly, producing highly accurate long-read data.

To generate HiFi reads, DNA fragments are converted into SMRTbell® libraries, where each DNA molecule is circularized. The DNA polymerase repeatedly sequences the same molecule multiple times, and these repeated observations are combined into a single high-fidelity (HiFi) consensus read. This approach delivers both the long read lengths required for complex genomic analysis and the high accuracy needed for confident variant detection.

Key Advantages of PacBio HiFi Sequencing

• Highly Accurate Long Reads

Generate long sequencing reads—typically 10–25 kb, depending on sample quality and library preparation—with QV30 or higher consensus accuracy for reliable genome analysis.

• Simultaneous Genetic and Epigenetic Analysis

HiFi sequencing can identify genetic variants while also detecting genome-wide 5-methylcytosine (5mC) DNA methylation from the same sequencing run, eliminating the need for separate methylation-specific library preparation.

• True Full-Length Transcript Sequencing

Using Iso-Seq workflows, complete RNA transcripts are sequenced from the transcription start site (TSS) to the poly(A) tail in a single read, enabling precise isoform identification without transcript reconstruction.

• Comprehensive Genome Analysis

HiFi sequencing supports:

• De novo genome assembly
• Structural variant detection
• Haplotype phasing
• Repeat region characterization
• Telomere-to-telomere (T2T) genome assembly
• Comparative and population genomics

Advantages Over Other Sequencing Technologies

Feature	Short-Read Sequencing	Conventional Long-Read Sequencing	PacBio HiFi Sequencing
Read Length	Short reads	Long reads	Highly accurate long reads
Consensus Accuracy	Very high	Variable	Typically QV30 or higher
De Novo Genome Assembly	Limited for complex genomes	Good	Excellent for complex and repetitive genomes
Structural Variant Detection	Limited	Strong	High sensitivity with excellent accuracy
Haplotype Phasing	Limited	Good	Excellent
Full-Length Transcript Analysis	Requires transcript assembly	Supported	Direct sequencing of complete transcript isoforms
Native DNA Methylation Detection	Requires separate workflows	Platform dependent	Simultaneous 5mC detection in compatible HiFi workflows

One Platform, Multiple Insights

PacBio HiFi Sequencing enables researchers to generate multiple layers of biological information from a single integrated workflow, including:

• High-accuracy long-read DNA sequences
• Small variants (SNPs and indels)
• Structural variants
• Haplotype-resolved genomes
• Genome-wide DNA methylation (5mC)
• Full-length transcript isoforms
• Chromosome-scale genome assemblies

By combining exceptional sequencing accuracy with long-read performance, PacBio HiFi Sequencing provides a powerful solution for researchers working on complex genomes, precision genomics, transcriptomics, epigenetics, and advanced genomic discovery.

Applications of PacBio HiFi Sequencing

PacBio HiFi Sequencing combines long read lengths with exceptional accuracy, making it the preferred technology for research projects that require reliable genome assembly, structural variant detection, transcript characterization, and epigenetic analysis. It is particularly valuable for applications where short-read sequencing or conventional long-read methods may have limitations.

• De Novo Genome Assembly

Generate highly contiguous and accurate genome assemblies by spanning repetitive and structurally complex genomic regions.

- Chromosome-scale and telomere-to-telomere (T2T) genome assembly
- Gap reduction and improved genome completeness
- High-quality reference genome construction
- Integration with Hi-C for chromosome-level scaffolding

Recommended Services: De Novo Whole Genome Sequencing, T2T Genome Sequencing, Plant & Animal Whole Genome Sequencing

• Structural Variant Analysis

Identify complex genomic rearrangements with high confidence.

- Large insertions and deletions
- Inversions and translocations
- Copy number variations
- Repeat expansions and complex structural variants

Recommended Services: Human Whole Genome Sequencing, De Novo Whole Genome Sequencing

• Haplotype Phasing

Resolve maternal and paternal haplotypes using long, highly accurate reads.

- Haplotype-resolved genome assembly
- Allele-specific variant analysis
- Improved interpretation of complex genomic regions
- Population and evolutionary genomics

Recommended Services: Human Whole Genome Sequencing, HiFi Sequencing, Long Amplicon Analysis (LAA)

• Full-Length Transcriptome Sequencing

Capture complete RNA transcripts in single reads without transcript reconstruction.

- Full-length isoform identification
- Alternative splicing analysis
- Fusion transcript detection
- Novel transcript discovery
- Gene expression profiling

Recommended Services: Iso-Seq and Kinnex Full-Length Transcript Sequencing

• DNA Methylation Analysis

Obtain genetic and epigenetic information from the same sequencing workflow.

