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To upload files, drag and drop all files into the upload box, or select your files by first clicking the Add Files button.


Submit all files for your analysis together (ie. multiple samples) to speed up processing time and perform cross-sample analyses.


BugSeq supports all standard sequencing file formats. The following file formats are currently accepted:

  • FASTQ: Basecalled nanopore, PacBio or Illumina sequences
    • Acceptable file extensions:
      • Uncompressed: .fq, .fastq
      • Compressed: .fq.gz, .fastq.gz
    • Note: only DNA/RNA sequencing data with IUPAC notation is acceptable.
  • FAST5: Raw nanopore sequencing data
    • Acceptable file extensions: .fast5


Illumina data must be paired-end and contain separate files for forward and reverse reads. These files must have names with format {SAMPLE_NAME}_R[1/2].fastq[.gz], {SAMPLE_NAME}_[1/2].fastq[.gz] or {SAMPLE_NAME}_L[/d]+_R[1/2]_001.fastq[.gz].


Uploading gzip compressed files will reduce transfer time of large files to BugSeq.

Read Preprocessing

As BugSeq performs automatic read preprocessing and leverages all aspects of the input data to produce optimal results, we recommend against any data manipulation before submitting to BugSeq. For example, BugSeq uses FASTQ quality information to correct reads, yielding optimal assemblies. BugSeq is built to handle raw data, saving our users time and complexity before data submission while ensuring optimal results.

Experimental Design


You may submit files from any Oxford Nanopore, PacBio or Illumina sequencer.

BugSeq will automatically detect the sequencing platform and perform tailored, best-practice analyses. The following processes are adjusted based on platform:

  • Basecalling
  • Demultiplexing
  • Quality evaluation
  • Adapter trimming
  • Quality trimming and filtering
  • Metagenomic classification
  • Alignment
  • Assembly
  • Taxonomic binning
  • Post-assembly analyses, including:
    • Antimicrobial resistance prediction
    • Strain typing
    • Other pathogen-specific analyses

Sequencing Strategy

BugSeq supports all widely accepted sequencing strategies. These include:

  • Metagenomic/Metatranscriptomic Sequencing
  • Whole Genome Sequencing (WGS)
  • Amplicon Sequencing
    • 16S/ITS
    • MLST
    • Viral amplicons

Sequenced material can be DNA or RNA. Nucleic acid can be sequenced directly or amplified with techniques such as PCR.


BugSeq automatically performs demultiplexing and adapter trimming on nanopore sequencing data. Illumina and PacBio data should already be demultiplexed before submission, but may have adapters, as BugSeq trims these automatically.

Strict (dual-barcode) nanopore demultiplexing

BugSeq parses FASTQ headers for barcoding data. Occasionally, users may want BugSeq to perform strict demultiplexing of nanopore data, looking for barcodes on both ends of reads. Users should either perform strict demulitplexing before submitting to BugSeq, or perform no demultiplexing before submitting to BugSeq. Files which have already been demultiplexed with default (single-ended barcode) demultiplexing will not be further demultiplexed by BugSeq.

New Designs

Don’t see your experimental design combination here? Get in touch with us via support.

Last update: March 22, 2022