The domain within your query sequence starts at position 494 and ends at position 555; the E-value for the RPT_3 domain shown below is 1.96e-13.

GFAGPLGLPGQKGDAGPIGLMGAPGPKGEKGDSGRGPFIHGEKGEKGSLGPPGPPGRDGS
KG

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