The domain within your query sequence starts at position 660 and ends at position 721; the E-value for the RPT_2 domain shown below is 8.36e-5.

PTNQVEVKEEAKSNSPVSEKPDPTPAKDKASPEPEKDFVEKAKPSPHPTKDKLKGKDETD
SP

This is a significant internal repeat in the query protein sequence, as detected by the Prospero program.