The domain within your query sequence starts at position 1647 and ends at position 1753; the E-value for the RPT_1 domain shown below is 4.88e-5.

ELLLDRRLHIPELEEAERFEAQQGRTLRLLRAGYQCVAAHSELLCYFIIILNHMVTASAA
SLVLPVLVFLWAMLTIPRPSKRFWMTAIVFTEVMVVTKYLFQFGFFP

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