The domain within your query sequence starts at position 732 and ends at position 889; the E-value for the RPT_1 domain shown below is 6.19e-8.

TPGLQDSPVAASPALQGPDPTSEPEPEVVVTSRSQQDEGIVTVPQESPTASSLTLQSSHP
TSDQEREVAATLGPQQAEEGVTIPQVAPVASPSLLQGLESTSDLESVVVGTPESQQDEGI
ATATQDTPVMAPPPLRGTDSTSDPELIAPDTSQALQRE

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