The domain within your query sequence starts at position 285 and ends at position 438; the E-value for the RPT_1 domain shown below is 2.01e-11.

DHRGQSSVSTEDDDSKEQEGFPNGHNGDNSSEENGVEEGDSTQATQDNQKLSPKDTRDAE
GGIISQSEACPSGKSQDQGIETEGPNKGNKSIITKESGKLSGSKDSNGHQGVELDKRNSP
KQGESDKPQGTAEKSAAHSNLGHSRIGSSSNSDG

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