The domain within your query sequence starts at position 571 and ends at position 627; the E-value for the RPT_1 domain shown below is 3.94e-5.

AESSFPLLSNPGMLNPGSASSLLPLSQEDLGVPGEPLPSNGSSSPPRLSPPQYSHQI

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