The domain within your query sequence starts at position 626 and ends at position 779; the E-value for the RPT_1 domain shown below is 9e-23.

GARGKPGLPGMPGSDGLPGHPGKEGPPGTKGNQGPSGPQGPLGYPGPRGVKGVDGIRGLK
GHKGEKGEDGFPGFKGDIGVKGDRGEVGVPGSRGEDGPEGPKGRTGPTGDPGPTGLMGEK
GKLGVPGLPGYPGRQGPKGSLGFPGFPGASGEKG

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