EZcircular Instructions


EZcircular takes a mitochondrial genome annotation file (BED or GFF3) and a reference FASTA sequence to:

  1. Auto-detect the annotation format (BED or GFF3) and convert if needed.
  2. Validate and parse the annotation.
  3. Append 100 Ns and an artificial feature if the genome is linear.
  4. Locate the starting gene and reorder the FASTA sequence.
  5. Generate an updated BED file with correct coordinates.
  6. Produce circular or linear genome maps based on the topology.
  • Annotation file (BED or GFF3): EZcircular accepts both formats and converts automatically.
    • BED — 6 fields: chrom, chromStart, chromEnd, name, score, strand (.bed, .txt)
    • GFF3 — standard GFF3 with ##gff-version 3 header (.gff, .gff3). Check here for GFF3 format.
  • FASTA file: Containing only the reference genome sequence (.fasta, .fa, .fsa, .fas, .fna, .ffn, .faa, .frn).
  • If the genome is incomplete, select linear topology.

Upload Your Files


Drag & drop BED or GFF3 file here
or click to select
Drag & drop FASTA file here
or click to select

*If not provided, a random job ID will be assigned.