The domain within your query sequence starts at position 1138 and ends at position 1198; the E-value for the RPT_4 domain shown below is 7.18e-6.

RGVAASTNDPEAAHAMLDSARDVMEGSAMLIQEAKQALIAPGDTESQQRLAQVAKAVSHS
L

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