The domain within your query sequence starts at position 545 and ends at position 599; the E-value for the RPT_2 domain shown below is 2.86e-5.

QRKARSRLMRQSRRSTQGVTLTDLKEAEKVAGKVPEPEQPALPSLDPSRRPRVPG

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