The domain within your query sequence starts at position 605 and ends at position 702; the E-value for the RPT_1 domain shown below is 2.91e-9.

PQIVGLYNRLLQRCELNRHTTEAAAGALQNITAGDRRWAGVLSRLALEQERILNPLLDRV
RTADHNQLRSLTGLIRNLSRNARNKDEMSTKVVSHLIE

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