The domain within your query sequence starts at position 840 and ends at position 974; the E-value for the RPT_2 domain shown below is 3.79e-6.

GEVGFRVPSVEIVTPQLPTVEVEKEQLEMVEMKVKPSSKFSLPKFGLSGPKAVKGEVEGP
GRATKLKVSKFTISLPKARAGTEAEAKGAGEAGLLPALDLSIPQLSLDAQLPSGKVEVAD
SKPKSSRFALPKFGV

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