The domain within your query sequence starts at position 109 and ends at position 278; the E-value for the RPT_1 domain shown below is 5.23e-7.

PSPPERQNPAFDPAEARPTPALPMEAQKTSPSLCPESQASGPPVLEPQGAGPLISPEPQA
PCLPAEASKAAPVPCPERVDPPCELPELEKPERGPSPESVKSALVSSKPPKHSSFADTGA
APSALSPESPVLATSPEPWGPSLSASPESRKPARTASPEPRKPSPAESPE

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