The domain within your query sequence starts at position 3 and ends at position 301; the E-value for the RPT_1 domain shown below is 3.65e-15.

KKIGSRIFHEQKILQKVFGEWREEWWVSQREWKLCVRADCHYRYYLYNLIFQNWKTFVHQ
QREMRKRFRIAEHHDTKQKMCQAWKSWLIYMVSRRTKLHMKTTALEFRRQSVLCFWWSKW
RWRLGQAHAEHALHAVAVKHRALSLQLQGWLRWQEQLLISQRDRRKEATAVQHYQHWQKQ
RSLKAWLKYLQICRVKRWQNEMAVQFHRATVLQIHFCDWQWAWEWRQSLSAHQALVVKLA
GRMVLRRAFTHWKHYMLLQAEEAAQREAAAEHRQHYLLYSCFRAFKDNVTQARLQQTRK

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