The domain within your query sequence starts at position 619 and ends at position 743; the E-value for the RPT_1 domain shown below is 7.07e-15.

EPKPVNVFVGYRKVSLGEHARAPAGPGTLSCLPVAAADAPKVLRRHRRSSEPSIDYLDTK
LSYLREFYQKKLRKSSCDAVLSRKDEDYLKQTQPQKKGDKVCLKQSSVTGTDVSKRNTAN
ENIKK

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