CRISPI : a CRISPR Interactive database (Please cite Bioinformatics. 2009 Dec 15;25(24):3317-8)

User Manuel : HTML PDF
Video demonstration

User Parameter

Email (optional)

Consult CRISPR Database

Database Summary

Last Update = 2015-10-06 10:11:59
Genomes analysed Species analysed CRISPRs found Genomes with CRISPR Species with CRISPR Units found Spacers found Putative CAS genes
Archaea 168 137 531 133 (79.17%) 113 (82.48%) 16122 15591 2203

Database Highlights

Genomes with maximal number of CRISPR number of units in a CRISPR number of CAS genes spacer size repeat size
Archaea Methanocaldococcus sp. FS406-22 chromosome (18) Sulfolobus tokodaii str. 7 chromosome (458) Pyrococcus yayanosii CH1 chromosome (47) Methanococcus vannielii SB chromosome (488) | Methanobacterium sp. MB1 complete sequence (43)

Genome selection

  Accession number
  Select genome Filter
  Select species (all strains) Filter
  Taxonomy browser


Spacer/repeat selection

  Sequences to retrieve
  Add repeat palindromic structure
Taxonomy browser
Minimum size
Maximum size

Blast a personal sequence against CRISPR database

       Sequence type : DNA Protein
       Paste your sequence : (fasta format)
       Or give your sequence file name :
       against databank :
       Modify Blast parameters


Find CRISPR in personnal sequence

       Paste your sequence : (fasta format)
       Or give your sequence file name :