text: DPVweb is an aid to researchers in the field of plant virology as well as an educational resource for students of virology and molecular biology.
  The site provides a single point of access for all known plant virus genome sequences making it easy to collect these sequences together for further analysis and comparison. Sequence data from the DPVweb database have proved valuable for a number of projects:
  # survey of codon usage bias amongst all plant viruses,
  # two-way comparisons between comprehensive sets of sequences from the families Flexiviridae and Potyviridae that have helped inform taxonomy and clarify genus and species discrimination criteria,
  # a survey and verification of the polyprotein cleavage sites within the family Potyviridae.