The domain within your query sequence starts at position 828 and ends at position 948; the E-value for the RPT_1 domain shown below is 8.73e-7.

GMAGSMNPMGAGGQMHGQPGIPPYGTLPPGRMAHASMGNRPYGPNMANMPPQVGSGMCPP
PGGMNRKTQESAVAMHVAANSIQNRPPGYPNMNQGGMMGTGPPYGQGINSMAGMINPQGP
P

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