In this case you're likely better of with doing a TblastX TblastN (so, blast your proteins(s) to your genome), this will make the post-processing a bit more straightforward. From the output you can then check if the complete protein sequence has been matched or not.

An alternative would be to run something like BUSCO (which will give you the complete/fragemented/... fraction of a core set of genes, as a kind of proxy for all proteins)

EDIT: should be tblastN in stead of tblastX , my bad.