The domain within your query sequence starts at position 333 and ends at position 584; the E-value for the RPT_1 domain shown below is 8.83e-12.

HMLQSGSNQPDMNDVDVWQSGTSQPGMHQMDPWQWGHNYSGNTQSGQWTPGPNALVVGQF
DSWQPVQPGMKYSESGPWSPRHLDMRQPSPSQLATRQFDKWQQNPSMPGVRQLYTWQPTS
SFSDTRQLEKFHPCPINLNMEQFWEAVSRQPGTTQLGTNQLDTNQPDGTQSSQGGKTQSD
KLEPSPRKPEMKGSQPDTSQSDSDHLDISQPGPSQLEPGESSMSDLNESQQRITQSPMGK
KDSCSFFIRPAE

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