The domain within your query sequence starts at position 537 and ends at position 689; the E-value for the RPT_1 domain shown below is 6.19e-8.

TLGLESEAMRTPPDQQAAPGPQVEETPTVTPWVGNKVDLVVEQVSKALPEPCQEGISTTL
GCKPLTAEAIPDLQEGASPSLCPVLPEKKEEGQGLPSTLEYVAVALEGPWKAEGGVTIPQ
DPLMTLPPLLQSTVPTSGPESVAVVALEPQQNE

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