# blasting a refseq protein does not show the protein in the result set

Can anyone explain me, why I don't find a specific protein with a blast that was took before from the NCBI refseq database?

Specifically, I was trying to blast the protein with the accession number "NP_420767" and its sequence, respectively, however that protein does not show up in the results. It not only happens when the standard options are chosen, but also, when "Reference proteins (refseq_protein)" as database in the blast options is selected.

I am really puzzled by that.. Shouldn't blast show the initial refseq entry in the results list as it is part of the refseq database and has the same sequence?

CONTIG      join(WP_010919826.1:1..799)