The domain within your query sequence starts at position 1287 and ends at position 1507; the E-value for the RPT_3 domain shown below is 1.52e-7.

HVDLEDKLGESKNSKVNFHSDEPLQAVTNATQEPVEEINLPRGRASPNGNGCEPYGSTIV
PVTNVIFCSVIQKPQRLQKKCTSLKENSSNPCPEVNVDSCDGPEVSVDSNDPCQSVAGHL
QKPDKEMNLKEDHIYLEDKSYKLVDFEPTYDSDDPVQFVTVPSVEAVSIKEVNLQKENPD
DLENENFQPCCSEVACNSAVHLQSEADPPQVACKEADLDKK

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