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?