The domain within your query sequence starts at position 587 and ends at position 740; the E-value for the RPT_1 domain shown below is 2.58e-22.

GARGKPGLPGMPGSDGLPGHPGKEGPPGTKGNQGPSGPQGPLGYPGPRGVKGVDGIRGLK
GHKGEKGEDGFPGFKGDIGVKGDRGEVGVPGSRGEDGPEGPKGRTGPTGDPGPTGLMGEK
GKLGVPGLPGYPGRQGPKGSLGFPGFPGASGEKG

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