General Feature Format

The general feature format (gene-finding format, generic feature format, GFF) is a file format used for describing genes and other features of DNA, RNA and protein sequences. The filename extension associated with such files is .GFF.

There are two versions of the GFF file format in general use:

  • General Feature Format Version 2 (Sanger Institute)
  • Generic Feature Format Version 3 (Sequence Ontology Project)

Servers that generate this format:

Server Example file
Expasy

Clients that use this format:

Name Description Links
GBrowse GMOD genome viewer GBrowse
IGB Integrated Genome Browser Integrated Genome Browser
Jalview A multiple sequence alignment editor & viewer Jalview
STRAP Underlining sequence features in multiple alignments. Example output:

Read more about General Feature Format:  GFF Versions, Validation

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