The domain within your query sequence starts at position 1956 and ends at position 2422; the E-value for the RPT_1 domain shown below is 1.45e-251.

TRKTSAGVSSGFTSGDSSVSAGSLERVRRQRPEVLRSGSVLFGSEMEDFLATSSSSSASN
SSEESKASPGARESSLRSGVLRGSNLGVTRTRAARRKAGSVSLENGCGRKATRKRVYLSD
SDNNSVETDENLKNRKCGSSRKVLRKCAAVAASKIKLMSDAEDSSSESPCSGRKLPHRNA
SAVARKKLLHNSDDQSLKSETEELKDQNQSLLISGPHSVHNSISDSESDSDLRATRKTWN
ANGCTSHTAATCKTKSRPIESSEEDSRCHGSDHGPSSTGDPSTSGQKLRADSISEEADSE
PESSVLCKNTHLCKKAKILSDSEDCEEKCGERRGPEVEGSPVSEALREAILAPQCLSHRG
SETDVDSDGGAVREKSYSNENGSVSLENGQRRKVSRKSSSDKESNLQVTQKSPKDRSSPS
RITQRASVATDKMKLTSDAEDLSLESVCTRSKRRRKKPARFACTPAK

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