The domain within your query sequence starts at position 1307 and ends at position 1536; the E-value for the RPT_1 domain shown below is 3.17e-15.

DEPLQAVTNATQEPVEEINLPRGRASPNGNGCEPYGSTIVPVTNVIFCSVIQKPQRLQKK
CTSLKENSSNPCPEVNVDSCDGPEVSVDSNDPCQSVAGHLQKPDKEMNLKEDHIYLEDKS
YKLVDFEPTYDSDDPVQFVTVPSVEAVSIKEVNLQKENPDDLENENFQPCCSEVACNSAV
HLQSEADPPQVACKEADLDKKALDIEDKGSVTCVPEVVYDSDVSFQIVVN

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