- Genome-wide 5-methylcytosine (5mC) profiling
- Epigenetic regulation studies
- DNA methylation integrated with variant analysis
- No bisulfite conversion required in compatible workflows

Recommended Services: PacBio HiFi Whole Genome Sequencing

• Microbiome & Metagenomics

Characterize microbial communities with high taxonomic resolution.

- Full-length 16S, 18S, and ITS sequencing
- Species-level microbial identification
- Metagenome-assembled genome (MAG) generation
- Functional microbiome analysis

Recommended Services: Full-Length Amplicon Sequencing, Long-Read Metagenomic Sequencing

• Targeted Sequencing

Generate high-depth sequencing data for selected genomic regions.

- Variant validation
- Repeat expansion analysis
- Allele-specific characterization
- Targeted gene sequencing

Recommended Services: Long Amplicon Analysis (LAA), HiFi Targeted Sequencing, Pre-Made Library Sequencing

• Pan-Genome & Population Genomics

Support large-scale comparative genomics and diversity studies.

- Pan-genome construction
- Comparative genome analysis
- Structural variant discovery across populations
- Agricultural and evolutionary genomics

Recommended Services: De Novo Whole Genome Sequencing, T2T Genome Sequencing, Plant & Animal Whole Genome Sequencing

Deliverables

Every PacBio HiFi project includes high-quality sequencing data together with comprehensive bioinformatics outputs that are ready for downstream analysis and publication.

Data Category	Deliverables
HiFi Reads	High-accuracy FASTQ and BAM files with quality metrics
Raw Sequencing Data	Subread BAM files (available upon request)
Quality Control Report	Sequencing yield, read-length distribution, N50, Q-score statistics, CCS metrics, and barcode summary (where applicable)
Genome Assembly	FASTA/GFA files with assembly statistics, including N50, NG50, and completeness assessment
Variant Analysis	VCF files containing SNPs, indels, structural variants, and phased variants (optional)
DNA Methylation Analysis	Genome-wide methylation profiles and summary reports (optional)
Transcriptome Analysis	Full-length isoform annotation, GTF/GFF3 files, expression matrices, and fusion transcript reports (Iso-Seq projects)
Project Report	Comprehensive methodology, sequencing parameters, software versions, QC summary, and publication-ready figures

PacBio HiFi Sequencing Workflow

N2Jenomics Lab Pvt. Ltd. provides a complete end-to-end PacBio HiFi sequencing workflow, from sample evaluation to final data delivery.

1. Sample Quality Assessment

• DNA or RNA quality evaluation
• Concentration measurement using fluorometric methods
• Purity assessment
• Integrity verification according to project requirements

2. Library Preparation

• SMRTbell® library construction
• Size selection optimized for the application
• Sample barcoding for multiplexed projects when required
• Specialized Iso-Seq and Kinnex library preparation for transcriptome analysis

3. PacBio SMRT Sequencing

• Sequencing performed on PacBio Sequel IIe or Revio platforms
• Optimized SMRT Cell loading for maximum sequencing efficiency
• Real-time monitoring throughout the sequencing run

4. HiFi Read Generation

Circular Consensus Sequencing (CCS) converts multiple sequencing passes into highly accurate HiFi consensus reads suitable for downstream analysis.

5. Bioinformatics Analysis

Depending on the selected service, analyses may include:

• Quality assessment
• Genome assembly
• Variant detection
• Haplotype phasing
• DNA methylation profiling
• Isoform identification
• Functional annotation
• Data visualization

6. Data Delivery

Clients receive organized sequencing data, analysis reports, publication-ready figures, and optional consultation with our bioinformatics specialists.

