Welcome to the BLUR website.
BLUR (BLast Unexpected Ranking) is a tool designed to highlight, on the whole proteome level, protein divergences between species that result from divergence or loss of a domain and/or motif in a specific taxon. It is based on precomputed BLAST searches for a variety of model organism queries, allowing the study of all major life groups.
The BLUR method is based on the hypothesis that in a “classic” case, the succession of hits in a BLAST result will approximately respect a defined taxonomic order, whereas for proteins presenting an atypical pattern of conservation, the order will be altered and two usually close taxa will diverge in the BLAST result.
You can see an example here.
BLUR allows you to select two groups of species of interest to compare together, in order to find cases where one group or the other might diverge from what is expected.
You can see a list of all the available species here.
See our help page
to assist you in your choice of species.