The domain within your query sequence starts at position 846 and ends at position 980; the E-value for the RPT_2 domain shown below is 2.88e-6.

PGIPPYGTLPPGRMAHASMGNRPYGPNMANMPPQVGSGMCPPPGGMNRKTQESAVAMHVA
ANSIQNRPPGYPNMNQGGMMGTGPPYGQGINSMAGMINPQGPPYPMGGTMANNSAGMAAS
PEMMGLGDVKLTPAT

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