Sample Requirements

Service	Recommended Sample Input	Quality Requirements	Shipping Conditions	Notes
Microbial Whole Genome Sequencing	≥1 μg high-quality genomic DNA	High molecular weight DNA; A260/280: 1.8–2.0	Ship at −20°C	Fresh DNA preferred
Plant & Animal Whole Genome Sequencing	≥3–5 μg high-molecular-weight DNA	A260/280: 1.8–2.0; A260/230 ≥2.0	Ship at −20°C	Avoid excessive pipetting or vortexing
Human Whole Genome Sequencing	≥1–3 μg genomic DNA	High molecular weight DNA	Ship at −20°C	Minimize DNA degradation
Telomere-to-Telomere (T2T) Genome Sequencing	≥3–5 μg ultra-high-molecular-weight DNA	DNA fragments ≥50 kb recommended	Ship at −20°C	Handle gently to prevent shearing
Iso-Seq / Kinnex Transcriptome Sequencing	500 ng–1 μg total RNA	RNA Integrity Number (RIN) ≥8	Ship at −80°C on dry ice	DNase treatment recommended when appropriate
16S/18S/ITS Amplicon Sequencing	50–200 ng purified amplicons	Free of primer dimers and non-specific products	Ship at 4°C	Include primer information
Long-Read Metagenomic Sequencing	500 ng–1 μg genomic DNA	High-quality DNA with minimal host contamination	Ship at −20°C	Host depletion may improve results
HiFi Targeted Sequencing / LAA	1–2 μg genomic DNA or ≥100 ng purified amplicons	Application dependent	Ship at −20°C or 4°C	Provide target region information
Pre-Made SMRTbell Libraries	≥50 ng prepared SMRTbell library	QC report recommended	Ship at −20°C	Libraries undergo incoming quality assessment before sequencing

Sample Submission Guidelines

• Clearly label each sample with a unique sample identifier.
• Use leak-proof tubes and secure packaging.
• Avoid repeated freeze–thaw cycles.
• Include a completed sample submission form with project information.
Contact our technical team if your samples have limited quantity or require customized handling.

1. What makes PacBio HiFi Sequencing different from other long-read sequencing technologies?

PacBio HiFi Sequencing combines long read lengths with exceptionally high consensus accuracy by sequencing each DNA molecule multiple times and generating a single high-fidelity (HiFi) consensus read. This approach delivers highly accurate long reads that are ideal for genome assembly, variant detection, haplotype phasing, and other complex genomic analyses. In addition, compatible HiFi workflows can simultaneously detect 5-methylcytosine (5mC) DNA methylation without requiring separate library preparation.

2. How does PacBio HiFi compare with short-read sequencing?

PacBio HiFi provides high per-base accuracy comparable to leading short-read technologies while producing reads that are substantially longer. This combination enables accurate detection of single-nucleotide variants (SNVs), insertions and deletions (indels), structural variants, repetitive regions, and complete haplotypes, making it particularly valuable for complex genome analysis and de novo genome assembly.

3. Can PacBio HiFi detect DNA methylation?

Yes. PacBio HiFi sequencing can detect genome-wide 5mC DNA methylation by analyzing polymerase kinetic signals generated during sequencing. This allows researchers to obtain both genetic variation and epigenetic information from the same sequencing run without bisulfite conversion or additional sequencing libraries in compatible workflows.

4. What is Iso-Seq, and when should I choose it?

Iso-Seq is PacBio's full-length transcript sequencing workflow that captures complete RNA transcripts from the transcription start site (TSS) to the poly(A) tail in single reads. It is particularly useful for identifying transcript isoforms, alternative splicing events, fusion transcripts, novel transcripts, and transcript diversity that may be difficult to resolve using conventional short-read RNA sequencing.

5. What sample quality is recommended for PacBio HiFi Sequencing?

High-quality, high-molecular-weight DNA is recommended for optimal sequencing performance. While input requirements vary depending on the application, genome size, and library type, intact DNA with minimal degradation generally produces the best results. For transcriptome projects, high-quality total RNA with appropriate integrity is recommended. Our technical team can advise on sample requirements for your specific project.

6. How long does a typical PacBio HiFi project take?

Project timelines depend on factors such as sample type, library preparation, sequencing scale, and bioinformatics analysis. During project planning, we provide an estimated turnaround time tailored to your study and sequencing requirements.

7. Which PacBio sequencing platforms do you use?

We utilize advanced PacBio SMRT sequencing platforms, including the Sequel IIe and Revio systems, to support projects ranging from targeted sequencing to large-scale whole-genome and transcriptome studies. All sequencing runs undergo rigorous quality control to ensure reliable data generation.

8. Can I submit my own PacBio libraries for sequencing?

Yes. We accept customer-prepared SMRTbell® libraries through our sequencing-only service. Upon receipt, each library undergoes quality assessment before sequencing, and we provide high-quality HiFi data with optional downstream bioinformatics analysis.

9. Why choose N2Jenomics Lab Pvt. Ltd. for PacBio HiFi Sequencing?

N2Jenomics Lab Pvt. Ltd. provides a complete end-to-end PacBio HiFi sequencing solution, including project consultation, sample quality assessment, library preparation, sequencing, advanced bioinformatics, and publication-ready reporting. We also offer guidance on hybrid sequencing strategies, such as combining PacBio HiFi with Oxford Nanopore or short-read sequencing, when these approaches can improve genome assembly, structural variant detection, or other research outcomes.